Section V Oleaginous Plants, and Those Yielding Fixed or Essential Oils
Few cultivators are probably aware of the great importance of oil to this country, and the number of purposes for which it is employed in the arts and manufactures. It is extensively used for candle and soap making, for burning in lamps, for diminishing friction in machinery of all kinds, and especially for locomotives—in wool-dressing, in the manufacture of paints and varnishes, as an article of food, for medicinal purposes, &c.
So important are vegetable oils deemed, that the Society of Arts, in its prize list for 1851, offered gold medals for the importation or introduction into this country of any new plants or trees from China, India, or elsewhere, producing oils or fatty substances, such as can be used as food, or are applicable to manufacturing purposes; and also to the person who shall manufacture and import the finest specimen of oil, not less than ten gallons, the produce of olives grown in any British colony in Africa or Australasia.
The time of burning of equal quantities of the following oils has been found to be—
| Hours. | ||
| Oil of | poppy | 14 |
| ″ | sunflower | 13 |
| ″ | rape | 11 |
| ″ | mustard | 11½ |
| ″ | flax seed | 10 |
| ″ | gold of pleasure (Camelina sativa) | 9½ |
| ″ | olives | 9 |
| ″ | hemp seed | 8 |
| ″ | tallow | 10½ |
Foreign Vegetable Oils Imported
| 1821. | 1845. | 1850. | |
| tuns. | tuns. | tuns. | |
| Coco-nut oil | — | 2,148 | 98,040 |
| Olive oil | 1,900 | 12,315 | 20,783 |
| Palm oil | 3,200 | 25,285 | 448,589 cwts. |
| Rape seed oil | 800 | 3,973 | — |
| Linseed oil | 10,500 | 38,634 | — |
| 16,400 | 82,355 | ||
| Fish oils | 32,356 | 22,626 | 21,328 |
The total quantity of all kinds of wool annually consumed in England and Wales, in 1843, was estimated at 801,566 packs. Now, five gallons of olive, rapeseed or other oils, being used in the preparation of every pack of wool, for cloth (independent of the quantity used in soap, applicable to the woollen manufactures), it follows that five gallons on 801,566 packs are equal to 4,007,830 gallons, or 15,904 tuns; and adding for olive or sperm oil used in machinery 1-11th of the whole, 1,446 tuns, the total quantity consumed is 17,350 tuns.—(“Enderby on the South Whale Fishery.”)
Fixed oils are found in the cells and intercellular spaces of the fruit, leaves, and other parts of plants.
Some of these are drying oils, as linseed oil, from Linum usitatissimum; some are fat oils, as that from olives (fruit of Olea sativa or Europæa); whilst others are solid, as palm oil.
The solid oils or fats procured from plants are, butter of cacao, from Theobroma cacao; of cinnamon from Cinnamomum verum; of nutmeg, from Myristica moschata; of coco-nut, from Cocos nucifera; of laurel, from Laurus nobilis; of palm oil, from Elais guianiensis; Shea butter, from Bassia Parkii; Galam butter, or Ghee, from Bassia butyracea; and vegetable tallow, from Stillingia sebifera in China, from Vateria indica in Canara and China, and from Pentadesma butyracea in Sierra Leone, and from the almond. These oils contain a large amount of stearine, and are used as substitutes for fat. Some of them are imported in large quantities, and enter into the composition of soap, candles, &c.
Castor oil, from the seeds of Ricinus communis, differs from other fixed oils in its composition.
Decandolle states the following as the quantity of oil obtained from various seeds:—
| Per cent. in weight. | |
| Hazel-nut | 60 |
| Garden cress | 57 |
| Olive | 50 |
| Walnut | 50 |
| Poppy (Papaver somniferum) | 48 |
| Almond | 46 |
| Caper-spurge (Euphorbia Lathyris) | 41 |
| Colza (Brassica oleracea) | 39 |
| White mustard (Sinapis alba) | 36 |
| Tobacco | 34 |
| Plum | 33 |
| Woad | 30 |
| Hemp | 25 |
| Flax | 22 |
| Sunflower | 15 |
| Buckwheat | 14 |
| Grapes | 12 |
The following table, quoted from Boussingault, shows the results of some experiments made by M. Grauzac, of Dagny:—
| Seed produced per acre. | Oil obtained per acre, in lbs. | Oil per cent. | Cake per cent. | ||||
| cwts. | qrs. | lbs. | lbs. | ozs. | |||
| Colewort | 19 | 0 | 15 | 875 | 4 | 40 | 54 |
| Rocket | 15 | 1 | 3 | 320 | 8 | 18 | 73 |
| Winter rape | 16 | 2 | 18 | 641 | 6 | 33 | 62 |
| Swedish turnips | 15 | 1 | 25 | 595 | 8 | 33 | 62 |
| Curled colewort | 16 | 2 | 18 | 641 | 6 | 33 | 62 |
| Turnip cabbage | 13 | 3 | 19 | 565 | 4 | 33 | 61 |
| Gold of pleasure | 17 | 1 | 16 | 545 | 8 | 27 | 72 |
| Sunflower | 15 | 3 | 14 | 275 | 0 | 15 | 80 |
| Flax | 15 | 1 | 25 | 385 | 0 | 22 | 69 |
| White poppy | 10 | 1 | 18 | 560 | 8 | 46 | 52 |
| Hemp | 7 | 3 | 21 | 229 | 0 | 25 | 70 |
| Summer rape | 11 | 3 | 17 | 412 | 5 | 30 | 65 |
The subjoined list will serve to exhibit the richness of the produce of different Indian seeds, from which varieties of oil are extracted; it gives the proportion of oil per cent. in weight:—
| Sesame oil (Sesamum indicum) | 46.7 |
| Black til, coloured variety of ditto (Verbesena sativa) | 46.4 |
| Gingelie oil (S. orientale) | 46.7 |
| Ground nuts, produced byArachis hypogœa | 45.5 |
| Wounded seeds obtained from the Poonnay-tree (Calophyttum Inophyllum), a bitter lamp oil | 63.7 |
| Karunj seeds, from thePongamia glabra | 26.7 |
| Ram til, the seeds of the nuts Ellu, orGuizotia oleifera | 35 |
| Poppy seeds (Papaver somniferum) | 43 to 58 |
| Silaam, an oil seed from Nepaul | 41 |
| Rape seed (Brassica napus) | 33 |
The foregoing are not all the seeds from which oil is extracted by the natives of the East. In addition to this there are cottonseed oil, used for their lamps. Castor oil and Argemone seed, similarly used. Oil obtained from the fruit of Melia Azadriachta, for medicine and lamps. Apricot oil in the Himalayas, sunflower oil, oil of cucumber-seed for cooking and lamps, oil of colocynth seed, a lamp oil.
The seeds of bastard saffron (Carthamus tinctorius) yield oil.
Mustard oil, the produce of various species of Sinapis, &c. Shanghae oil, from Brassica Chinensis. Illiepie oil, from Bassia longifolia, which is used for frying cakes, &c., in Madras; and Muohwa oil, from another species of the same genus in Bengal, B. latifolia. Oil is expressed from the seeds of Cæsalpina oleosperma, a native of the East. The neem tree seeds afford a very clear or bitter oil, used for burning.
Wood oil is a remarkable substance, obtained from several species of Dipterocarpus, by simply tapping the tree.
The horse-eyes and cacoons of Jamaica (Fevillea scandens) yield a considerable quantity of oil or fat, as white and hard as tallow. It has been employed for similar purposes on the Mosquito shores.
The seeds of the Argemone mexicana, and of the Sanguinaria canadensis, also contain a bland, nutritious, colorless, fixed oil. The mass from which the seed is expressed is found to be extremely nutritious to cattle.
The Camelina sativa is cultivated in Europe, for the extraction of an oil used only by the soap makers, and for lamps.
A solid oil, of a pale greenish color, a good deal resembling the oils of the Bassia in character, though rather harder, and approaching more in properties to myrtle wax, was shown at the Great Exhibition, from Singapore. It is supposed to be the produce of the tallow tree of Java, called locally “kawan,” probably a species of Bassia. It is very easily bleached; indeed, by exposure to air and light, it becomes perfectly white; if not too costly, it promises to become a valuable oil.
According to Mr. Low, there are several varieties of solid oil commonly used in the Islands of the Archipelago, and obtained from the seeds of different species of Dipterocarpus.
Piney tallow is obtained from the fruit of the Vateria Indica, a large and quick-growing tree, abundant in Malabar and Canara. It is a white solid oil, fusible at a temperature of 97 degrees, and makes excellent candles, especially when saponified and distilled in the manner now adopted with palm oil, &c. It has one great advantage over coco-nut oil, that the candles made of it do not give out any suffocating acrid vapors when extinguished, as those made with the latter oil do.
An oil is produced from the inner shell of the cashew-nut (Anacardium occidentale var. indicum), in the East.
In Japan a kind of butter, called mijo, is obtained from a species of the Dolichos bean (Dolichos soya).
The kernel of the seeds of the tallow tree of China, Stillingia sebifera, an evergreen shrub, contains an oil, which, when expressed, consolidates through the cold to the consistence of tallow, and by boiling becomes as hard as bees’ wax. The plant also yields a bland oil. A similar fatty product is obtained from a shrub in British Guiana, the Myristica (Virola) sebifera.
Oil is obtained in South America from the sand box tree (Hura crepitans), and from the Carapa guianensis.
A fatty oil is obtained in Demerara from the seeds of the butter tree, Pekea (?) Bassia butyrosa, and also from the Saouari (P. tuberculosa).
The fleshy seeds contained in the woody capsules of the Monkey pot (Lecythis Tabucajo), which derive their generic name from their similarity to an oil jar, are common in the West India Islands and South America, and yield a considerable quantity of oil.
The seeds of the plants of the cucumber family frequently supply a bland oil, which is used in the East as a lamp oil and for cooking. Among the vegetable oils imported into Ningpo, and other Chinese ports, from Shantong, Leatong, and Teisin, are oil of teuss, obtained from green and dried peas; black oil of the fruit of the tree kin (?) and oil from the pea of suchau.
The seeds of Spergula saliva, a large, smooth-seeded variety of the common cow spurrey, which is cultivated in Flanders as a pasture grass and green crop, afford, on expression, a good lamp oil.
A pale brownish yellow oil is obtained from the seeds of Carthamus tinctorius, in Bombay; the seeds contain about 28 per cent. of oil.
Excellent oil is expressed in various parts of India from the seeds of different species of Sinapis, especially from the black mustard seed. S. glauca, S. dichotorna, and S. juncea are extensively cultivated in the East for their oil. The Erysimum perfoliatum is cultivated in Japan for its oil-seeds.
A beautiful pale yellow oil is procured from the seeds of the angular-leaved physic nut, Jatropha curcas, a shrub which is often employed in the tropics as a fence for enclosures. It is used by the natives in medicine and as a lamp oil. About 700 tons of this oil was imported into Liverpool in 1850 from Lisbon, for the purpose of dressing cloth, burning, &c.
A rich yellow oil, perfectly clear and transparent, is obtained from the seeds of Bergera koenigii.
RAPE OIL.—The imports of rape oil, from Brassica napus, into Liverpool, are about 15 to 20 tuns annually.
Rape oil has been found to be better suited than any other oil for the lubrication of machinery, when properly purified from the mucilage, &c., which it contains in the raw state. Rape oil is now used extensively for locomotives, for marine engines, and also for burning in lamps. It is stated that a locomotive consumes between 90 and 100 gallons of oil yearly; and the annual consumption of oil by the London and North-Western Railway, for this purpose alone, is more than 40,000 gallons. The oil obtained from good English rape seed is purer and of superior quality to that from foreign or colonial seed; and as an acre of land yields nearly five quarters of seed, which is worth at present 50s. per quarter, it is a profitable crop.
Rape seed is now largely imported for expressing oil. The imports, which in 1847 were but 87,662 quarters, weighing 17,532 tons, had reached, in 1851, 107,029 quarters, weighing 21,606 tons. The price of new seed is £25 to £27 the last of ten quarters. The oil is £34 per tun.
The refuse cake, after the seed is crushed for oil, is in demand as food for cattle, being worth £4 the ton.
We imported in 1851, from Trance, 289 tuns of rapeseed oil, worth about £17,000, on which there was no duty levied.
There are exported annually from Hesse Darmstadt, 34,660 cwts. of poppy and rape oils.
The oil of the colza is much used in Europe, and highly prized. In France it has been adopted for all the purposes of lighthouses. In this country it has lately come into extensive domestic use, for burning in the French moderateur lamps, being retailed at from 3s. 4d. to 4s. the gallon.
DOMBA OIL.—The Poonay or Palang tree (Calophyllum Inophyllum), the Alexandrian laurel, is a beautiful evergreen, native of the East Indies, which flourishes luxuriantly on poor sandy soils, in fact where scarcely anything else will grow. The seeds or berries contain nearly 60 per cent. of a fragrant, fixed oil, which is used for burning as well as for medicinal purposes, being considered a cure for the itch. As commonly prepared it has a dark green color. It is perfectly fluid at common temperatures, but begins to gelatinise when cooled below 50 degrees.
THE EARTH-NUT (Arachis hypogæa, or hypocarpogea).—This very singular plant has frequently been confounded with others, partly through the carelessness of travellers, and by the improper use of names, which tended to mislead and confuse. Its common appellative, the earth-nut, has led to the conclusion that it was a species of nut, such as is known in England under the name of “pig nut,” “hawk nut,” and “ground nut.” This, as well as the “earth chesnut,” belongs to a totally different genera. On the Continent and in the East Indies a similar confusion had long existed by the appellation of “ground pistachio,” which caused the fruit to be confounded with the nut of the tree Pistacia vera. Some resemblance, on the other hand, existing between these—as well as from their being eaten by different nations, and used as an article of food, and also for producing oil—rendered the true description still more difficult. Botanists are, however, no longer at a loss, having well established the nature and character of all these plants. The Arachis “nut” partakes of the nature of the pea or bean of our own country, and is a low annual plant of the order Diadelphia decandria of Linn.; originally from Africa, but now extensively cultivated in every quarter of the globe. It has been naturalised in Europe, and with the climate of the South of France it may be turned to good account.
It has been said to be indigenous in Florida, Peru, Brazil, and Surinam; but the plant may be grown on a light sandy soil, under a moderate heat, equal to that of Italy or the South of France. The class to which it belongs approaches to the pea tribe; but its remarkable difference to this, as to the pulse we know as a bean, is the circumstance of its introducing its fruit or pod—if we may so call it—into the earth, for the purpose of ripening its seed. The Arachis, or earth nut, has obtained its name from this operation. The flowers, leaves, and stems are produced in the ordinary manner we see in the pea tribe. When the yellow flower has withered and the seed fertilised, there is nothing left but the bare stem which had supported it. This stem, in which is the germ of the future fruit and pod, now grows rapidly in a curved manner, with a tendency to arrive shortly on the surface of the ground, into which it penetrates this now naked stem, and sinks into the earth several inches. It is in this obscure position that the fruit takes its ripened form, and is either gathered from its hiding place or left to the future season, when its time of rising into new existence calls it from what was thought its unnatural position.
When mature, it is of a pale yellow color, wrinkled, and forms an oblong pod, sometimes contracted in the middle; it contains generally two seeds. The nuts or peas are a valuable article of food in the tropical parts of Africa, America, and Asia. They are sweetish and almond-like, and yield an oil, when pressed, not inferior in use and quality to that obtained from the olive. The leaf resembles that of clover, and, like it, affords excellent food for cattle. The cake, after the oil is expressed, forms an excellent manure.
The Arachis is usually sown in dry, warm weather, from May to June, and are placed at the distance of eighteen inches from each other. Insects are fond of them; and if the season is cold and unfavorable to them, or the growth retarded, they become musty and bad, or are eaten by insects.
The mode of obtaining the oil is nearly the same as for other pulse or seeds; and under favorable circumstances the Arachis will produce half its weight of oil. When heated and pressed the quantity is very considerably increased. This oil is good for every purpose for which olive or almond oil is used. For domestic purposes it is esteemed, and it does not become rancid so quickly as other oils. Experiments have been made on its inflammable properties, and it is proved that the brilliancy of light was superior to that of olive oil, and its durability was likewise proved to be seven minutes per hour beyond the combustion of the best olive oil, with the additional advantage of scarcely any smoke. In Cochin-China and India it is used for lamps. It is known as Bhoe Moong or Moong Phullee in Bengal, and as Japan or Chinese pulse in Java.
From China this plant was probably introduced into the continent of India, Ceylon, and the Malayan Archipelago, where it is generally cultivated.
In South Carolina the seed is roasted and used as chocolate. The leaves are used medicinally.
It is grown in Jamaica, and there called Pindar nut.
That the culture of the Arachis in warm climates, or even in a temperate one, under favorable circumstances, should be encouraged, there can be but one opinion. And when it is considered that its qualities are able to supersede that of the olive and the almond, which are but precarious in their crops—to which may be added, that as a plant it is greedily devoured in the green state by cattle—how much may it not serve to assist the new settler in regions of the world which have a climate suited to it.
It is known by various local names—such as mani manoti by the Spaniards, and has obtained also that of cacahuete in some countries. It has the additional term hypogea attached to it, which literally signifies subterranean. This is apt to mislead; for the plant grows above ground as other pulse, whereas only its seed and pericarp are inserted, after blooming, into the earth. Hence the better term hypocarpogea.
It appears to form an important article of cultivation along the whole of the west coast of Africa, and probably on the east coast, on several parts of which it was found by Loureiro (“Flor. Cochin,” p. 430). It was doubtless carried from Africa to various parts of equinoctial America, for it is noticed in some of the early accounts of Peru and Brazil. 800 quarters of this nut were imported into Liverpool from the West Coast of Africa, in 1849, for expressing oil, and about half that quantity in 1850.
Eighty to 90 tuns of the expressed oil are now annually imported. The seeds contain about 44 per cent. of a clear pale yellow oil, which is largely used in India as food, and for lamps, particularly at Malwa and Bombay, &c. Two varieties are grown in Malacca, the white seed and the brown seed, and also in Java, in the vicinity of sugar plantations; the oil cake being used as manure. It is there known as katjang oil.
This plant, which seems to be a native of many parts of Asia, has within the last ten years been much cultivated about Calcutta. The seeds contain abundance of fixed oil, have a faint odor, and very mild agreeable taste; 1,950 parts of seed, separated from their coverings and blanched, give 1,405 of kernels, from which, by cold pressure, 703 parts of oil are procured. The seeds are consumed as a cheap popular luxury, being half roasted, and then eaten with salt. The oil is calculated to serve as an efficient and very cheap substitute for olive oil, for pharmaceutical purposes. It burns with little smoke, with a clear flame, and affords a very full bright light, answering perfectly in Argand lamps.
The oil cake affords, also, an excellent food for cattle.
The ground nut has of late become of considerable importance as an article of exportation, by English houses; yet more so by French houses at Ghent, Rouen, and Bordeaux; some of whom have contracted with the merchants of the African colonies for large quantities, sending shipping for the cargoes. One house alone contracted for 60,000 bushels in the years 1844 and 1845. This nut oil is so very useful to machinery that the naval steam cruisers on the coast have adopted it. A ground-nut oil factory exists in the colony of Sierra Leone; but from the want of steam power and proper machinery, and from bad management, together with the inferior attainments of the African artisan, when compared with the European mechanic, and their facilities in quantity or quality, there is abundant scope for improvement. The price in the colony is 4s. 6d. per gallon. It is capable of being refined so as to answer the purpose of a salad oil; the nut is prolific, and eaten by the natives and Europeans, boiled, roasted, or in its raw state; and frequently introduced at the table as we do the Spanish Barcelona nut at dessert. It grows in the rainy season, and is collected in the dry, and sold in the colony for one shilling to eighteen-pence per bushel, in goods and cash. Form of the nut, long, light shell, contains two kernels covered with a brown rind, when shelled white in appearance.
It is a low creeping plant, with yellow flowers; after they drop off, and the pods begin to form, they bury themselves in the earth, where they come to maturity. The pod is woody and dry, containing from one to three peas, or nuts, as they are called, hence the common names, ground-nut or pea-nut. They require to be parched in an oven before they are eaten, and form a chief article of food in many parts of Africa.
From a narrow strip of land, extending about 40 miles northerly from Wilmington (North Carolina), comes nearly the entire quantity of earth nuts (known as pea-nuts) grown in the United States for market. From that tract and immediate vicinity, 80,000 bushels have been carried to Wilmington market in one year.
The plant has somewhat the appearance of the dwarf garden-pea, though more bushy. It is cultivated in hills. The pea grows on tendrils, which put out from the plant and take root in the earth, where the nut is produced and ripened. The fruit is picked from the root by hand, and the vines are a favorite food for horses, mules, and cattle. From 30 to 80 bushels are produced on an acre. There are some planters who raise from 1,000 to 1,500 bushels a year.—(“Hunt’s Merchant’s Magazine,” vol. xv., p. 426.)
The ground-nut is exceedingly prolific, and requires but little care and attention to its culture, while the oil extracted from it is quite equal to that yielded by the olive. Almost any kind of soil being adapted for it, nothing can be more simple than its management. All that is required is the soil to be turned over and the seed sown in drills like potatoes; after it begins to shoot it may be earthed with a hoe or plough. In many parts of Western Australia they are now grown in gardens for feeding pigs, the rich oil they are capable of yielding being entirely overlooked. In regard to their marketable value at home, I will give a copy of a letter of a friend of mine, received from some London brokers, largely engaged in the African trade:—
“Wilson and Rose present compliments to Mr. N., and beg to inform him the price of African ground nuts is as under:—Say for River Gambia, £11 per ton here. Say for Sierra Leone, £10 per ton here. For ground nuts free on board at the former port, £8 per ton is demanded; these are the finest description of nut, the freight would be about £4 per ton; the weight per bushel imperial measure, and in the shell, is about 25 lbs.”
The following, also, is an extract from a letter written in 1842, by Mr. Forster (the present M.P. for Berwick), an eminent African merchant. Speaking of the staple of Africa, he says:—
“I have lately been attempting to obtain other oils from the coast, and it was only yesterday I received from the hands of the oil presser the result of my most recent experiment on the ground nut, which I am happy to say is encouraging. I send you a sample of the oil extracted from them. They are from the Gambia. It is a pure golden colored oil, with a pleasant flavor, free from the frequent rancidity of olive oil.”
Since then the cultivation has gone on, and the exportation largely increased. The French also have entered into the trade, and several vessels are exclusively employed in exporting this product from the river Gambia, conveying it to oil factors on the continent, who extract its oil. Seeing, then, the many advantages the cultivation of such a product bestows, and its adaptation to the soil and climate of Australia, I cannot refrain from expressing a hope that some of the influential landowners in the cultivated districts will give the matter their consideration.
I am informed by an American merchant that he cleared 12,000 dollars in one year, on the single article of ground or pea nuts obtained from Africa. Strange as it may appear, nearly all these nuts are transhipped to France, where they command a ready sale; are there converted into oil, and thence find their way over the world in the shape of olive oil; the skill of the French chemists enabling them to imitate the real Lucca and Florence oil, so as to deceive the nicest judges. Indeed, the oil from the pea nuts possesses a sweetness and delicacy that cannot be surpassed.
Advices from the West Coast of Africa to the 16th August, 1853, report that the ground nut season had closed; the quantity shipped during the season having exceeded 900,000 bushels. The yield has increased 20 per cent, each year for the last three years, and it is expected the increase will be still greater in the forthcoming season.
TEUSS OIL.—The Chinese use what is called teuss or tea oil, for food and other purposes. I have alluded to it under the head of pulse, at page 312. It is obtained, however, from a species of the ground nut, and is sold in Hong Kong, at 2s. 6d. the gallon, being imported from the main land. By a local ordinance it is imperative on every householder at Victoria, Hong-Kong, to have a lamp burning over his door at night. When burning, this oil affords a clear, bright light, and is not so offensive to the smell as train and other common lamp oils.
TOBACCO SEED OIL.—A discovery, which may prove of some commercial importance, appears to have been made by a British resident in Russia, namely, that the seed of the tobacco plant contains about fifteen per cent. of an oil possessing peculiar drying properties, calculated to render it a superior medium, especially for paints and varnishes. The process employed for the extraction of the oil is to reduce the seed to powder, and knead it into a stiff paste with quantum sufficit of hot water, and then submit it to the action of strong fires. The oil thus obtained is exposed to a moderate heat, which, by coagulating the vegetable albumen of the seed, causes all impurities contained in the oil to form a cake at the bottom of the vessel employed, leaving the oil perfectly limpid and clear.
POPPY OIL.—About 80 cwt. of poppy seed is imported annually into Hull, and small quantities come into other ports to be crushed into oil. The seeds of the poppy yield, by expression, 56 per cent. of a bland and very valuable oil, of a pale golden color, fluid to within ten degrees of the freezing point of water. It dries easily, is inodorous, and of an agreeable flavor like olive oil.
Dr. J.V.C. Smith, writing from Switzerland, to the editor of the “Boston Medical Journal,” says:—
“Immense crops are raised here of articles wholly unknown to the American farmers, and perhaps the kinds best fitted to particular localities where grain and potatoes yield poorly under the best efforts. One of these is poppies. Thousands of acres are at this moment ready for market—which the traveller takes for granted, as he hurries by, are to be manufactured into opium. They are not, however, intended for medical use at all, but for a widely different purpose. From the poppy seed a beautiful transparent oil is made, which is extensively used in house painting. It is almost as colorless as water, and possesses so many advantages over the flax seed oil that it may ultimately supersede that article. Where flax cannot be grown poppies often can be, in poor sandy soil. Linseed oil is becoming dearer, and the demand for paint is increasing. With white lead, poppy oil leaves a beautiful surface, which does not afterwards change, by the action of light, into a dirty yellow. Another season some one should make a beginning at home in this important branch of industry. The oil may be used for other purposes, and even put in the cruet for salads.”
TALLICOONAH or KUNDAH OIL, is obtained from the seeds of the Carapa Touloucouna (of the Flore de Senegambie). The tree grows to the height of 40 feet; the fruit is a large, somewhat globular five-celled capsule. The seeds (of which there are from 18 to 30 in each capsule), vary in size from that of a chesnut to a hen’s egg. They are three-cornered, of a brownish or blackish red color. It is found abundantly in the Timneh country, and over the colony of Sierra Leone. It is manufactured in the following manner:—The nuts having been well dried in the sun, are hung up in wicker racks or hurdles, and exposed to the smoke of the huts, after which they are roasted and subjected to trituration in large wooden mortars, until reduced to a pulp. The mass is then boiled, when the supernatant oil is removed by skimming. The natives principally prepare the oil to afford light; the leaves are used by the Kroomen as a thatch. It is held in high estimation as an anthelmintic. The oil is sold in Sierra Leone at 2s. a gallon, and could be procured in abundance from the coast as an article of commerce.
CARAP or CRAB OIL (Carapa guianensis).—This is a sort of vegetable butter, being sometimes solid and sometimes half fluid, which is obtained from the seed of a large tree abundant in the forests of Guiana, and also found in Trinidad. It is said to turn rancid very soon when exposed to the air, but this is probably caused by the presence of impurities, arising from the crude and imperfect way in which it is prepared by the natives, who boil the kernels, leave them in a heap for a few days, then skim them, and lastly reduce them into a paste in a wooden mortar, which is then spread on an inclined board, and exposed to the heat of the sun, so that the oil may melt and gradually trickle down into a vessel placed below to receive it. A prize medal was awarded for this oil at the Great Exhibition in 1851.
Carap oil in Trinidad is highly esteemed as an unguent for the hair, and also for applying to the wounds of animals, for destroying ticks and other insects which infest cattle—also for the cure of rheumatism. An oil called Carap oil is also obtained in the East, from the almonds of Xylocarpus granatum, or Carapa Molluccensis, of Lanark, which is used by the natives to dress the hair and anoint the skin, so as to keep off insects.
Cacao fat, the butter-like substance obtained from the seeds of Theobroma cacao, is esteemed as an emollient.
The nuts of the Great Macaw tree (Acrocomia fusiformis), a majestic species of palm, furnishes much oil. This tree is the Cocos fusiformis, of Jacquin, and other intertropical botanists. It is a native of Trinidad and Jamaica, and is found also very commonly in South America.
The method of extracting the oil is as follows:—The nut or kernel is slightly roasted and cleaned, then ground to a paste, first in a mill, and then on a livigating stone. This paste, gently heated and mixed with 3-10ths of its weight of boiling water, is put into a bag, and the oil expressed between two heated plates of iron; it yields about 7-10ths or 8-10ths of oil. If discolored it can be purified, when melted, by filtration. It is then of the consistence of butter, of a golden yellow hue, the odor that of violets, and the taste sweetish. If well preserved it will keep several years without spoiling, which is known to have taken place by the loss of its golden hue and delightful aroma.
It is frequently sold in the shops as palm oil, and of late has entered largely into the composition of toilet soaps. As an emollient it is said to be useful in some painful affections of the joints; the negroes deem it a sovereign remedy in “bone ache.” The nut itself is sometimes fancifully carved by the negroes, and is highly ornamental, being of a shining jet black, and susceptible of a very high polish. This tree may be increased from suckers.
A. sclerocarpa is the Macahuba palm of Brazil.
THE AGAITI, as it is called by the Portuguese, or napoota by the natives and Arabs (Didynamia Gymosperma?), much cultivated in all Eastern Africa for its oil, which is considered equal to that of olives, and fetches as high a price in the Indian market. The plant, which is as tall and rank as hemp, and equally productive, having numerous pods throughout the stems, is found everywhere in a wild as well as cultivated state.
The “Cape Shipping Gazette,” of August, 1850, says:—
“The attention of the George Agricultural and Horticultural Society having been drawn to the fact that an excellent oil, equal to the olive oil of Italy, can be extracted from the kernel of the fruit known by the name of “T Kou Pijte” and “Pruim Besje,” they have offered a reward of £10 for the best sample, not less than a half aum of this oil—and £15 if it shall be adjudged equal to the best oil of Italy. This fact is deserving of notice, as an instance of the advantages which are likely to result from the attention now being devoted to the natural productions of the colony.”
Madia sativa is a handsome annual plant, native of Chili, which has been naturalised in Europe. It grows about two feet high, and produces flowers in July and August, of a pale yellow color.
The whole plant is viscid and exhales a powerful odor, which is somewhat like heated honey. It requires rather a rich soil, of a ferruginous character. The root is fusiform, the stem cylindrical, and furnished with sessile, three to five longitudinally-nerved leaves, which are apposite on the lower portion of the stem, and alternate on the upper. M. Victor Pasquier, who has written on the culture of the plant, analysed the seed, and found 100 parts to consist of 26.5 of testa, and 73.5 of kernel; 100 parts of the latter yielded 31.3 of vegetable albumen, gum, and lignine, 56.0 of fixed oil, and 12.5 of water. In dry seasons the oil is both more abundant and better than in damp seasons. The produce of oil, compared with that of the poppy, is equal; with colza, as 32 to 28; with linseed, 32 to 21; with the olive, 32 to 16.
The leaves and stems of this plant are rejected by cattle; but the oil-cake, which always contains a considerable portion of the oil, forms a nutritive food, of which they are very fond. The oil expressed without heat is transparent, of a golden yellow color, inodorous, rather fatter than the oil of rape or olives, and of a soft, agreeable, nutty taste. It is fit to be employed in the preparation of food, in salads, and for all the purposes of the best and mildest fixed oils. It burns with a brilliant, reddish-white flame, and leaves no residue. It is little liable to become rancid, and is completely decolorised by animal charcoal.
The oil of the seeds of this plant, now extensively cultivated in France, will yield, according to the observations of Braconnet, a solid soap, similar to that made from olive oil. Boussingault obtained from the oil a solid, as well as a fluid acid. The solid one is probably palmic acid, it fuses at exactly 140 degrees of Fahrenheit. The fluid acid in its properties resembles the oleic acid discovered by Chevreul, and seems to dry easily.
The following is the composition of each, as determined by his analysis:—
| Solid acid. | Fluid acid. | |
| Carbon | 74.2 | 76.0 |
| Hydrogen | 12.0 | 11.0 |
| Oxygen | 13.8 | 13.0 |
| 100. | 100. |
COCUM OIL, or butter, is obtained from the seeds of a kind of mangosteen (Garcinia purpurea), and used in various parts of India to adulterate ghee or butter. It is said to be exported to England for the purpose of mixing with bears’ grease in the manufacture of pomatum. It is a white, or pale greenish yellow, solid oil, brittle, or rather friable, having a faint but not unpleasant smell, melting at about 95 degrees, and when cooled after fusion remaining liquid to 75 degrees.
An excellent solid oil, of a bright green color, is obtained from Bombay, having a consistence intermediate between that of tallow and wax, fusible at about 95 degrees, and easily bleached; it has a peculiar and somewhat aromatic odor. There is some uncertainty as to the plant from which it is obtained. It was referred to the Salvadora persica, and to the Vernonia Anthelminticea, a plant common in Guzerat and the Concan Ghats.
A pale yellow clear oil is obtained from the seed of Dolichos biflorus(?). Oil is also expressed in India from the seed of the Argemone mexicana, which is used for lamps and in medicine; and from the seeds of the cashew nut (Anacardium occidentale), from Sapindus marginatus, and the country walnut (Aleurites triloba.) The fruit of the Chirongia sapinda, (or Buchanania latifolia,) yields oil. From the seeds of the Pongamia glabra, or Galidupa arborea, a honey brown and almost tasteless oil is procured, which is fluid at common temperatures, but gelatinises at 55 degrees.
Other sources of oil are the Celastrus paniculatus (?) Balanites Egyptictca and the saul tree (Shorea Robusta).
THE CANDLE-TREE or PALO BE VELAS, (Parmentiera cereifera, Seemann.)—This tree, in the valley of the Chagres, South America, forms entire forests. In entering them a person might almost fancy himself transported into a chandler’s shop. From all the stems and lower branches hang long cylindrical fruits, of a yellow wax color, so much resembling a candle as to have given rise to the popular appellation. The fruit is generally from two to three, but not unfrequently four feet long, and an inch in diameter. The tree itself is about 24 feet high, with, opposite trifoliated leaves, and large white blossoms, which appear throughout the year, but are in greatest abundance during the rainy season. The Palo de Velas belongs to the natural order Crescentiaceae, and is a Parmentiera, of which genus hitherto only one species, the P. edulis, of De Candolle, was known to exist. The fruit of the latter, called Quauhscilote, is eaten by the Mexicans, while that of the former serves for food to numerous herds of cattle. Bullocks especially, if fed with the fruit of this tree, guinea-grass, and Batatilla (Ipomœa brachypoda, Benth.), soon get fat. It is generally admitted, however, that the meat partakes in some degree of the peculiar apple-like smell of the fruit, but this is by no means disagreeable, and easily prevented, if, for a few days previous to killing the animal, the food is changed. The tree produces its principal harvest during the dry season, when all the herbaceous vegetation is burned up, and on that account its cultivation in tropical countries is especially to be recommended; a few acres of it would effectually prevent that want of fodder which is always most severely felt after the periodical rains have ceased.—(“Hooker’s Journal of Botany.”)
CINNAMON SUET is extracted by boiling the fruit of the cinnamon. An oily fluid floats on the surface, which on cooling subsides to the bottom of the vessel, and hardens into a substance like mutton suet. The Singhalese make a kind of candles with it, and use it for culinary purposes. It emits a very pleasant aroma while burning. According to the analysis of Dr. Christison, it contains eight per cent, of a fluid not unlike olive oil; the remainder is a waxy principle.
CROTON OIL is obtained by expression from the seeds or nuts of Croton Tiglium, an evergreen tree, 15 to 20 feet in height, belonging to the same order as the castor oil plant, producing whitish green flowers, and seeds resembling a tick in appearance, whence its generic name. It is a native of the East Indies. 100 parts of seeds afford about 64 of kernel. 50 quarters of croton nuts for expressing oil were imported into Liverpool from the Cape Verd Islands, in 1849.
The Croton Tiglium grows plentifully in Ceylon, and the oil, if properly expressed, might be made an article of trade. The best mode of preparing it is by grinding the seeds, placing the powder in bags, and pressing between plates of iron; allow the oil to stand for fifteen days, then filter. The residue of the expression is triturated with twice its weight of alcohol, and heated on the sand-bath from 120 to 140 degs. Fahrenheit, and the mixture pressed again. In this step the utmost caution is necessary in avoiding the acrid fumes. One seer of seed furnishes by this process rather more than eleven fluid ounces of oil, six by the first step, and five by alcohol.
The oil acts as an irritant purgative in the dose of one drop. In large doses it is a dangerous poison. When applied externally it produces pustules.
In 1845, eight cases of croton oil and six cases of the seed were exported from Ceylon.
Other species of Croton, as C. Pavana, a native of Ava and the north-eastern parts of Bengal, and C. Roxburghii, yield a purgative oil. The bark of C. Eleuteria, C. Cascarilla, and other species is aromatic, and acts as a tonic and stimulant. It forms the cascarilla bark of commerce already spoken of. When bruised, it gives out a musky odor and is often used in pastilles.
The oil obtained from the seeds of Jatropha curcas, a native of South America and Asia, is purgative and emetic, and analagous in its properties to croton oil. It is said to be a valuable external application in itch. In India it is used for lamps.
OIL OF BEN, known as Sohrinja in Bengal, and Muringo in Malabar is obtained from the seeds or nuts of the horseradish tree, Moringa pterygosperma, Burmann; the Hyperanthera Moringa, of Linnæus. This clear limpid oil having no perceptible smell, is much esteemed by watchmakers and perfumers; it is expensive and not often to be procured pure, consequently the oil would be a very profitable export. It grows rapidly and luxuriantly everywhere in Jamaica, particularly on the north side of the island—as well as Trinidad and other quarters of the West. It is easily propagated either by cuttings from the tree (the branches) or by seeds, and bears the second year. The produce of each tree may be estimated at from one to two gallons. From the flowers a very pleasant perfume might be easily distilled.
The following account I derive from my friend Dr. Hamilton—
“It is a small tree, of about twenty feet in height, of most rapid growth, coming into flower within a few months after it has been sown, and continuing to produce seeds and blossoms afterwards throughout the year. The tree is now naturalised in the West Indies. The timber is said to dye a fine blue, and the gum, which, exudes from wounds in the bark, bears a strong resemblance to that obtained from the Astragalus tragacantha, for which it might, no doubt, be substituted.
The numerous racemes of white blossoms with which the tree is constantly loaded, are succeeded by long triangular pods, somewhat tourlose at the ends, and about two feet in length, when arrived at the full growth. These pods, while yet young and tender, are not unfrequently cooked and served up at the planter’s tables like asparagus, for which they are not a bad substitute. The pods, when full grown, contain about fifteen seeds; each considerably larger than a pea, with a membraneous covering expanding into three wings, whence the specific name of pterygosperma. On removing the winged envelope the seeds appear somewhat like pith balls; but upon dividing them with the nail, they are found to abound in a clear, colorless, tasteless, scentless oil, of which the proportion is so large that it may be expressed from good fresh seeds by the simple pressure of the nail. Geoffry informs us, that he obtained 30½ ounces of oil from eight pounds of the decorticated seeds, being at the rate of very nearly 24 lbs. of oil from 100 lbs. of seed.
Notwithstanding the great value of its oil, and the facility with which it can be obtained in the West Indies, the moringa has been hitherto valued merely as an ornamental shrub, and cultivated for the sake of its young pods or the horseradish of its roots, as luxuries for the table.
The oil is peculiarly valuable for the formation of ointments, from its capability of being kept for almost any length of time without entering into combination with oxygen. This property, together with the total absence of color, smell, and taste, peculiarly adapts it to the purposes of the perfumer, who is able to make it the medium for arresting the flight of those highly volatile particles of essential oil, which constitute the aroma of many of the most odoriferous flowers, and cannot be obtained by any other means, in a concentrated and permanent form. To effect this, the petals of the flowers, whose odor it is desired to obtain, are thinly spread over flakes of cotton wool saturated with this oil, and the whole enclosed in air tight tin cases, where they are suffered to remain till they begin to wither, when they are replaced by fresh ones, and the process thus continued till the oil has absorbed as much as was desired of the aroma; it is then separated from the wool by pressure, and preserved under the name of essence, in well stopped bottles.
By digesting the oil thus impregnated in alcohol, which does not take up the fixed oil, a solution of the aroma is effected in the spirit, and many odoriferous tinctures or waters, as they are somewhat inaccurately termed, prepared. By this process most delicious perfumes might be obtained from the flowers of the Acacia tortuosa, Pancratium carribeum, Plumeria alba, Plumeria rubra, and innumerable other flowers, of the most exquisite fragrance, which abound within the tropics, blooming unregarded, and wasting their odors on the barren air.”
THE OIL PALM.
There are several species of this genus of beautiful palms of the tribe Cococinæ, but that chiefly turned to account is Elais guineensis, a native of the Coast of Guinea to the south of Fernando Po, which furnishes the best oil.
There are three other varieties—E. melanococca, a native of New Granada, E. Pernambucana, common on the coast of Brazil, and J. occidentalis, indigenous to Jamaica. All the species grow well in a sandy loam and may be increased by suckers.
The value of the oil of this palm, as an article of commerce, is exemplified by the large annual imports, averaging more than 516,000 cwt. for many years past.
Our supplies of palm oil are almost wholly derived from the West Coast of Africa, of which it is the staple article of export.
Palm oil has the greatest specific gravity of any of the fixed vegetable oils. It is used principally in this country for making yellow soap. But the inhabitants of the Guinea coast employ it for the same purposes that we do butter.
The trade in palm oil has almost driven out the slave trade from the Bight of Benin, which was a few years ago one of its principal seats. The old slave traders at Whydah have generally gone into the palm oil trade, and are carrying it on to a very great extent. In August 1849, no less than twelve vessels were lying at that port taking in oil; whilst, only three years before, it was rare to see three vessels there at once, and of those in all probability two would be slavers.
This palm is called Maba by the natives about the Congo river. It is moneocious, which indeed Jacquin, by whom the genus was established, concluded it to be, although first described as diœcious by Gaertner, whose account has been adopted, probably without examination, by Schroder, Willdenow, and Persoon.
The average imports of this oil into Liverpool alone, have now been for some years upwards of 18,000 tons, worth nearly £800,000 sterling, and giving employment to upwards of 30,000 tons of shipping; thus proving that the natives who formerly exported their brethren as a matter of traffic, now find, at least, an equally profitable trade in the exportation of the vegetable products of their native soil.
Palm oil is produced by the nut of the tree, which grows in the greatest abundance throughout Western Africa. The demand for it, both in Europe and America, is daily increasing, and there is no doubt it will, ere long, become the most important article of African trade.
| IMPORTS INTO LIVERPOOL. | ||
| casks. | tons. | |
| 1835 | 28,500 | 9,500 |
| 1836 | 33,500 | 11,000 |
| 1837 | 26,000 | 9,900 |
| 1838 | 27,520 | 10,320 |
| 1839 | 36,500 | 14,300 |
| 1852 about | — | 23,500 |
In the colony of Liberia, I notice the manufacture of a new article of African production, which is called “Herring’s Palm Kernel Oil or African Lard.” It is thus spoken of in the newspapers of that Republic:—
We had been for a long time impressed with an idea that the oil contained in the kernel of the palm nut, was superior both in quality and appearance to that of palm oil, which is obtained from the exterior part.
On making an effort to extract the oil from the kernel (which was by means of a little machine, of our own invention and contrivance), we found that our thoughts upon the matter were correct, that the oil possessed admirable beauty in its appearance, with a taste, when used for cooking purposes, unexcelled by that of the best lard.
After being made and set by, it assumes a consistence like that of hard butter, and has to be cut out with a knife or spoon; its appearance in this state is very beautiful, presenting such richness, clearness, and adaptedness to table purposes, that one would not suppose that this oil is obtained from the same tree from which palm oil is, for there is as much disparity both in their appearance and taste as there is between lard and butter.
The exquisite transparency which the kernel oil bears in a liquid state, especially when undergoing the purifying process, is a cause of admiration. On showing some of it to several foreigners, I was asked in two instances which was the oil and which the water, or whether it was oil or water; thus you may have an idea of its clearness. We make two qualities of this oil, differing however in taste only, the one being for table uses and the other for exportation and for whatever use they may choose to put it to abroad.
There have been many conjectures in respect to the uses to which this oil might he put in foreign countries; but that it will be a useful article, and especially in our trade, when made more extensively, there can be no doubt, for the quantity in which it might be had would undoubtedly introduce it to a respectable rank among the other commodities of our productive country so eagerly sought after.
There is nothing, to my knowledge, that can be turned to as good account and at the same time so abundant and easily obtained, as the palm kernel, for they are as common as the pebbles of stony land, especially in this section of the country, where we have palm orchards of spontaneous growth for miles together, and interspersing the surrounding country in almost innumerable numbers.
According to statistical ascertainment, there is on an average exported from this port, thirty thousand gallons of palm oil annually, from which fact we ascertain demonstratively that the palm kernels which are thrown away here (leaving out the whole leeward coast of our possessions) are sufficient to make thirty thousand gallons of oil, more or less. This is not at all a problematical speculation of ours, but we feel authorised to advance this assertion from the fact that one bushel of kernels, completely worked up, will make two gallons of oil. But to work them up is the thing, plentiful as they are; we however, hesitate not to say, that it can be done and probably will be.
Having now so far conquered the difficulties attending the manufacture of this oil, as that we can safely vouch a reasonable supply for home consumption, we most cheerfully recommend it to the citizens of this Republic, whose demands for it, for eating purposes, we doubt not can be supplied, and on very reasonable terms.
We will assure our customers that there will not be an ounce of dirt or sediment in a hundred pounds of our oil.
The recent abolition of the soap duty, by stimulating the demand for palm oil, will have an instant effect on the trade and commerce of Western Africa, by confirming the suppression of the slave trade, and giving an additional impetus to negro improvement. It will also increase the production for England of ground nuts, whence the oil so largely used in making continental soaps is expressed. “When (observes a recent writer) the Portuguese first treated with that coast, they found palm oil and ground nuts articles of native food, and so they remained down to a period within living memory. So used, they neither required any cultivation nor gave rise to any notions of property. Though whole tracts of country are crowded by the oil-palm tree, little care was taken of what was, in fact, superabundant; and as for ground nuts, they were simply dug up as prudence or necessity dictated. Some thirty years ago a cask or two of palm oil was sent home from the Gold Coast; it met so ready a sale that it was further inquired after, and the total amount now imported into England ranges from 25,000 to 30,000 tons annually. The exportation of ground nuts is even larger; but, owing to our excise on soap, they had heretofore gone principally to France—-to Marseilles especially.
“Of these two articles, it is to be observed, the Western Coast of Africa appears to have a monopoly; and with respect to palm oil, it is further to be remarked, that it is exactly behind those ports and up those rivers, which were formerly the great nests of the slave trade, that its production is largest; and just as the slave trade there has been crushed, a commerce in palm oil has sprung up and replaced it. There are men alive who recollect the slave trade flourishing on the Gold Coast; it has long been extinct there, and palm oil is now largely exported. It is but a very few years ago since that traffic appeared to be irrepressible at the mouths of the Niger: it is now expelled, and thence Liverpool obtains, instead, its supplies of palm oil. So also, later still, at Whydah, and the other ports of the kingdom of Dahomy, and along the Lagoon, which connects Dahomy with the Benin River, there the Spanish slave dealers are themselves inaugurating a commerce in palm oil. Already the trade in that quarter is considerable, and it would have extended much more rapidly than it has done, were it not that disorder and warfare in the interior have been promoted and prolonged by the indiscreet zeal of some of our own naval officers and by the desire of some of our missionaries to rule at Abeeokutu, at Lagos, and at Badagray. When, however, order and tranquillity are restored, a most important trade will undoubtedly arise there. A generation ago, when palm oil was merely an article of food, there was, we have said, no property in palm trees. Since, however, a large foreign demand has arisen for this oil, the plantations, as already they are called, begin to be cared for; and lately the title to some of them has been disputed in our courts on the Gold Coast: a contention which constitutes the first evidence we have received of the value of land, not actually under their own cultivation, being recognised by the natives. Thus the feeling of property and the desire for accumulation are springing up out of the palm oil trade; and they are everywhere the germs of nascent civilisation. It is no light question, therefore, thus involved in an increased demand for this article; it may produce African consequences of incalculable importance to the whole human race. It is in France hitherto that the great consumption of ground nut oil has occurred. It is there used in the manufacture of soaps, which, though preferred abroad, are little used in England—very much because of the Excise laws. The specific gravity of the soap made out of ground nut oil is higher than those laws permitted; in consequence we could neither make it for our own use nor for foreign exportation; and thus France has substantially the soap trade of the world. By the repeal of the duty, England will be enabled to compete—in this, as in all other trades—with France abroad.”
The price, in Liverpool, for palm oil, in October, 1853, was £38 10s. to £39 per ton.
We export annually nearly four million gallons of oil made from linseed, hemp seed, and rape seed.
Palm Oil Retained for Home Consumption
| cwts. | |
| 1835 | 242,733 |
| 1836 | 234,357 |
| 1837 | 211,919 |
| 1838 | 272,991 |
| 1839 | 262,910 |
| 1840 | 314,881 |
| 1841 | 300,770 |
| 1842 | 353,672 |
| 1843 | 377,765 |
| 1844 | 363,335 |
| 1848 | 510,218 |
| 1849 | 493,331 |
| 1850 | 448,589 |
| 1851 | 493,598 |
| 1852 | 408,577 |
The quantity of the four principal vegetable oils annually imported into Great Britain, is shown by the following figures:—
| Palm oil. | Coco-nut oil. | Castor oil. | Olive oil. | |
| cwts. | cwts. | cwts. | tuns. | |
| 1848 | 510,218 | 85,463 | 4,588 | 10,086 |
| 1849 | 493,331 | 64,452 | 9,681 | 16,964 |
| 1850 | 448,589 | 98,040 | — | 20,738 |
| 1851 | 608,550 | 55,995 | — | 11,503 |
| 1852 | 623,231 | 101,863 | — | 8,898 |
THE OLIVE-TREE (Olea Europea).—There are several varieties of this plant, two of which have been long distinguished—the wild and the cultivated. The former is an evergreen shrub or low tree, with spiny branches and round twigs; the latter is a taller tree, without spines, and with four-angled twigs. The fruit is a drupe about the size and color of a damson. Its fleshy pericarp yields by expression olive oil, of which the finest comes from Provence and Florence. Spanish or Castile soap is made by mixing olive oil and soda, while soft soap is made by mixing the oil with potash.
The wild olive is indigenous to Syria, Greece, and Africa, on the lower slopes of Mount Atlas. The cultivated species grows spontaneously in Syria, and is easily reared in Spain, Italy and the South of France, various parts of Australia and the Ionian Islands. Wherever it has been tried on the sea-coasts of Australia, the success has been most complete. There are several fine trees near Adelaide, some of them fourteen feet high, bearing fruit in abundance. Unfortunately no one has attempted to cultivate the plant on a large scale, but in a few years Australia ought to suply herself with olive oil.
The olive tree is also grown in Hong-Kong.
There are five or six varieties of O. Europœa, or sativa, grown in the south of Europe, of which district they are for the most part natives.
The entire exports of olive oil from the kingdom of Naples have been estimated at 36,333 tuns a year, which, taken at its mean value when exported at £62 per tun, is equivalent to the annual sum of £2,252,646.
There are one or two distinct species, natives of the East Indies and the Cape of Good Hope. This genus of plants, besides their valuable products of oil and fruit, are also much admired for the fragrance of their white flowers. There is a yellow-blossomed variety, native of China, O. fragrans, the Lan-hoa of the Chinese, which is used to perfume their teas.
Olive oil now forms an article of export from Chili, being grown in most parts of that republic, particularly in the vicinity of St. Jago, where trees of three feet in diameter, and of a proportionate height, are common. The olive was first carried from Andalusia to Peru in 1560, by Antonio de Ribera, of Lima. Frezier speaks of the olive being used for oil in Chili, a century and a half ago.
The culture of the olive has been recommended for Florida and most of the Southern States of America. Formerly, on account of its slow growth, the olive was not considered very useful; but some years since a new variety was introduced into France, and into some parts of Spain and Portugal, which yields an abundant crop of fruit the second year after planting. They are small trees or rather shrubs, about four or five feet high. The fruit is larger than the common olive, is of a fine green color when ripe, and contains a great deal of oil, The advantages accruing from this new mode of cultivating the olive tree, are beyond all calculation. By the old method an olive tree does not attain its full growth, and consequently does not yield any considerable crop under thirty years; whereas the new system of cultivating dwarf trees, especially from cuttings, affords very abundant crops in two or three. An acre of land can easily grow 2,500 trees of the new variety, and the gathering of the fruit is easy, as it can be done by small children. At Beaufort, South Carolina, the olive is cultivated from plants which were obtained in the neighbourhood of Florence, Italy.
A gentleman in Mississippi is stated, by an American agricultural journal, to have olive trees growing, which at five years from the cutting bore fruit, and were as large at that age as they usually are in Europe at eight years old. The olive then, it is added, will yield a fair crop for oil at four years from the nursery, and in eight years a full crop, or as much as in Europe at from fifteen to twenty years of age.
The lands and climate there are stated to be as well adapted to the successful cultivation of the olive for oil, pickles, &c., as any part of Europe. Some hundreds of the trees are grown in South Carolina, and the owner expressed his conviction that this product would succeed well on the sea-coast of Carolina and Georgia. The frosts, though severe, did not destroy or injure them, and in one case, when the plant was supposed to be dead, and corn was planted in its stead, its roots sent out shoots. It is well known to be a tree of great longevity, even reaching to 1,000 or 1,200 years; so that, when once established, it will produce crops for a great while afterwards. The expense of extracting the oil is also stated to be but trifling.
The olive is of slow growth; trees 80 years of age measure only from 27 to 30 inches in circumference at the lower part of their trunks. An olive tree is mentioned by M. Decandolle as measuring above 23 feet in circumference, which, judging from the above inferences, may be safely estimated at 700 years old. Two other colossal olives are recorded, one at Hieres, measuring in circumference 36 feet, and one near Genoa, measuring 38 feet 2 inches. The produce in fruit and oil is regulated by the age of the trees, which are frequently little fortunes to their owners. One at Villefranche produces on an average, in good seasons, from 200 to 230 pounds of oil. The tree at Hieres, above-mentioned, produces about 55 imperial gallons.
The olive is found everywhere along the coast of Morocco, but particularly to the south. The trees are planted in rows, which form alleys, the more agreeable because the trees are large, round, and high in proportion. They take care to water them, the better to preserve the fruit. Oil of olives might be here plentifully extracted were taxation fixed and moderate; but such has been the variation it has undergone, that the culture of olives is so neglected as scarcely to produce oil sufficient for domestic consumption.
Olive oil might form one of the most valuable articles of export from Morocco. It is strong, dark, and fit only for manufacturing purposes. This is, perhaps, not so much the fault of the olive as of the methods by which it is prepared. No care is taken in collecting the olives. They are beaten from the trees with poles, as in Portugal and Spain, suffered to lie on the ground in heaps until half putrified, then put into uncleaned presses, and the oil squeezed through the filthy residuum of former years. Good table oil might be made, if care were taken, as in France and Lucca, to pick the olives without bruising them, and to press only those that were sweet and sound. But such oil would ill suit the palate of a Maroqueen, accustomed to drink by the pint and the quart the rancid product of his country.
The olive is the great staple of Corfu, which has, in fact, the appearance of an extensive olive grove. It produces annually about 200,000 barrels. Olive oil is also produced for the purposes of commerce, and for local consumption, by France, Algiers, Tuscany, Spain, Sardinia, Portugal, Madeira, and South Australia.
Olive plantations are extending considerably both in Upper and Lower Egypt. Large quantities of trees were planted under the direction of Ibrahim Pasha.
The olive tree might be expected to be quickly matured at the Cape. The native olive, resembling the European, is of spontaneous growth and plentiful, so that if the Spanish or Italian tree were introduced, there is no doubt of its success. The wood of the olive is exceedingly hard and heavy, of a yellowish color, a close fine grain, capable of the highest polish, not subject to crack nor to be affected by worms. The root, in consequence of its variety of color, is much used for snuff-boxes and similar bijouterie.
The wood is beautifully veined, and has an agreeable smell. It is in great esteem with cabinet makers, on account of the fine polish of which it is susceptible.
The sunny slopes of hills are best suited to its natural habits. Layering is the most certain mode of propagating this fruit, although it grows freely from the seed, provided it has first been steeped for twelve hours in hot water or yeast.
Olives intended for preservation are gathered before they are ripe. In pickling, the object is to remove their bitterness and preserve them green, by impregnating them with a brine. For this purpose various methods are employed. The fruit being gathered are placed in a lye, composed of one part of quicklime to six of ashes of young wood sifted. Here they remain for half a day, and are then put into fresh water, being renewed every 24 hours; from this they are removed into a brine of common salt dissolved in water, to which add some aromatic plants. The olive will in this manner remain good for twelve months. For oil, the ripe fruit is gathered in November; the oil, unlike other plants, being obtained from the pericarp, and immediately bruised in a mill, the stones of which are set so wide as not to crush the kernel. The pulp is then subjected to the press in bags made of rushes; and, by means of a gentle pressure, the best or virgin oil flows first. A second, and afterwards a third quality of oil is obtained, by moistening the residuum, breaking the kernel, &c., and increasing the pressure. When the fruit is not sufficiently ripe, the recent oil has a bitterish taste, and when too ripe it is fatty.
The following are the present market prices of olive oil in Liverpool, (October, 1853,) and they are 40 per cent, higher than a few years ago:—Galipoli, per tun of 252 gallons, £68; Spanish, £64; Levant, £60. French olives, in half barrels of two gallons, are worth £3 to £4; Spanish, in two gallon kegs, 9s. to 10s.
The preserved or pickled olives, so admired as an accompaniment to wine, are, as we have seen the green unripe fruit, deprived of part of their bitterness by soaking them in water, and then preserved in an aromatised solution of salt.
The marc of olives after the oil has been expressed, indeed, the refuse cake of all oil plants, is most valuable, either as manure or for feeding cattle.
More than 29,000 acres are under culture with the olive in the Austrian empire, Venice, Dalmatia, Lombardy, Carinthia, and Carniola. The climate of Dalmatia is highly suitable for the olive, and the oil is better than that produced in most parts of Italy. Nearly 17,000 cwt. are annually obtained.
In 1837 there were 11,526 acres of ground under cultivation with olives in Southern Illyria, which yielded 261,800 gallons. Olives and sumach form the principal crops of the landholder. I have not been able to get any recent correct statistics of the culture and produce. The oil of Istria is considered equal to that of Provence. The stones and refuse are used there for fuel. The olive is also extensively cultivated in the Quarnero Islands, especially Veglia and Cherso, and in Corfu. There were in 1836, 219,339 acres under cultivation in the Ionian Islands, producing 113,219 barrels. The olive is gathered there in December. The average price of the barrel of olive oil was 48s. 3d. Nearly two millions of gallons of olive oil were exported from Sicily in 1842. Naples alone shipped five millions of gallons in 1839, and about 2,500 cwts. of oil is shipped annually from Morocco. Russia imports about 500,000 poods (40 lbs. each) of olive oil annually.
“Provence oil, the produce of Aix, is the most esteemed. Florence oil is the virgin oil expressed from the ripe fruit soon after being gathered; it is imported in flasks surrounded by a kind of network formed by the leaves of a monocotyledonous plant, and packed in half chests; it is that used at table under the name of salad oil. Lucca oil is imported in jars holding nineteen gallons each. Genoa oil is another fine kind. Galipoli oil forms the largest portion of the olive oil brought to England, it is imported in casks. Apulia and Calabria are the provinces of Naples most celebrated for its production; the Apulian is the best. Sicily oil is of inferior quality; it is principally produced at Milazzo. Spanish oil is the worst. The foot deposited by olive oil is used for oiling machinery, under the name of’ droppings of sweet oil.’”—(“Pereira’s Materia Medica.”)
The manufacture of olive oil in Spain has undergone very considerable improvement during the last few years; in particular, the process for expressing the oil has been rendered more rapid and effectual by the introduction of the hydraulic press, and thus the injurious consequences which resulted from the partial fermentation of the fruit are avoided.
There are four different kinds of oil known in the districts where it is prepared.
1. Virgin oil—A term which is applied, in the district Montpellier, to that which spontaneously separates from the paste of crushed olives. This oil is not met with in commerce, being all used by the inhabitants, either as an emollient remedy, or for oiling the works of watches. A good deal of virgin oil is, however, obtained from Aix.
2. Ordinary oil.—This oil is prepared by pressing the olives, previously crushed and mixed with boiling water. By this second expression, in which more pressure is applied than in the previous one, an oil is obtained, somewhat inferior in quality to the virgin oil.
3. Oil of the infernal regions.—The water which has been employed in the preceding operation is in some districts conducted into large reservoirs called the infernal regions, where it is left for many days. During this period, any oil that might have remained mixed with the water separates and collects on the surface. This oil being very inferior in quality, is only fit for burning in lamps, and is generally locally used.
4. Fermented oil is obtained in the departments of Aix and Montpellier, by leaving the fresh olives in heaps for some time, and pouring boiling water over them before pressing the oil. But this method is very seldom put in practice, for the olives during this fermentation lose their peculiar flavor, become much heated, and acquire a musty taste, which is communicated to the oil.
The fruity flavor of the oil depends upon the quality of the olives from which it is pressed, and not upon the method adopted in its preparation,”—(French “Journal de Pharmacie.”)
The price of olive oil is sufficiently high to lead to its admixture with cheaper oils. The oil of poppy seeds is that which is usually employed for its adulteration, as it has the advantage of being cheap, of having a sweet taste, and very little smell. M. Gobley has invented an instrument which he calls an areometer, to detect this fraud. It is founded on the difference between the densities of olive oil and oil of poppies.
The imports, which in 1826 were only 742,719 gallons, had risen in 1850 to 5,237,816 gallons. The following figures show the progressive imports and consumption:—
| Imported. gallons. | Retained for home consumption. gallons. | |
| 1827 | 1,028,174 | 1,070,765 |
| 1831 | 4,158,917 | 1,928,892 |
| 1835 | 606,166 | 554,196 |
| 1839 | 1,793,920 | 1,806,178 |
| 1843 | 3,047,688 | 2,516,724 |
| 1847 | 2,190,384 | — |
| 1848 | 2,541,672 | — |
| 1849 | 4,274,928 | — |
| 1850 | 5,860,806 | — |
| 1851 | 2,898,756 | 2,749,572 |
| 1852 | 2,242,296 | 1,066,400 |
The imports of olive oil into the port of Liverpool were 9,815 tuns in 1849, and 10,038 tuns in 1850. It was brought from Manila, Malaga, and Corfu, but chiefly from Barbary, Palermo, Gallipoli, and the Levant. In 1850 we imported from France 259,646 imperial gallons of olive oil, officially valued at £34,638; the average in ordinary years is only about 20,000 gallons from the continent.
ALMOND OIL.—To the south of the Empire of Morocco there are forests of the Arzo tree, which is thorny, irregular in its form, and produces a species of almond exceedingly hard. Its fruit consists of two almonds, rough and bitter, from which an oil is produced, very excellent for frying. In order to use this oil it requires to be purified by fire, and set in a flame, which must be suffered to die away of itself; the most greasy particles are thus consumed, and its arid qualities wholly destroyed. “When the Moors gather these fruits they drive their goats under the trees, and as the fruit falls the animals carefully nibble off the skins, and then greedily feed.
The oil of almonds is more fluid than olive oil, and of a clear, transparent, yellowish color, with a very slight odor and taste. It is occasionally employed for making the finer kinds of soap, and also in medicine.
In manufacturing it the fruit are first well rubbed or shaken in a coarse bag or sack, to separate a bitter powder which covers their epidermis. They are then pounded to a paste in mortars of marble, which paste is afterwards subjected to the action of a press, as in the case of the olive.
About 80 tuns of almond oil are annually imported into this country, the price being about 1s. per pound. Five-and-a-half pounds of almond oil will yield by cold expression one pound six ounces of oil, and three-fourths of a pound more if the iron plates are heated.
SESAME OR TEEL.—Of this small annual plant there are two or three species. Sesamum orientale, the common sort; and S. indicum, a more robust kind, cultivated at a different season, are both natives of the East Indies. S. indicum bears a pale purple flower, and S. orientals has a white blossom. It is the latter which is chiefly grown, and the seeds afford the Gingellie oil or suffed-til, already extensively known in commerce in the East. The expressed oil is as clear and sweet as that from almonds, and probably the Behens oil, used in varnish, is no other. It is called by the Arabs “Siriteh,” and the seed, “bennie” seed, in Africa. S. orientals is grown in the West Indies under the name of “wangle.” It is said to have been first brought to Jamaica by the Jews as an article of food. 1,050 bags of gingelly teel, or sesame seed, were imported into Liverpool, in 1849, from the East, South America, and Africa, for expressing oil, and 3,700 bags in 1850. There are two kinds of seed, light and dark, and it is about the same size as mustard seed, only not round.
A hectare of land in Algeria yields 1,475 kilogrammes of seed, which estimated at 50 cents the kilogramme, amounts to 737 francs, whilst the cost of production is only 259 francs, leaving a profit of 478 francs (nearly £20). The oil obtained from this seed is inferior to good olive oil, but is better adapted for the manufacture of soap.
This plant is not unlike hemp, but the stalk is cleaner and semi-transparent. The flower also is so gaudy, that a field in blossom looks like a bed of florist’s flowers, and its aromatic fragrance does not aid to dispel such delusion. It flourishes most upon land which is light and fertile. The fragrance of the oil is perceptibly weaker when obtained from seed produced on wet, tenacious soils. A gallon of seed seems to be the usual quantity sown upon an acre. In Bengal, S. orientale is sown during February, and the crop harvested at the end of May; but S. indicum is sown on high, dry soil, in the early part of the rains of June, and the harvest occurs in September. About Poonah it is sown in June and harvested in November. In Nepaul two crops are obtained annually; one is sown as a first crop in April and May, and reaped in October and November; the other as an autumn crop, after the upland rise in August and September, and reaped in November and December.
In Mysore, after being cut it is stacked for a week, then exposed to the sun for three days, but gathered into heaps at night; and between every two days of such drying, it is kept a day in the heap. By this process, the pods burst and shed their seeds without thrashing.
The seeds contain an abundance of oil, which might be substituted for olive oil; it is procured from them in great quantities, in Egypt, India, Kashmir, China, and Japan, where it is used both for cooking and burning. It will keep for many years and not acquire any rancid smell or taste, but in the course of a year or two becomes quite mild, so that when the warm taste of the seed, which is in the oil when first expressed, is worn off, it is used for all the purposes of salad oil. It possesses such qualities as fairly entitle it to introduction into Europe; and if divested of its mucilage, it might perhaps compete with oil of olives, at least for medicinal purposes, and could be raised in any quantity in the British Indian Presidencies. It is sufficiently free from smell to admit of being made the medium for extracting the perfume of the jasmine, the tuberose, narcissus, camomile, and of the yellow rose. The process is managed by adding one weight of flowers to three weights of oil in a bottle, which being corked is exposed to the rays of the sun for forty days, when the oil is supposed to be sufliciently impregnated for use. This oil, under the name of Gingilie oil, is used in India to adulterate oil of almonds.
The flour of the seed, after the oil is expressed, is used in making cakes, and the straw serves for fuel and manure.
The oil is much used in Mysore for dressing food, and as a common lamp oil. From 200 to 400 quarters under the name of Niger seed are imported annually into Liverpool for expressing oil.
Three varieties of Til are extensively cultivated throughout India, for the sake of the fine oil expressed from their seeds, the white seeded variety, the parti-colored, and the black. It is from the latter that the sesamum or gingelly oil of commerce is obtained. Sesamum seed contains about 45 per cent. of oil. Good samples of the oil were shown at the Great Exhibition from Vizianagram, Ganjain, Hyderabad, Tanjore, the district of Moorshedabad, and Gwalior. The gingelly seed is stated to be worth about £4 per ton in the North Circars.
An oil resembling that of sesamum is obtained from the seed of Guizotea oleifera and Abyssinica, a plant introduced from Abyssinia, and common in Bengal. The ram til, or valisaloo seeds, yield about 34 per cent, of oil. The oil is generally used for burning, and is worth locally about 10d. per gallon.
BLACK TIL (Verbesena sativa).—This is known as kutsela or kala til, in the Deccan. It is chiefly cultivated in Mysore and the western districts of Peninsular India, as well as in the Bombay presidency.
About Seringapatam, as soon as the millet crop has been reaped the field is ploughed four times, and the seed sown, a gallon per acre, during the month of July or August, after the first heavy rain. No manure or weeding is required, for the crop will grow on the worst soils. It is reaped in three months, being cut close to the ground, and stacked for a week. After exposure to the sun for two or three days, the seed is beaten out with a stick. The crop in Mysore rarely yields two bushels per acre, but about Poonah the produce is much larger. The seed is sometimes parched and made into sweetmeats, but is usually grown for its oil. This is used in cooking, but it is not so abundant in the seed, nor so good as that of the sesame. Bullocks will not eat the stems unless pressed by hunger.
About 5,000 maunds are exported annually from Calcutta. 3,703 bags were imported into Liverpool in 1851. The price per quarter of eight bushels, in January, 1853, was from 30s. to £2; of teel oil, in tins, weighing 60 to 100 pounds, £2 to £2 4s.
Bombay linseed was worth £2 11s. to £2 12s. the quarter of eight bushels, in January, 1853. Bengal ditto 2s. less. The imports into Liverpool were 68,468 bags and 54,834 pockets in 1851, and 14,490 bags and 33,700 pockets in 1852. About 9,000 bags of mustard seed and from 18,000 to 20,000 bags of rape seed are also imported thence. The price of the latter is about £2 the quarter.
NATIVE OIL MILLS.—The principal native oil mill of India, of which, however, there are some varieties, consists of a simple wooden mortar with revolving pestle. It is in common use in all Belgaum and Bangalore. Two oxen are harnessed to the geering, which depends from the extremity of the pestle,—a man sits on the top of the mortar, and throws in the seeds that may have got displaced. The mill grinds twice a day; a fresh man and team being employed on each occasion. When sesame oil is to be made, about seventy seers measure, or two and a half bushels of seeds are thrown in; to this ten seers, or two quarts and three-quarters of water, are gradually added; this on the continuance of the grinding, which lasts in all six hours, unites with the fibrous portion of the seeds, and forms a cake, which, when removed, leaves the oil clean and pure at the bottom of the mortar. From this it is taken out by a coco-nut shell cup, on the pestle being withdrawn. Other seed oils are described by Dr. Buchanan, as made almost entirely in the same way as the sesamum. The exceptions are the hamlu, or castor oil, obtained from either the small or large varieties of Ricinus. This, at Seringapatam, is first parched in pots, containing something more than a seer each. It is then beaten in a mortar, and formed into balls; of these from four to sixteen seers are put in an earthenware pot and boiled with an equal quantity of water, for the space of five hours; frequent care being taken to stir the mixture to prevent it from burning. The oil now floats on the surface, and is skimmed off pure. The oil mill made use of at Bombay, and to the northward, at Surat, Cambay, Kurrachee, &c., differs a little from that just described, in having a very strong wooden frame round the mouth of the mortar; on this the man who keeps the seeds in order sits. In Scinde a camel is employed to drive the mill instead of bullocks.
Castor oil seed is thrown into the mill like other seeds, as already described; when removed it requires to be boiled for an hour, and then strained through a cloth to free it from the fragments of the seed.
It is a curious fact, and illustrative of the imperfect manner in which the oil is separated from the seeds, that while the common pressman only obtained some 26¼ per cent., Boussingault, in his laboratory, from the same seeds, actually procured 41 per cent. When the oil cakes are meant for feeding stock, this loss is of little consequence, inasmuch as the oil serves a very good purpose, but when the cake is only intended to be used as a manure, it is a great loss, inasmuch as the oil is of little or no use in adding any food for crops to the soil.
The chief oil made on the sea board of India, is that yielded by the coco-nut palm. The nut having been stripped of the husk or coir, the shell is broken, and the fatty lining enclosing the milk is taken out. This is called cobri, copra, or copperah in different localities. Three maunds, or ninety pounds of copperah, are thrown into the mill with about three gallons of water, and from this is produced three maunds, or seven and three-quarter gallons of oil. The copperah in its unprepared state is sold, slightly dried in the market. It is burned in iron cribs or grates, on the top of poles as torches, in processions, and as means of illumination for work performed in the open air at night. No press or other contrivance is made use of by the natives in India for squeezing out or expressing the oil from the cake, and a large amount of waste, in consequence of this, necessarily ensues.—Bombay Times, June 5, 1850.
Oil, of the finest kind, is made in India by expression from the kernels of the apricot. It is clear, of a pale yellow color, and smells strongly of hydrocyanic acid, of which it contains, usually, about 4 per cent.
“On inquiring into the use made of the sunflower, we were given to understand that it is here (in Tartary) raised chiefly for the oil expressed from it. But it is also of use for many other purposes. In the market places of the larger towns we often found the people eating the seeds, which, when boiled in water, taste not unlike the boiled Indian corn eaten by the Turks. In some districts of Russia the seeds are employed with great success in fattening poultry; they are also said to increase the number of eggs more than any other kind of grain. Pheasants and partridges eat them with great avidity, and find the same effects from them as other birds. The dried leaves are given to cattle in place of straw; and the withered stalks are said to produce a considerable quantity of alkali.”—Bremner’s Interior of Russia.
658 barrels linseed oil were brought down to New Orleans from the interior in 1849, and 1009 in 1848.
During the period of the Great Exhibition special enquiry was made by many manufacturers as to the different oils of Southern India, suitable for supplying the place of animal fat in the manufacture of candles, and generally adapted for various other purposes. Enquiries should be directed to the specific gravity, the boiling point, the per centage of pure oil in the seeds, and the means of obtaining a regular supply. The demand for vegetable oils in European commerce has been steadily on the increase for several years past, and the quantities consumed are now so large that the oleaginous products of India and the colonies must sooner or later have a considerable commercial importance, from the value which they are likely to acquire. Indeed some have already established a footing in the home market, and Drs. Hunter, Cleghorn, and others in India, have specially directed the attention of the natives and merchants to the subject.
MARGOSE, OR NEEM OIL.—From the pericarp or fleshy part of the fruit of the Melia Azederachta, the well known Margosa oil is prepared; which is cheap and easily procurable in Ceylon. Dr. Maxwell, garrison surgeon of Trichinopoly, states that he has found this oil equally efficacious to cod-liver oil in cases of consumption and scrofula. He began with half-ounce doses, morning and evening, which were gradually reduced.
ILLEPE OIL.—The seeds of three species of Bassia, indigenous to India, yield solid oils, and are remarkable for the fact, that they supply at the same time saccharine matter, spirit, and oil, fit for both food and burning in lamps. The Illepe(B. longifolia) is a tree abundant in the Madras Presidency, the southern parts of Hindostan generally, and the northern province of Ceylon. In Ceylon the inhabitants use the oil in cooking and for lamps. The oil cake is rubbed on the body as soap, and seems admirably adapted for removing the unctuosity of the skin caused by excessive perspiration, and for rendering it soft, pliable, and glossy, which is so conducive to health in a tropical climate. The oil is white and solid at common temperatures, fusing at from 70 to 80 degrees. It may be advantageously employed in the manufacture of both candles and soap; in Ceylon and some parts of India this oil forms the chief ingredient in the manufacture of soap.
Mahower (B. latifolia) is common in most parts of the Bengal Presidency. The oil a good deal resembles that last described, obtained from the Illepe seeds; and may be used for similar purposes. It is solid at common temperatures, and begins to melt at about 70 degrees.
Vegetable butter is obtained from the Choorie (B. butyracea). This tree, though far less generally abundant than the other two species, is common in certain of the hilly districts, especially in the eastern parts of Kumaon; in the province of Dotee it is so abundant that the oil is cheaper than ghee, or fluid butter, and is used to adulterate it. It is likewise commonly burnt in lamps, for which purpose it is preferred to coco-nut oil. It is a white solid fat, fusible at about 120 degrees, and exhibits very little tendency to become rancid when kept.
Shea, or galam butter, is obtained in Western Africa from the Bassia Parkii, or Pentadisma butyracea, a tree closely resembling the B. latifolia, and other species indigenous to Hindostan. According to Park, the tree is abundant in Bambara, the oil is solid, of a greyish-white color, and fuses at 97 degrees. Its product is used for a variety of purposes—for cooking, burning in lamps, &c.
This tree has much of the character of the laurel, but grows to the height of eighteen or twenty feet. Its leaf is somewhat longer than the laurel, and is a little broader at the point; the edges of the leaf are gently curved, and are of a dark sap green color. The nut is of the form and size of a pigeon’s egg, and the kernel completely fills the shell. When fresh it is of a white drab color, but, if long kept, becomes the color of chocolate. The kernel, when new, is nearly all butter, which is extracted in the following manner:—The shell is removed from the kernel, which is also crushed, and then a quantity is put into an earthen pot or pan, placed over the fire with a portion of water and the nut kernels. After boiling slowly about half an hour the whole is strained through a grass mat into a clean vessel, when it is allowed to cool. Then, after removing the fibrous part from it, it is put into a grass bag and pressed so as to obtain all the oil. This is poured into the vessel along with the first-mentioned portion, and when cold is about the consistence of butter.
The nuts hang in bunches from the different boughs, but each nut has its own fibre, about seven or eight inches long, and about the thickness and color of whip-cord. The nut is attached to the fibre in a very singular manner. The end of the fibre is concealed by a thin membrane, about half an inch wide and three-quarters of an inch long. This membrane is attached to the side of the nut, and, when ripe, relinquishes its hold, and the nut falls to the ground, when it is gathered for use. A good-sized healthy tree yields about a bushel of nuts, but the greater number are not so prolific. The trees close to the stream present a more healthy appearance, probably on account of being better watered, and the fire being less powerful close to the stream.
THE CANDLE NUT TREE (Aleurites triloba, of Foster) grows in the Polynesian Islands, and is also met with in some parts of Jamaica and the East Indies. In the latter quarter it is known as the Indian Akhrowt. A very superior kind of paint oil is produced from the nut, and the cake, after the expression of the oil, forms an excellent food for cattle, and a useful manure. 31½ gallons of the nut yield ten gallons of oil, which bears a good price in the home markets.
The yearly produce of this oil in the Sandwich Isles, where it is called kukui oil, is about 10,000 gallons. It has been shipped to the markets of Chili, New South Wales, and London, but not as yet with much profit. It realized about £20 per imperial ton in the port of London. In 1843, about 8,620 gallons were shipped from Honolulu, valued at 1s. 8d. per gallon.
In Ceylon the oil is known as kekune oil, and a good deal of it might be obtained there from the district of Badulla. From the trials made it appears that it cannot be used as a drying oil, but will probably answer best as a substitute for rape oil. Samples have been sent to several clothiers, and the nature and quality of the oil renders it most applicable to their purposes.
COLZA (Brassica oleracea), a variety of the common cabbage, is much grown in the South of Europe and other parts, for the oil obtained by pressure from its seeds, and which is used for lamps and other purposes. The plant will not thrive on sand or clay, but requires a rich light soil. After the ground has been well ploughed and manured, the seed should be sown in July, in furrows eight or ten inches asunder. The plants are transplanted about October. When ripe the stalks are reaped with a sickle, and the seeds threshed out with a flail. The cake, after the oil is expressed, is an excellent food for cattle.
Like all the oleaginous plants cultivated for their seed, colza greatly impoverishes the soil.
In Peru the caoutchouc is used as a substitute for candles. A roll of it (which is generally about a yard long and three inches in diameter) is cut lengthways into four parts, but before it is lighted the piece is rolled up in a green plantain leaf, to prevent it from melting or taking fire down the sides. The natives of Peru also bruize the beans of a species of wild cacao after they have been well dried, and use the substance instead of tallow in their lamps.
Mr. Dearman, writing from Dacca, to Dr. Spry, Secretary to the Agricultural and Horticultural Societies of India, in 1839, says—“I will send you some seeds from a tree, which resemble chestnuts. One of these seeds, after taking off the shell, being stuck on the point of a penknife, and lighted at a candle flame, will burn without the least odor for four or five minutes, giving a light equal to two or three candles. From the flower of the tree (he adds), I am told, is distilled a delightful scent.” [I presume this must be the candle-nut tree.]
At the Feejee and Hawaian islands, the seeds of the castor oil plant and of the candle-nut tree (Aleurites triloba) are strung together and used for candles. Species of torches are also made from the candle wood in Demerara.
THE CANDLEBERRY MYRTLE (Myrica cerifera) abounds in the Bahama Islands. The shrub produces a small green berry, which, like the hog plum, puts out from the trunk and larger limbs. Much patient labor is required in gathering these berries, and from them is obtained a beautiful green wax, which burns very nearly, if not fully, as well as the spermaceti, or composition candles imported from abroad. Not long since Mr. Thos. B. Musgrove, of St. Salvador (or Cat Island), obtained about 80 lbs. of this wax, and made some excellent candles of it. The method of procuring this wax is by boiling the berries in a copper or brass vessel for some time. Iron pots are found to darken and cloud the wax. The vessel after a sufficient time is taken from the fire, and when cool the hardened wax, floating on the top of the water, is skimmed off.
MYRTLE WAX.—According to the experiments of M. Cadet and Dr. Bostock, myrtle wax differs in many respects from bees’ wax, Specimens of it assume shades of a yellowish green color. Its smell is also different; myrtle wax, when fresh, emitting a fragrant balsamic odor. It has in part the unctuosity of bees’ wax, and somewhat of the brittleness of resin. Its specific gravity is greater, insomuch that it sinks in water, whereas bees’ wax floats upon it; and it is not so easily bleached to form white wax. The wax tree of Louisiana contains immense quantities of wax.
Mr. Moodie (“Ten Tears in South Africa”) says,—
“I occasionally employed my people, at spare times, in gathering wax berries that grow in great abundance upon small bushes in the sand hills, near the sea, and yield a substance partaking of the nature of wax and tallow, which is mixed with common tallow, and used by the colonists for making candles. The berry is about the size of a pea, and covered with a bluish powder. They are gathered by spreading a skin on the sand, and beating the bush with a stick. When a sufficient quantity of the berries are collected, they are boiled in a great quantity of water, and the wax is skimmed off as fast as it rises; the wax is then poured into flat vessels and allowed to cool, when it becomes hard and brittle, and has a metallic sound when struck. The cakes thus formed are of a deep green color, and are sold at the same price as tallow. The wild pigs devour these berries when they come in their way, and seem very fond of them.”
A good specimen of myrtle, or candleberry wax, accompanied by candles made from it in the crude unbleached state in New Brunswick, was shown at the Great Exhibition.
Vegetable wax was also sent from Shanghae, in China; from St. Domingo, in the northern parts of which the plant is indigenous; and a remarkable specimen from Japan. This substance, from its high melting point and other physical characteristics, has of late attracted a good deal of attention; it is admirably suited as a material for the manufacture of candles.
At a meeting of the Central Board, at Cape Town, in March, 1853, the members voted about £300, to employ some 20 or 30 men, in gathering berries from the Downs, and making wax during the winter months, that is, from the beginning of May to the end of September. The wax fetches a good price in the Cape market.
In the annual report of the Cape of Good Hope Agricultural Society, in May, 1853, a very fine sample of myrtle, or terry wax, grown on the Cape Flats, was exhibited by Mr. Feeny, Superintendent of the Road Plantation, by direction of the Commissioners of the Central Road Board, in different stages of purification, from green to white, as also some candles; and it being conceived by the meeting that this article might ultimately become one of considerable importance for purposes of export, a letter of thanks was addressed to Mr. Feeny; and Nathaniel Day, the constable who assisted him, was presented with the sum of £5, as a remuneration for his trouble in assisting to purify and prepare the wax. On reference to the juror’s report on the Great Exhibition, it will be gratifying to find that the berry wax, forwarded by this Society, had attracted peculiar notice, and a prize medal been awarded for it; the following reference is therein made to it: “some fine specimens of myrtle or berry wax, from the Cape of Good Hope, are exhibited by J. Lindenberg, of Worcester. This is an excellent material for the manufacture of candles, when employed in conjunction with other solid fats. The jury awarded a prize medal for these specimens.”
Your Committee would suggest every possible attention being drawn to this subject, in which they are gratified to state, the Commissioners of the Central Road Board have evinced a readiness to co-operate, by offering to place at the Society’s disposal the sum of £10 10s., “to be given as a premium for the best information respecting the wax berry plant, the soils and situations in which it is found to grow most luxuriantly: the best mode of propagating and cultivating it, of collecting the berries, and extracting and preparing the wax, &c.” And from a letter received from the Secretary to the Central Road Board, it appears that the Board had authorised the shipment to England of 2,561 lbs. of the wax, by the Queen of the South in November last, which, from the account sales lately received from Messrs. J.R. Thomson & Co., realised as follows, viz.:—
| 4 cases weighing nett 856 lbs. à 8d. | £28 | 10 | 8 | |||
| 4 cases weighing nett 1040 lbs. à 9d. | 39 | 0 | 0 | |||
| 3 cases weighing nett 745 lbs. à 11d. | 34 | 2 | 11 | |||
| 3 cases weighing nett 6 lbs. à 11d. | 0 | 5 | 6 | |||
| £101 | 19 | 1 | ||||
| Discount 2½ per cent. | 2 | 11 | 0 | |||
| £99 | 8 | 1 | ||||
| CHARGES. | ||||||
| Warehouse Entry 3s. 6d. Fire Insurance 2s., Ports 2s. 6d | £0 | 8 | 0 | |||
| Freight | 7 | 3 | 3 | |||
| Primage | 0 | 14 | 4 | |||
| Dock Charges | 3 | 9 | 6 | |||
| Sale Expenses | 0 | 9 | 0 | |||
| Brokerage | 1 | 0 | 6 | |||
| £13 | 4 | 7 | ||||
| Commission at 2½ per cent | 2 | 11 | 0 | |||
| Carried forward | £16 | 15 | 7 | |||
| Brought forward | £16 | 15 | 7 | |||
| £83 | 12 | 6 | ||||
| Deduct Bills of Lading, &c. | 0 | 9 | 6 | |||
| £82 | 13 | 0 | ||||
| Deduct the Board’s expenses for gathering and preparing, &c. | 28 | 8 | 7 | |||
| Leaving a clear profit of | £54 | 4 | 5 | |||
This statement shows that from a plant, which is indigenous to the colony, and might he cultivated to almost any extent, and mostly on soils unavailable for other purposes, an article of great export could be derived at a comparatively small expense; it is with that view that I desire to direct public attention more prominently to it.
In the Museum of the Royal Botanic Gardens, at Kew, wax is shown as scraped from the trunk of the wax palm (Ceroxylon andicola), and candles made from it, as also some made of acorns and closely resembling common tallow. Concrete milk and butter made from the Shea butter tree, and others growing in Para, are also exhibited.
Wax candles have been made from the seeds of Myrica macrocarpa in Colombia, and also from vegetable wax in Java. Some of these are to be seen in the Museum of the Pharmaceutical Society of London.
CASTOR OIL PLANT.
Castor oil is expressed from the seeds of Ricinus communis (Palma Christi), a plant with petale-palmate leaves, which is found native in Greece, Africa, the South of Spain, and the East Indies, and is cultivated in the West Indies, as well as in North and South America. In the temperate and northern parts of Europe, the plant is an herbaceous annual, of from three to eight feet high; in the more southern parts it becomes scrubby and even attains an height of twenty feet; while in India it is often a tree thirty to forty feet high. The best oil is obtained by expression from the seeds without heat, and is hence called “cold drawn oil.” A large quantity of oil may be produced by boiling the seeds, but it is less sweet and more apt to become rancid than that procured by expression.
The Palma Christi grows continuously for about four years, and becomes a large tree in constant bearing, ripening its rich clusters of beans in such profusion, that 100 bushels may be obtained annually from an acre, and their product of oil two gallons per bushel.
There are several species, all of which yield oil of an equally good quality. A shrubby variety is common in South Australia, and other parts of New Holland. Ricinus lividus is a native of the Cape of Good Hope. It is a hardy plant, of the easiest culture, and will thrive in almost any soil, whether in the burning plains or the coldest part of the mountains. The seed should be planted in the tropics in September, singly, and at the distance of 10 or twelve feet apart. They will bear the first season, and continue to yield for years. When the seed-pods become brown, they are in a fit state to pluck. It is often grown in the East intermixed with other crops. The primitive mode of obtaining the oil is to separate the seeds from the husks, and bruise them by tying them up in a grass mat. In this state they are put into a boiler amongst water, and boiled until all the oil is separated, which floats at the top, and the refuse sinks to the bottom; it is then skimmed off, and put away for use. The purest oil is obtained, as before-mentioned, by crushing the seeds (which are sewed up in horsehair bags), by the action of heavy iron beaters. The oil, as it oozes out, is caught in troughs, and conveyed to receivers, whence it is bottled for use.
Castor oil is used for lamps in the East Indies, and the Chinese have some mode of depriving it of its medicinal properties, so as to render it suitable for culinary purposes.
That which we import from the East Indies comes from Bombay and Calcutta, and is obtained at a very low price. It is exceedingly pure, both in color and taste.
In the West Indies the shrub grows about six feet high. The stalks are jointed, and the branches covered with leaves about eighteen inches in circumference, forming eight or ten sharp-pointed divisions, of a bluish green color, spreading out in different directions. The flowers contain yellow stamina; the seed is enclosed in a triangular husk, of a dark brown color, and covered with a light fur, of the same color as the husk. When the capsule is thoroughly ripened by the sun, it bursts, and expels the seeds, which are usually three in number.
In Jamaica this plant is of such speedy growth, that in one year it arrives at maturity, and I have known it to attain to the height of twenty feet. A gallon of the seed yields by expression about two pounds of oil.
The wholesale price in Liverpool, in October, 1853, was 3d. to 5d. per lb.
It is brought over from the East Indies in small tin cases, soldered together and packed in boxes, weighing about 2 cwt. each.
In Ceylon castor oil is obtained from two varieties of the plant, the white and the red.
The native mode of preparing the oil is by roasting the seed; this imparts an acridity to the oil, which is objectionable. By attending to the following directions, the oil may be prepared in the purest and best form. The modes of preparation are—1. By boiling in water. 2. By expression. 3. Extraction by alcohol. In the first the seeds are slightly roasted to coagulate the albumen, cleaned of the integuments, bruised in a mortar, and the paste boiled in pure water. The oil which rises on the surface is removed, and treated with an additional quantity of fresh water; 10,000 parts of clean seed give by this process (in Jamaica) 3,250 of oil, of good quality, though amber-colored. 2. Expression is the simplest and most usually adopted process; the cleaned kernels are well bruised, placed in cloth bags, and compressed in a powerful lever and screw press. A thick oil is obtained, which must be filtered through cloth and paper to separate the mucilage. In Bengal the manufacturers boil the oil water, which coagulates some albumen, and they subsequently filter through cloth, charcoal, and paper. 3. The extraction by alcohol is practised by some druggists. Each pound of paste is triturated with four pounds of alcohol, specific gravity 8.350, and the mixture subjected to pressure. The oil dissolved by the alcohol escapes very freely: one half is recovered by the distillation of the spirit, the residue of the distillation is boiled in a large quantity of water. The oil separates and is removed, and gently heated to expel any adherent moisture; then filtered at the temperature of 90 deg. Fahrenheit; 1,000 parts of the paste have by this process given 625 of colorless and exceedingly sweet oil.
The cultivation of the Palma christi, and the manufacture of castor oil, is extensively carried on in some parts of the United States, and continues on the increase. A single firm at St. Louis has worked up 18,500 bushels of beans in four months, producing 17,750 gallons of oil, and it is stated that 800 barrels have been sold, at 50 dollars per barrel. The oil may be prepared for burning, for machinery, soap, &c., and is also convertible into stearine. It is more soluble in alcohol than lard-oil.
American castor oil is imported for the most part from New York and New Orleans, but some comes from our own possessions in North America. In the United States, according to the “American Dispensatory,” the cleansed seeds are gently heated in a shallow iron reservoir, to render the oil liquid for easy expression, and then compressed in a powerful screw press, by which a whitish oily liquid is obtained, which is boiled with water in clean iron boilers, and the impurities skimmed off as they rise to the surface. The water dissolves the mucilage and starch, and the heat coagulates the albumen, which forms a whitish layer between the oil and water. The clear oil is now removed, and boiled with a minute portion of water until aqueous vapors cease to arise: by this process an acrid volatile matter is got rid of. The oil is put into barrels, and in this way is sent into the market. American oil has the reputation of being adulterated with olive oil. Good seeds yield about 25 per cent. of oil. A large proportion of the drug consumed in the eastern section of the Union is derived by way of New Orleans from Illinois and the neighbouring States, where it is so abundant that it is sometimes used for burning in lamps.
In Jamaica the bruised seeds are boiled with water in an iron pot, and the liquid kept constantly stirred. The oil which separates swims on the top, mixed with a white froth, and is skimmed off. The skimmings are heated in a small iron pot, and strained through a cloth. When cold it is put in jars or bottles for use.
| Castor oil imported. lbs. | Retained. lbs. | |
| 1826 | 263,382 | 453,072 |
| 1831 | 393,191 | 327,940 |
| 1836 | 981,585 | 809,559 |
| 1841 | 871,136 | 732,720 |
| 1846 | 1,477,168 | — |
| 1849 | 1,084,272 | — |
| 1850 | 3,495,632 | — |
The imports of castor oil come chiefly from the East India Company’s possessions, and were as follows, nearly all being retained for home consumption:—
| lbs. | |
| 1830 | 490,558 |
| 1831 | 343,373 |
| 1832 | 257,386 |
| 1833 | 316,779 |
| 1834 | 685,457 |
| 1835 | 1,107,115 |
| 1836 | 972,552 |
| 1837 | 957,164 |
| 1838 | 837,143 |
| 1839 | 916,370 |
| 1840 | 1,190,173 |
| 1841 | 869,947 |
| 1842 | 490,156 |
| 1843 | 717,696 |
In 1841, 12,406 Indian maunds of castor oil were shipped from Calcutta alone, and 7,906 ditto in 1842.
In 1842, 8 cases were shipped from Ceylon, 10 in 1843, 24 in 1844, and 14 in 1845.
1,439 barrels were shipped from New Orleans in 1847. The quantity brought down to that city from the interior was 1,394 barrels in 1848, and 1,337 barrels in 1849.
Within the last year or two, an attempt has been made to introduce the cake obtained in expressing the seeds of the castor oil plant as a manure, which is deserving attention, both because it is in itself likely to prove a serviceable addition to the list of fertilizers which may be advantageously employed, and because it may lead to the use of similar substances, which are at present neglected, or thrown aside as refuse.
The castor oil seed resembles in chemical composition the other oily seeds. It consists of a mixture of mucilaginous, albuminous, and oily matters; and the former two of these are identical in constitution and general properties with the substances found in linseed and rape cake, while the oil is principally distinguished by its purgative properties. The cake obtained is in the form of ordinary oil-cake, but is at once distinguished from it by its color, and by the large fragments of the husk of the seeds which it contains. It is also much, softer, and may be easily broken down with the hand. I have analysed two samples of castor cake, stated to have been obtained by different processes; and though I have not been informed of the exact nature of these processes, I infer, from the large quantity of oil, that one must have been cold-drawn. The first of the following analyses is that of the sample which I believe the cold-drawn. It is the most complete of the two, and contains a determination of the amount of oil. In the other analysis this was not done, but there was no doubt on my mind that its quantity was much smaller.
| No. 1. | No. 2. | |
| Water | 8.32 | 16.31 |
| Oil | 24.32 | — |
| Nitrogen | 3.05 | 3.35 |
| Ash | 7.22 | 4.95 |
| The ash contains— | ||
| Siliccous matters | 1.96 | — |
| Phosphates | 3.36 | 2.27 |
| Excess of phosphoric acid | 0.64 | — |
In order to give a proper idea of the value of this substance as a manure, I shall quote here, for comparison sake, the average composition of rape cake, as deduced from the analyses contained in the Transactions of the Highland Society of Scotland:—
| Water | 10.68 |
| Oil | 11.10 |
| Nitrogen | 4.63 |
| Ash | 7.79 |
| The ash contains— | |
| Siliccous matters | 1.18 |
| Phosphates | 3.87 |
| Excess of phosphoric acid | 0.39 |
It will be at once seen that there is a close general resemblance between these two substances, although there is no doubt that the castor cake is inferior to rape cake; still I believe that this inferiority is fully counterbalanced by the difference in price, which is such that, compared with rape cake, the castor cake is really a cheap manure. There is only one of its constituents which it contains in larger quantity, and that is the oil. No weight is, however, to be attached to the quantity of oil in a manure. In a substance to be used as food, it is of very high importance; but so far as we at present know, its value as manure is extremely problematical. Whale, seal, and other coarse oils have been used as manures, and by some few observers benefits have been derived from their application, but the general experience has not been favorable to their use, nor should we chemically be induced to expect any beneficial effect from them. We have every reason to believe that the oils which are found in plants are produced there as the results of certain processes which are proceeding within the plant, and there is no evidence to show that any part of it is ever absorbed in the state of oil by the roots when they are presented to them. On the other hand, the oils are extremely inert substances, and undergo chemical changes very slowly; so that there is no likelihood of their being converted into carbonic acid, or any other substance which may be useful to the plant; and as they contain no nitrogen, and consist only of carbon, hydrogen, and oxygen, they can yield only those elements of which the plant can easily obtain an unlimited supply. I can conceive cases in which the oil might possibly produce some mechanical effect on the soil, but none in which it could act as a manure, in the proper sense of the term.
KANARI on.—Mr. Crawfurd, in his “History of the Indian Archipelago,” speaks most favorably of an oil obtained from the “Kanari,” a tree which, he says, is a native of the same country as the sago palm, and is not found to the westward, though it has been introduced to Celebes and Java. I have not been able to distinguish its botanical name; but Mr. Crawfurd describes it as a large handsome tree, and one of the most useful productions of the Archipelago. It bears a nut of an oblong shape, nearly the size of a walnut, the kernel of which is as delicate as that of a filbert, and abounds with oil. The nuts are either smoked and dried for use, or the oil is expressed from them in their recent state. It is used for all culinary purposes, and is purer and more palatable than that of the coco-nut. The kernels, mixed up with a little sago meal, are made into cakes and eaten as bread.
THE COCO-NUT PALM.
This palm (Cocos nucifera) is one of the most useful of the extensive family to which it belongs, supplying food, clothing, materials for houses, utensils of various kinds, rope and oil; and some of its products, particularly the two last, form important articles of commerce. An old writer, in a curious discourse on palm trees, read before the Royal Society, in 1688, says, “The coco nut palm is alone sufficient to build, rig, and freight a ship with bread, wine, water, oil, vinegar, sugar, and other commodities. I have sailed (he adds) in vessels where the bottom and the whole cargo hath been from the munificence of this palm tree. I will take upon me to make good what I have asserted.” And then he proceeds to describe and enumerate each product. Another recent popular writer speaks in eloquent terms of the estimation in which it is held, and the various uses to which it is applied.
“Its very aspect is imposing. Asserting its supremacy by an erect and lofty bearing, it may be said to compare with other trees, as man with inferior creatures. The blessings it confers are incalculable. Year after year the islander reposes beneath its shade, both eating and drinking of its fruit; he thatches his hut with its boughs, and weaves them into baskets to carry his food; he cools himself with a fan plaited from the young leaflets, and shields his head from the sun by a bonnet of the leaves; sometimes he clothes himself with the cloth-like substance which wraps round the base of the stalks, whose elastic rods, strung with filberts, are used as a taper. The larger nuts, thinned and polished, furnish him with a beautiful goblet; the smaller ones with bowls for his pipes; the dry husks kindle his fires; their fibres are twisted into fishing-lines and cords for his canoes. He heals his wounds with a balsam compounded from the juice of the nut; and with the oil extracted from its pulp embalms the bodies of the dead. The noble trunk itself is far from being valueless. Sawn into posts, it upholds the islander’s dwelling; converted into charcoal, it cooks his food; and, supported on blocks of stones, rails in his lands. He impels his canoe through the water with a paddle of the wood, and goes to battle with clubs and spears of the same hard material. In Pagan Tahiti, a coco-nut branch was the symbol of regal authority. Laid upon the sacrifice in the temple, it made the offering sacred; and with it the priests chastised and put to flight the evil spirits which assailed them. The supreme majesty of Oro, the great god of their mythology, was declared in the coco-nut log from which his image was rudely carved. Upon one of the Tonga Islands there stands a living tree, revered itself as a deity. Even upon the Sandwich Islands the coco palm retains all its ancient reputation; the people there having thought of adopting it as the national emblem.”
Besides the foregoing and following uses, I am aware of several scents and spirituous liquors being procured from the flowers and pulp of the coco-nut.
This palm tree is one of the finest objects in nature. Its stem is tall and slender, without a branch; and at the top are seen from ten to two hundred coco-nuts, each as large as a man’s head: over these are the graceful plumes, with their green gloss, and beautiful fronds of the nodding leaves. Nothing can exceed the graceful majesty of these intertropical fruit trees, except the various useful purposes to which the tree, the leaf, and the nut are applied by the natives.
1. The stem is used for—Bridges, posts, beams, rafters, paling, ramparts, loop-holes, walking sticks, water butts, bags (the upper cuticle), sieves in use for arrowroot.
2. The coco-nut is used for—milk, a delicious drink; meat from the scraped nut, for various kinds of food; jelly, kora, pulp, nut, oil, excellent and various food for man, beast, and fowl.
The shell for vessels to drink out of, water pitchers, lamps, funnels, fuel, panga (for a game).
The fibre for sinnet, various cordage, bed stuffing, thread for tying combs, scrubbing-brushes, girdle (ornamental), whisk for flies, medicines, various and useful.
3. The leaf is used for—Thatch for houses, lining for houses, takapau (mats), baskets (fancy and plain), fans, palalafa (for sham fights), combs (very various), bedding (white fibre), tafi (brooms), Kubatse (used in printing), mama (candles), screen for bedroom, waiter’s tray.
Here are no less than forty-three uses of which we know something; and the natives know of others to which they can apply this single instance of the bounty of the God of nature. For house and clothes, for food and medicine, the coco-nut palm is their sheet anchor, as well as their ornament and amusement, who dwell in the torrid zone.
This fine palm, which always forms a prominent feature in tropical scenery, is a native of Southern Asia. It is spread by cultivation through almost all the intertropical regions of the Old and New Worlds; but it is cultivated nowhere so abundantly as in the Island of Ceylon, and those of Sumatra, Java, &c. On the shores of the Red Sea it advances to Mokha, according to Niebuhr; but it does not succeed in Egypt. It is cultivated in the lower and southern portions of the Asiatic Continent, as on the coasts of Coromandel and Malabar, and around Calcutta. In the island of Ceylon, where the fruit of this tree forms one of the principal aliments of the natives, the nuts are produced in such quantities that in one year about three millions were exported, besides the manufactured produce in oil, &c. According to Marshall it requires a mean temperature of 72 deg. Its northern limit, therefore, is nearly the same as the southern limit of our cereals.
Rumphius enumerates thirteen varieties of this palm, but many of these have now been placed under other genera, and Lindley resolves them into three species—C. nucifera, the most generally diffused species, a native of the East Indies; and C. flexuosa and plumosa, natives of Brazil. The trunk, which is supported by numerous, small fibrous roots, rises gracefully, with a slight inclination, from forty to sixty feet in height; it is cylindrical, of middling size, marked from the root upwards with unequal circles or rings, and is crowned by a graceful head of large leaves. The terminal bud of this palm, as well as that of the cabbage palm (Euterpe montana), is used as a culinary vegetable. The wood of the tree is known by the name of porcupine wood. It is light and spongy, and, therefore, cannot be advantageously employed in the construction of ships or solid edifices, though it is used in building huts; vessels made of it are fragile and of little duration. Its fruit, at different seasons, is in much request; when young, it is filled with a clear, somewhat sweet, and cooling fluid, which is equally refreshing to the native and the traveller. When the nut becomes old, or attains its full maturity, the fluid disappears, and the hollow is filled by a sort of almond, which is the germinating organ. This pulp or kernel, when cut in pieces and dried in the sun, is called copperah, and is eaten by the Malays, Coolies, and other natives, and from it a valuable species of oil is expressed, which is in great demand for a variety of purposes. The refuse oil cake is called Poonae, and forms an excellent manure.
A calcareous concretion is sometimes found in the centre of the nut, to which peculiar virtues have been attributed.
Along the Gulf of Cariaco there are many large coco walks. In moist and fertile ground it begins to bear abundantly the fourth year; but in dry soils it does not produce fruit until the tenth. Its duration does not generally exceed 80 or 100 years, at which period its mean height is about 80 feet. Throughout this coast a coco tree supplies annually about 100 nuts, which yield eight flascos of oil. The flasco is sold for about 1s. 4d. A great quantity is made at Cumana, and Humboldt frequently witnessed the arrival there of canoes containing 3,000 nuts.
Throughout the South Sea Islands, coco-nut palms abound, and oil may be obtained in various places. Some of the uninhabited islands are covered with dense groves, and the ungathered nuts, which have fallen year after year, lie upon the ground in incredible quantities. Two or three men, provided with the necessary apparatus for pressing out the oil, will, in the course of a week or two, obtain enough to load one of the large sea canoes. Coco nut oil is now manufactured in different parts of the South Seas, and forms no small part of the traffic carried on with trading vessels. A considerable quantity is annually exported from the Society Islands to Sydney. They bottle it up in large bamboos, six or eight feet long, and these form part of the circulating medium of Tahiti. The natives use the bruised fronds of Polypodium crassifolium to perfume this oil. Evodia triphylla, a favorite evergreen plant with the natives of the Polynesian Islands, is also used for this purpose.
The most favorable situation for the growth of the coco palm is the ground near the sea-coast, and if the roots reach the mud or salt water, they thrive all the better for it. The coco-nut walks are the real estates of India, as the vineyards and olive groves are of Europe. I have seen these palms growing well in inland situations, remote from the sea, but always on plains, never upon hills or very exposed situations, where they do not arrive to maturity, wanting shelter, and being shaken too violently by the wind. The stems being tall and slight, and the whole weight of leaves and fruit at the head, they may not unaptly be compared to the mast of a ship with round top and topmast without shrouds to support it. Ashes and fish are good manures for it.
The coco-nut is essentially a maritime plant, and is always one of the first to make its appearance on coral and other new islands in tropical seas, the nut being floated to them, and rather benefiting than otherwise by its immersion in the salt water. Silex and soda are the two principal salts which the coco-nut abstracts from the soil, and hence, where these do not exist in great abundance, the tree does not thrive well. I do not know myself what is the practice in Ceylon, but in Brazil, Dr. Gardner tells me, salt is very generally applied to the coco-nut when planted. Far in the interior, he states, he has seen as much as half a bushel applied to a single tree, and that too when it cost about 2s. a pound, from the great distance it had to be brought. That the application, therefore, of salt, of seaweed, and saline mud, does more than supply soda, must be very evident, if we only recollect how difficult it is to dry any part of our dress that has been soaked in salt water, and what effect damp weather has on table salt, which, in a balance, has often been made use of as an hydrometer. Moisture is always attracted by salt, and the more sea mud and other such little matters that coco-nut planters can apply round the roots of their trees, there will most assuredly be the less occasion for watering them in the dry season. Sea weed contains but very little fibrous matter, being chiefly composed of mucilage and water; and the experiments of Sir J. Pringle and Mr. C. W. Johnson, prove that salt in small quantities assists the decomposition of both animal and vegetable substances. Decomposed poonac, or oil-cake, is one of the best manures that can be applied, as it returns to the soil the component parts of which it has beau deprived to form the fruit.
The primary direction of the planter’s industry will be to the establishment of a nursery of young plants. In Ceylon, for this purpose, the nuts are placed in squares of 400, covered with one inch of sand, or salt mud; are watered daily till the young shoots appear, and are planted out after the rains in September. Sand and salt mud are to be found on almost all the coasts where it would be desirable to plant nuts, and if they are put into the ground at the commencement of the rainy season, artificial watering will scarcely be necessary. Any period, when there are showers, would answer for transplanting them. I should say from the middle to the end of January would be best, when they are placed in the nursery in October and November; and in October when they are planted in June.
It is said that they should be allowed from 20 to 30 feet space apart, but I will calculate their return when planted 27 feet apart every way. This will give 58 coco-nut trees per acre. If manured, for the first two years, with seaweed and salt mud, and supplied with water in dry weather, there need be no loss, and the plants will thrive the better. The land must be kept clear of weeds till the plants are matured, in order to permit them abundance of air and light. In five years, when well cared for, the flower may be expected, but the plants will not be in full bearing before the seventh or eighth year. From 50 to 80 nuts are the annual crop of a tree; but I will calculate at the lowest rate. One hundred nuts will yield, when the oil is properly expressed, at least two gallons and a half. I shall not take into account the making of jaggery sugar and toddy, or spirit from the sap, as I do not consider that the manufacture would be remunerative; and it must be attended with much trouble, besides requiring a great deal of care and some skill.
Take the case now of a plantation of 100 acres in extent. This would give us 5,800 trees, which, at 50 nuts per tree, 290,000 nuts, at 2½ gallons of oil per hundred, would yield 7,250 gallons of oil, the value of which any person may calculate, but which, at the low rate of 3s. over charges, would furnish, as the gross plantation return in oil, a sum of £1,087 10s. sterling. If the cultivator, instead of making his produce into oil, were to sell it in its natural state, his gross return in the West Indies would be nearly £600 sterling, at the rate of ten dollars per thousand.
Either of these sums would be a handsome return from 100 acres of any land, requiring no cultivation or care whatever, after the fourth year, and yielding the same amount for upwards of half a century! But this is not all. An outlay of a few pounds will secure other advantages, and ought to enable the owner of a coco-nut plantation to turn his gross receipts for oil into nett profits. The coir made from the husk of the nut is calculated to realise nearly one-fourth of the proceeds of the oil, but if we put it down at one-fifth, we shall have, in addition to the value of the oil, £217 10s., thus making a total of £1,305 sterling. If we obtained 60 nuts from each tree, the return would be £1,566 sterling, and if 75, £1,957 8s. sterling; and this from 100 acres of sea side sand! But even this does not exhibit the whole return of this article of culture. Each nut may be calculated to give a quarter of a pound of poonac, or oil-cake, being the refuse after expression, fit for feeding all kinds of stock, which may be estimated as worth £10 per ton. We must, therefore, add on this account to our first calculation, the sum of say £325; to the second, £390; and to the third, £485. This would give, in round numbers, the entire returns of the 100 acres planted:—At 50 nuts per tree, £1,630; at 60 ditto, £1,957; at 75, ditto, £2,446.
These are striking results, and may appear exaggerated; but I will, to show how very moderate has been my calculation, give two returns, with which I have been favored from Ceylon. These, it will be seen, differ materially, but the latter I can rely on as a practical result, from a plantation in Jaffna, the peninsula of the northern portion of the island. After estimating the expense of establishing the plantation, the first writer sets down his return thus:—
“The produce, calculating 90 trees to an acre, and 75 nuts to a tree, sold at £2 per 1,000, would yield 675,000 nuts, worth £1,350; or if converted into oil, calculating 30 to give one gallon, it would produce 22,500 gallons, or about 90 tons from 100 acres.”
From Jaffna, the following is an abridged estimate of return of 100 acres in full bearing:—“At 27 feet apart, 58 trees per acre, 5,800 trees, at 60 nuts per tree, 3,480 nuts per acre, 100 acres, 348,000 nuts, at 40 nuts per imperial gallon, 8,700 gallons of oil, at 2s. per gallon, netted £8 14s. per acre. The poonac left will pay the expense of making the oil. If shipped to England, at the present time (close of 1848), the selling price there being 55s. per cwt., measuring 12 imperial gallons, say, 4s. 7d. per gallon, and the cost and charges of sending it home and selling it being 23s., it would leave 3s. per gallon, or £13 per acre.” This sum is nett proceeds.
It will be seen by the above, that I have been extremely moderate in my computation of the return which may be anticipated, for there is no doubt that planters can, in favorable localities, on the coasts of most of our colonies, cultivate this palm with as much success as attends its culture in Ceylon. By the first of the calculations I have cited from, that island, the gross return appears thus:—
| 22,500 gallons at 4s. 7d | £5,156 | 5 |
| Coir—one-fifth of value | 1,031 | 4 |
| Cake from 675,000 nuts, say ¼ lb. each, 75 tons at £10 | 750 | 0 |
| Total gross return from 100 acres | 6,937 | 9 |
According to the other calculation, the return will stand thus:—
| 8,700 gallons at 4s. 7d | £1,993 | 15 |
| Coir | 398 | 15 |
| Cake from 348,000 nuts, 34 tons | 340 | 0 |
| Total gross return from 100 acres | 2,732 | 10 |
It will be seen that in my calculation I have set down the return lower than it is rendered in the less favorable statement from Ceylon by a sum of upwards of £1,000 sterling. But even supposing one-half of the amount of the lower Ceylon estimate could be realised, we should have a return of £1,366 5s. sterling from 100 acres of sea side sand.
I now proceed to point out the very small outlay required to obtain these results. In places where the coco-nut would be grown, there is generally no heavy woodland requiring great labor with axe and fire, and consequently one able-bodied man should get through the felling and clearing away bush, on an acre of the land to be prepared for the plant, in a short period,—say, on an average, four days. I will calculate, that for wages and rations, each hand employed will cost sixteen dollars per month, an outside price. Let us then say that ten laborers shall be at work. They fell two acres and a half per diem. In one month there should be nearly 70 acres felled; but I will say that the 100 acres will occupy them two months in felling and stacking the wood. During this period our planter may be considered to have had the aid of two more hands, engaged in the preparation, planting out, and care of the nursery of young plants. Two more hands must also be occupied in the construction of tanks and sheds, except where there is a stream of fresh water. For grubbing up the roots, if not very large size, the assistance of about a dozen cattle would be required, a labor which would be performed by means of the common grubbing machine, an implement in the form of a claw. We will consider that all hands are occupied another month in this manner, and in removing and re-stacking the wood, and turning up the land. The planting out would require but little time and labor. At the end of three months then, one-half of the hands, besides those engaged in the nursery and tanks, might be discharged. We must make an allowance for provision for the fodder of the cattle. Six thousand nuts would be required.
Let us now see what are the planter’s expenses; making ample allowance on account of each item:—
| dollars. | |
| 6,000 picked nuts at 10 dollars per 1,000 | 60 |
| Hire and rations of 12 hands, at 16 dollars for 3 months | 676 |
| Two hands at nursery, for same period | 96 |
| Purchase of 12 cattle at 20 dollars | 240 |
| Foddering cattle one month | 32 |
| Hire of two extra hands, making tanks and sheds 3 months | 96 |
| Hire of 6 hands for 9 months | 864 |
| Tools (including plough) | 100 |
| Total | 2,064 |
About £415 sterling for expenses for the first year.
Where fencing is required, we must add for making about three miles of fence, say £30 sterling. Two carts would also have to be provided, which will cost, say £20 more. In all we may compute the first year’s expenditure at £460 sterling.
Second year’s expenditure: ploughing land, or hoeing it twice, watering plants, manuring, repairing fences, and supplying plants, say hire of eight men for six months, about £150 sterling. The same for the third.
Fourth year’s expenditure: hire of six hands for three months, cleaning land, and manuring plants, about £60 sterling, and the like, at the cultivator’s option, for the fifth year.
| SUMMARY OF EXPENSES. | ||
| £ | ||
| First year | 460 | |
| Second year | 150 | |
| Third year | 150 | |
| Fourth year | 60 | |
| Fifth year | 60 | |
| Total expenditure | 880 | |
| Add for buildings | 80 | |
And we have a grand total of £960 sterling expended; for what purpose? To secure a net income of at least £1,200 sterling per annum for at least 50 years!
In the first year’s expenses many items might be cut down, but I leave the calculation as one to be considered by a party with small capital, intending to establish a coco-nut plantation. I have allowed nothing for the cost of land, as it is impossible to compute that. In general it would cost next to the nothing mentioned. I have, by careful calculation, arrived at the conclusion that by combining the cultivation of provisions with the gradual but steadily progressive establishment of a coco-nut plantation, any man of energy and perseverance may, with the aid of but four hands, clear, fence, and plant, in a favorable locality, 50 acres of coco-nuts within the year, yet have a balance in his pocket at its close. Such a person would, ere doing anything beyond putting in his nursery plants, establish a provision ground, of considerable extent, for the purpose of supplying himself and his laborers with bread kind, and vegetables, and of enabling him, by the disposal of the surplus produce in the market, to raise a sufficient sum of money to furnish the wages and rations of the men. I need not enter into a calculation to show how this could be done, as every one must be aware of an easy method of following out so simple a suggestion. Of course he would have to bear in mind that the provision ground is of secondary importance, and limit his exertions in that line accordingly; devoting to the coco-nut plantation the strictest daily attention.
The cultivation of this tree deserves much more attention than has hitherto been paid to it, particularly in the East, where it not only forms part of the daily food of all classes of the community, but is an exportable article to neighbouring regions, the oil which it yields having of late years become in great demand in England, for the manufacture of composite candles and soap, and there is no doubt of its continually extended application to such purposes. Supposing, nevertheless, the result of an increased cultivation of the coco-nut should be such as to cause a fall in price, and sink the nett return in England to 2s. per gallon; this being clear profit, would make this kind of plantation a safe and sure investment for both capital and labor in the Colonies.
A kind of sugar made from the sap is called “jaggery,” and the sap when fermented forms an intoxicating beverage known as toddy. The fibrous outer covering, or husk of the nut, when macerated and prepared, is termed “coir,” and is spun into yarn and rope. It is extensively shipped from Ceylon, in coils of rope, bundles of yarn, and pieces of junk.
The coco-nut is usually planted as follows:—Selecting a suitable place, you drop into the ground a fully ripe nut, and leave it. In a few days a thin lance-like shoot forces itself through a minute hole in the shell, pierces the husk, and soon unfolds three pale green leaves in the air; while, originating in the same soft white sponge which now completely fills the nut, a pair of fibrous roots pushing away the stoppers which close two holes in an opposite direction, penetrate the shell, and strike vertically into the ground. A day or two more, and the shell and husk, which in the last and germinating stage of the nut are so hard that a knife will scarcely make any impression, spontaneously burst by some force within; and, henceforth, the hardy young plant thrives apace, and needing no culture, pruning, or attention of any sort, rapidly arrives at maturity. In four or five years it bears; in twice as many more it begins to lift its head among the groves, where, waxing strong, it flourishes for near a century. Thus, as some voyager has said, the man who but drops one of these nuts into the ground, may be said to confer a greater and more certain benefit upon himself and posterity, than many a life’s toil in less genial climes. The fruitfulness of the tree is remarkable. As long as it lives it bears, and without intermission. Two hundred nuts, besides innumerable white blossoms of others, may be seen upon it at one time; and though a whole year is required to bring any one of them to the germinating point, no two, perhaps, are at one time in precisely the same stage of growth.
Coco-nuts form a considerable article of export from many of the British colonies: 375,770 were exported from Honduras in 1844, and 254,000 in 1845; 105,107 were shipped from Demerara, in 1845; 3,500,000 from Ceylon in 1847.
They are very abundant on the Maldive Islands, Siam, and on several parts of the coast of Brazil. Humboldt states, that on the south shores of the Gulf of Cariaco, nothing is to be seen but plantations of coco-nut trees, some of them containing nine or ten thousand trees.
Ceylon is one of the localities where the greatest progress has been made in this species of culture.
In 1832 several Europeans settled at Batticaloa, expressly for the purpose of cultivating this palm to a large extent. They planted cotton bushes between the young trees, which were found to ripen well, and nurse and shade them.
There are now an immense number of coco-nut topes, or walks, on the coasts of the island, and about 20,000 acres of land are under cultivation with this tree.
The value of this product to Ceylon, may be estimated by the following return of its exports in 1847, besides the local consumption:—
| £ | |
| Declared value of nuts | 5,485 |
| Ditto of Coir | 10,318 |
| Kernels, or Copperah | 6,503 |
| Shells | 210 |
| Oil | 19,142 |
| Arrack | 11,657 |
| Total | £53,315 |
The annually increasing consumption of the nuts holds out a great inducement to the native proprietors to reclaim all their hitherto unproductive land. The fruit commands a high price in the island, (ranging from ¾d. to 3d. per nut), owing to the constant demand for it as an article of food, by both Singhalese and Malabars; there is not so much, therefore, now converted into copperah for oil making. In the maritime provinces of the island, it has been estimated that the quantity of nuts used in each family, say of five persons, amounts to 100 nuts per month, or 1,000 per annum. It needs only a reduction in the cost of transit, to extend the consumption in the interior of the island to an almost unlimited extent.
In 1842, Ceylon exported but 550 nuts, while in 1847 she shipped off to other quarters three millions and a half of nuts, valued at £5,500. The average value of the nuts exported may be set down at £7,000.
In Cochin China the cultivation of the coco-nut tree is much attended to, and they export a large quantity of oil. At Malacca and Pinang it shares attention with the more profitable spices. Since the palm has been acclimatised in Bourbon, about 20,000 kilogrammes of oil have been produced annually. About 8,000 piculs of oil are exported annually from Java.
A correspondent, under date December, 1849, has furnished me with the following particulars of coco-nut planting in Jaffna, the northern district of Ceylon, in which the culture has only recently been carried on; the facts and figures are interesting:—
The Karandhai estate, the property of the late Mr. J. Byles, was sold last month for £2,400, part of it bearing. It consisted of 303 acres, of which 228 are planted with coco nuts—about half the trees six years old.
The Victoria estate, in extent 170 acres, planted and part in bearing, and about seventy acres of jungle, was also sold for £1,500. Mr. G. Dalrymple was the purchaser of the latter, and Mr. Davidson of the former. Both lots were cheap. The properties are among the best in the district, the latter, especially, is a beautiful estate.
About two-thirds of the estates planted are looking well, and the remainder but indifferently, in fact, ought never to have been planted, and I believe will never give any return. About 7,000 acres are now under cultivation here, and clearing is still going on. Estates can now be put in for about one half what they cost formerly, viz., about £4 or £5 per acre, and can be kept in order, inclusive of all charges, for about 15s. to 20s. per acre for the first two years, and about half that afterwards. Estates, in some instances, have been put in for about £3 per acre.
Elephants have almost disappeared; now and then a stray one comes. Figs are still a great nuisance, but the greatest anxiety among planters is regarding beetles. You will be sorry to hear that the first year the trees showed fruit or flower, one-tenth of them were destroyed by the beetle; the insects still go on destroying, and hardly a tree attacked ever recovers.
This is a very serious evil, and upon which the fortunes of all those involved in coco-nut planting depend. The trees come into bearing but very slowly, and I consider no estate will give any return over its current expenses under twelve years. It takes twelve months from the formation of the flower, till the fruit ripens. On an estate, perhaps one of the oldest and best in this district, out of 120 acres, part seven and eight years old, about 12 per cent, are in flower or in bearing, and give a return of about twenty-four nuts per tree, on an average, yearly. On the next oldest, the return is not near so great. But few of the estates here will, I think, pay interest on the money laid out, and many will never pay anything over the expense of keeping them up, even after coming into bearing. I doubt if any estate in this district, however economically managed, will ever give a net return of more than £2, or perhaps of £2 10s. per acre, at least without there is a great increase in the consumption of oil in Europe. The consumption of this oil, in Europe, is under 5,000 tons. If the beetles do not destroy half the trees, the estates here when in bearing, if they yield anything, will give half that quantity; and it must be borne in mind that coco-nut oil is not a strong oil, like palm oil, and that soap boilers will never use it to any extent, for it will allow but little admixture of rosin, &c.; its use in Europe will be principally for candles and fancy soaps; but as by refining and compression they can now purify tallow, and make of it candles fully equal to those made from coco-nut oil, the consumption of the latter is not likely to increase. The consumption of candles is always limited on the continent of Europe, liquid oil being preferred, and in many instances gas is now being used where candles formerly were.
The return of land planted with coco-nut trees in Ceylon, in 1851, was 22,500 acres; but this refers only to regular estates recently opened and cultivated chiefly by Europeans. Let us suppose that the natives possess besides, twenty millions of trees; Butollac in his time estimated the number at thirteen millions. At 100 trees to the acre, twenty millions of trees give 100,000 acres, so that the total amount of land planted with coco-nut trees would be 122,500 acres.
An hydraulic press, for the manufacture of coco-nut oil, 1,200 horse power and weighing twenty-three tons, was cast at the Ceylon Iron Works, in 1850, by Messrs. Nelson and Son.
In the island of Singapore there are now many extensive plantations in a very flourishing condition, holding out favorable prospects to the proprietors. Hitherto the island has been supplied almost wholly from abroad with nuts and oil for its consumption, which will, before long, be obtained exclusively from its own soil. In 1846 there were 10,000 coco-nut trees in bearing in Singapore.
I have omitted to notice, in the foregoing observations, a very mistaken notion which prevails in many quarters, that it is best to let the trees drop their fruit, and not to pick the nuts when ripe. Nature directs differently. As soon as the husk of the nut is more brown than green it should be picked. It then makes better oil and better coir, than when left to shrivel up and fall from the tree.
Colonel Low, in his “Dissertation on Pinang,” gives some interesting details and statistics on coco-nut planting:—
On a rough estimate—for an actual enumeration has not been lately taken—the total number of bearing trees in Pinang may be stated at 50,000, and those in Province Wellesley at 20,000; but very large accessions to these numbers have of late years been made. The tree is partial to a sandy soil in the vicinity of the sea, and Province Wellesley offers, therefore, greater facilities, perhaps, for its cultivation than Pinang does, as its line of clear beach is longer, and has many narrow slips of light or sandy land lying betwixt the alluvial flats inland. There are several kinds of this tree known here; one has a yellowish color, observable both on the branches and unripe fruit; its branches do not droop much. A second has green spreading branches, more drooping than the former, the fruit being green colored until ripe; this is, perhaps, the most prolific; it also bears the soonest, if we except the dwarf coco-nut, which fruits at the second or third year, before the stem has got above one foot high. This last kind was brought from Malacca; it attains in time to the height of the common sort. Its fruit is small and round, and of course less valuable than the other sorts. There is also a coco-nut so saturated with green, that the oil expressed from its kernel partakes of that color.
It is a mistaken supposition that the coco-nut tree will flourish without care being taken of it. The idea has been induced by the luxuriant state of trees in close proximity to houses and villages, and in small cove’s where its roots are washed by the sea. In such circumstances, a tree, from being kept clear about the roots, from being shaded, and from occasional stimuli, advances rapidly to perfection; but in an extended plantation, a regular and not inexpensive system of culture must be followed to ensure success.
The nuts being selected, when perfectly ripe, from middle-aged trees of the best sorts, are to be laid on the ground under shades, and after the roots and middle shoots, with two branches, have appeared, the sooner they are planted the better. Out of 100 nuts, only two-thirds, on an average, will be found to vegetate. The plants are then to be set out at intervals of thirty or forty feet—the latter if ground can be spared—and the depth will be regulated by the nature of the soil, and the nut must not be covered with earth. The plants require, in exposed situations, to be shaded for one and even two years, and no lalang grass must be permitted to encroach on their roots. A nursery must be always held in readiness to supply the numerous vacancies which will occur from deaths and accidents. The following may be considered the average cost of a plantation, until it comes into bearing:—
| FIRST COST—100 ORLONGS OF LAND. | |
| Spanish dollars. | |
| Purchase money of land, ready for planting | 1,000 |
| 7,000 nuts at 1½ dollars, per 100 | 105 |
| Houses of coolies, carts, buffaloes, &c., &c. | 100 |
| Spanish dollars | 1,205 |
| YEARLY COST OF SEVEN YEARS. | |
| First year, 10 laborers at 3 dollars per month, including carts, &c. | 360 |
| Wear and tear of buildings, carts, and implements | 50 |
| Overseer, at 7 dollars per month | 84 |
| Quit rent, average | 50 |
| Nursery and contingencies | 50 |
| Total per annum | 594 |
| Seven years at the rate will be | 4,158 |
| Total, Spanish dollars | 4,752 |
To this sum interest will have to be added, making, perhaps, a sum total of 6,000 Spanish dollars, and this estimate will make each tree, up to its coming into bearing, cost one Spanish dollar at the lowest. The young tree requires manure, such as putrid fish and stimulating compounds, containing a portion of salt. On the Coromandel coast, the natives put a handful of salt below each nut on planting it.
The cultivators of Kiddah adopt a very slovenly expedient for collecting the fruit. Instead of climbing the tree in the manner practised by the natives on the Coromandel coast, by help of a hoop passing round the tree and the body of the climber—and a ligature so connecting the feet as will enable him to clasp the tree with them—the Malays cut deep notches or steps in the trunk, in a zig-zag manner, sufficient to support the toes or the side of the foot, and thus ascend with the extra, aid only of their arms. This mode is also a dangerous one, as a false step, when near the top of a high tree, generally precipitates the climber to the ground. This notching cannot prove otherwise than injurious to the tree. But the besetting sin of the planter of coco-nuts, and other productive trees, is that of crowding. Coco-nut trees, whose roots occupy, when full grown, circles of forty to fifty feet in diameter, may often be found planted within eight or ten feet of each other; and in the native campongs all sorts of indigenous fruit trees are jumbled together, with so little space to spread in, that they mostly assume the aspect of forest trees, and yield but sparing crops.
The common kinds of the coco-nut, under very favorable circumstances, begin to bear at six years of age; but little produce can be expected until the middle or end of the seventh year. The yearly produce, one tree with another, may be averaged at 80 nuts the tree; where the plantation is a flourishing one—assuming the number of trees, in one hundred orlongs, to be 5,000—the annual produce will be 400,000 nuts, the minimum local market value of which will be 4,000 Spanish dollars, and the maximum 8,000 dollars. From either of these sums 6 per cent. must be deducted for the cost of collecting, and carriage, &c. The quantity of oil which can be manufactured from the above number of nuts will be, as nearly as possible, 834 piculs of 133⅓ lbs.
| The average price of this quantity, at 7 dollars per picul | 5,838 |
| Deduct cost of manufacturing, averaged at one-fourth, and collecting, watching, &c. | 2,059 |
| Profit, Spanish dollars | 3,779 |
The Chinese, who are the principal manufacturers of the oil, readily give a picul of it in exchange for 710 ripe nuts, being about 563 piculs of oil out of the total produce of the plantation of 100 orlongs. The price of coco-nut oil has been so high in the London market as £35 per tun, or about an average of ten dollars per picul. It is said that English casks have not been found tight enough for the conveyance of this oil to Europe, but if the article is really in great demand, a method will no doubt be discovered to obviate this inconvenience.
So long, however, as the cultivator can obtain a dollar and a half, or even one dollar for 100 nuts, he will not find it profitable to make oil, unless its price greatly rises.
Soap is manufactured at Pondicherry from this oil, but it is not seemingly in repute; the attempt has not been made in Pinang with a view to a market.
There is scarcely any coir rope manufactured at this island, so that the profit which might (were labor cheaper) arise from this application of the coco-nut fibre, is lost. The shell makes good charcoal; the leaves are scarcely put to any purpose, the nipah or attap being a superior material for thatching.
The coco-nut tree is extremely apt to be struck by lightning, and in such cases it is generally destroyed. It is a dangerous tree, therefore, to have close to a house. If the trees are widely planted, coffee may be cultivated under their shade. It is generally believed that the extracting of toddy from this tree hastens its decline. The Nicobar and Lancavi Islands used partly to supply the Pinang market with this indispensable article; but their depopulation has greatly reduced the quantity.
On the whole it may be said that there is no cultivation which insures the return of produce with so much certainty as that of the coco-nut tree; and as Rangoon, the Tenasserim coast, and Singapore will, probably, always remain good markets for the raw nut, there appears to be every chance of the value of the produce affording ample remuneration to the planter.
Coco-nut beetle.—The chief natural enemy of this tree is a destructive species of elephant-beetle (Oryctes Rhinoceros), which begins by nibbling the leaves into the shape of a fan; it then perforates the central pithy fibre, so that the leaf snaps off; and lastly, it descends into the folds of the upper shoot, where it bores itself a nest, and if not speedily extracted or killed, will soon destroy the tree. At Singapore, on account of the depredations of this beetle, the difficulties have been considerable.
In Pinang and Province Wellesley it has only been observed within the last two years, and it is believed to have come from Keddah. A similar kind of beetle is, however, found on the Coromandel coast. The natives of Keddah say that this insect appears at intervals of two, three, or more years.
Its larvæ, which are also very formidable insects or grubs, about three inches long, with large reddish heads, are found in decaying vegetable matter. It is when the tree has made considerable progress, however, that the parent insect does most mischief. When they are from one to two years old, throwing out their graceful branches in quick succession with the greatest vigor, and promising in three or four years more to yield their ruddy fruit, this destructive enemy begins to exercise his boring propensities; and, making his horn act as an auger, he soon penetrates the soft and yielding fibre of the young tree, and if not discovered in time, destroys the leading shoot or branch. The only remedy which has been adopted in Ceylon, is the following:—Several intelligent boys are provided each with an iron needle or probe, of about a foot long, with a sharp double barbed point, like a fish-hook, and a ring handle; they go through the plantation looking narrowly about the trees, and when they perceive the hole in the trunk, which indicates that the enemy is at work, they thrust in the barbed instrument and pull him out. Sometimes he may only have just commenced, when his capture is more easily effected, but even should he have penetrated to the very heart of the tree, the deadly needle does not fail in its errand, but brings the culprit out, impaled and writhing on its point. This is the only known way of checking the ravages of this beetle, except destroying its larvæ. Some cultivators, however, think pouring salt water or brine on the top of the tree, so as to descend among the folds of the upper shoots, a good plan to get rid of the larvæ.
Nearly two million coco-nuts are shipped annually from Bahia.
From Ceylon, 114,600 coco-nuts were shipped in 1851, and 70,185 in 1852.
Coco-nut oil; 98,159 gallons were shipped from Ceylon in 1852; 359,233 gallons in 1851.
The prices of Ceylon oil have ranged from £31 to £33 10s. per tun; of Cochin oil, £34 to £35, within the last two years. The price per leaguer in Colombo, without casks, has been £8 10s. to £9.
Copperah is the name, given by the natives to the kernel of the ripe nut after it has been exposed to the sun on mats, until it has become rancid and dissolved. It has recently been shipped to England in this state for the purpose of converting into oil. The exports of copperah from Ceylon were, in 1842, 115 cwts.; in 1843, 2,194; in 1844, 2,397; and in 1852, 39,174 cwts.
The returned value of the copperah or kernels exported from Ceylon, as entered in the Custom House books, is—
| 1840 | 2,508 |
| 1841 | 1,460 |
| 1842 | 3,022 |
| 1843 | 5,795 |
| 1844 | 6,194 |
| 1845 | 3,282 |
| 1846 | 5,517 |
| 1847 | 6,503 |
| 1848 | 12,639 |
| 1849 | 7,819 |
| 1850 | 4,166 |
| 1851 | 9,678 |
| 1852 | 13,325 |
632 cwts. of poonac (being the refuse or cake, after expressing the oil) were exported from Ceylon in 1842. It is worth there about £10 the ton.
The oil from the nut is obtained for culinary purposes by boiling the fresh pulp, and skimming it as it rises. That for exportation is usually obtained by pressing the copperah in a simple press turned by bullocks. Recently, however, steam power has been applied in Colombo, with great advantage. About 2½ gallons of oil per 100 nuts, are usually obtained. It is requisite that care should be taken not to apply too great and sudden a pressure at once, but by degrees an increasing force, so as not to choke the conducting channels of the oil in the press.
In many of the colonies the oil is expressed by the slow and laborious hand process of grating the pulp.
The quantity shipped from Ceylon was 2,250 tuns, in 1842; 3,985 in 1843; 2,331 in 1844; 1,797 in 1845. The quantity in gallons shipped since, was 101,553 in 1846; 197,850 in 1847; 300,146 in 1848; 867,326 in 1849; 407,960 in 1850; 442,700 in 1851; and 749,028 in 1852.
The duty on importation is of and from British possessions, 7d. and ⅞ths. per cwt.; if the produce of foreign possessions, 1s. 3¾ d, per cwt. In the close of 1852, the price of coco-nut oil in the London market was, for Ceylon, £32, £33, to £33 10s. per ton; Cochin, middling to fine, £34 to £35.
The following return shows the Custom House valuation of the oil shipped from Ceylon for a series of years, and which is of course much below its real value:—
| 1839 | £26,597 |
| 1840 | 32,483 |
| 1841 | 24,052 |
| 1842 | 34,242 |
| 1843 | 43,874 |
| 1844 | 24,067 |
| 1845 | 15,945 |
| 1846 | 7,939 |
| 1847 | 19,142 |
| 1848 | 24,839 |
| 1849 | 34,831 |
| 1850 | 35,035 |
| 1851 | 31,444 |
| 1852 | 58,045 |
Among the coco-nut oil exported from Ceylon, in 1849, there were 47,427½ gallons, valued at £3,595, the whole of which, I believe, was Cochin oil; the raw material of this kind not being, like the copperah generally in Ceylon, subjected to the action of fire, the product is finer, and fetches a better price in the London market.
Amongst the imports from British possessions in Asia, were 2,600 cwts., of copperah (dried coco-nut kernels, from which oil is expressed), valued at £1,100; amongst the imports re-exported to Great Britain, we find 870 cwts. of the same article, valued at £300. Of the oil exported a quantity of 11,000 gallons was shipped for the United States. About 600,000 piculs of coco-nut oil are annually exported from Siam.
A large quantity of oil is made in Trinidad, chiefly on the east coast, where, in one locality, there is an uninterrupted belt of coco-nut palms fourteen miles in extent. They usually bear when five years old.
The cultivation of the coco-nut in a proper soil presents a very profitable speculation for small capitalists. Whether sold at the rate of a dollar per hundred in their natural state, to captains of ships, who freely purchase them, or manufactured into oil, they are a very remunerative product. Each tree in the West Indies is calculated to produce nuts to the value of one dollar yearly. There is one thing to which we would draw the attention of chemists and other scientific men.
For twenty-four or even forty-eight hours after its manufacture this oil is as free from any unpleasant taste as olive oil, and can be used in lieu of it for all culinary purposes, but after that time it acquires such a rancid taste as to be wholly unpalateable. If any means could be discovered of preventing this deterioration in quality, and preserving it fresh and sweet, it could compete with olive oil, and the price and consumption would be largely raised.
Coco-Nut Oil Imported Into the United Kingdom
| Imports. cwts. | Retained for home consumption. cwts. | |
| 1835 | 19,838 | 14,015 |
| 1836 | 26,058 | 26,062 |
| 1837 | 41,218 | 28,641 |
| 1838 | — | 38,669 |
| 1839 | — | 15,153 |
| 1840 | — | 37,269 |
| 1841 | — | 26,528 |
| 1842 | — | 26,225 |
| 1843 | — | 29,928 |
| 1844 | — | 42,480 |
| 1848 | 85,453 | 54,783 |
| 1849 | 64,451 | 14,622 |
| 1850 | 98,040 | 46,494 |
| 1851 | 55,995 | 2,333 |
| 1852 | 101,863 | 27,112 |
A London coco-nut oil soap was found, on analysis by Dr. Ure, to consist of:—
| Soda | 4.5 |
| Coco-nut lard | 22.0 |
| Water | 73.5 |
| 100.0 |
This remarkable soap was sufficiently solid; but it dissolved in hot water with extreme facility. It is called marine soap, because it washes linen with sea water.
Of the six principal vegetable oils, namely—palm, coco-nut castor, olive, linseed, and rape, the first four are imported in the state of oil only; the two last chiefly as seed. The proportion in which they were imported is shown in the following tables; and if to these quantities are added about a million and a half cwt. of tallow, and nearly twenty thousand tuns of whale oil and spermaceti, they will nearly represent the total quantity of oil imported into Great Britain.
| IMPORTS IN 1846. | |||
| Palm oil. cwts. | Olive oil. cwts. | Castor oil. cwts. | |
| Western Africa | 475,364 | 1 | — |
| United States | 13,349 | — | 290 |
| Naples and Sicily | 14 | 9,661 | — |
| East Indies | — | — | 6,315 |
| Canary Islands | 3,719 | — | — |
| Malta | — | 2,237 | — |
| Turkish Empire | — | 1,712 | — |
| Tuscany | — | 832 | — |
| Spain | — | 753 | — |
| Brazil | 525 | — | — |
| Ionian Islands | — | 506 | — |
| Morocco | — | 368 | — |
| Madeira | 353 | — | — |
| Sardinia | — | 333 | 11 |
| Miscellaneous | 7 | 471 | 65 |
| Total | 493,331 | 16,864 | 9,681 |
| IMPORTS IN 1850 | |||
| Linseed. quarters. | Rape seed. quarters. | ||
| Russia | 482,813 | 3,235 | |
| Sweden | 870 | — | |
| Norway | 268 | — | |
| Denmark | 37 | 3,092 | |
| Russia | 87,273 | 645 | |
| Hanse Towns | 1,153 | 2,872 | |
| Holland | 7,734 | 201 | |
| Naples | 1,476 | — | |
| Austrian Territories | 40 | 2,580 | |
| Greece | — | 1,637 | |
| Wallachia and Moldavia | 910 | 1,280 | |
| Egypt | 17,517 | — | |
| East Indian Empire | 26,142 | 13,126 | |
| Miscellaneous | 262 | 922 | |
| Total | 626,495 | 29,495 | |
OIL-CAKE.—It has been observed by Evelyn that one bushel of walnuts will yield fifteen pounds of peeled kernels, and these will produce half that weight of oil, which the sooner it is drawn is the more in quantity, though the drier the nut the better its quality. The cake or marc of the pressing is excellent for fattening hogs and for manure.
Oats contain, as a maximum, about seven per cent. of oil, and Indian corn nine per cent. The cake of the gold of pleasure contains twelve per cent. Indeed the most valuable oil-cakes are those of the Camelina sativa, poppies and walnuts, which are nearly equal; next to these are the cakes of hemp, cotton, and beech-mast. In France the extraction and purification of oil from the cotton seed is a recent branch of labor, the refuse of which is likely to prove useful in agriculture; its value as a manure being nearly ten times greater than that of common dung. Oil is obtained from maize or Indian corn in the process of making whiskey. It rises in the mash tubs and is found in the scum at the surface, being separated either by the fermentation or the action of heat. It is then skimmed off, and put away in a cask to deposit its impurities; after which it is drawn off in a pure state, fit for immediate use. The oil is limpid, has a slight tinge of the yellow color of the corn, and is inoffensive to the taste and smell. It is not a drying oil, and therefore cannot be used for paint, but burns freely in lamps and is useful for oiling machinery.
Among the various seeds used in the manufacture of oil-cake, flour of linseed is the most important. Rape seed is also employed, but is considered heating. In Lubeck, a marc, called dodder cake, is made from the Camelina sativa. Inferior oil-cake is made from the poppy in India. Cotton-seed cake has lately been recommended on account of its cheapness, being usually thrown away as refuse by the cotton manufacturers. It is extensively used as a cattle food, in an unprepared state, in various parts of the tropical world, and to a limited extent in this country.
The cost of seed, freight included, was 2d. per lb. from Charlestown to Port Glasgow. Cotton oil-cake is now ordered at the same price as linseed cake. The produce of oil-cake and oil from cotton seed, is two gallons of oil to one cwt. of seed, leaving about 96 lbs of cake; 8 lbs. is the daily allowance for cattle in England.
Cotton seed oil, very pure, is manufactured to a considerable extent at Marseilles, by De Gimezney, from Egyptian seed; and he received a prize medal at the Great Exhibition.
Account of the export of linseed and rapeseed cakes from Stettin, principally to England, in—
| cwts. | |
| 1834 | 33,518 |
| 1835 | 27,038 |
| 1836 | 56,581 |
| 1837 | 70,643 |
| 1838 | 119,540 |
| 1839 | 115,416 |
| 1840 | 162,457 |
| 1841 | 143,816 |
| 1842 | 119,814 |
The quantity of oil-seed cakes imported into the United Kingdom was in—
| tons. | |
| 1849 | 59,462 |
| 1850 | 65,055 |
| 1851 | 55,076 |
| 1852 | 53,616 |
Cargoes of oil-cake, to the value of £22,207, were exported from the port of Shanghae, in China, in 1849.
2,467 tons of oil-cake were brought down to New Orleans from the interior in 1848, and 1,032 tons in 1849.
Seven samples of American oil-cake gave the following results:—
| Oil | 11.41 |
| Water | 7.60 |
| Nitrogen | 4.74 |
| Ash | 6.35 |
From the above figures, the scientific farmer will see that the manure formed by 100 lbs. of oil-cake is more than that derived from 300 lbs. of Indian corn. 300 lbs. of corn contain about l¼ lbs. phosphoric acid; 100 lbs. oil-cake contain about 2½ lbs.
VOLATILE OR ESSENTIAL OILS occur in the stems, leaves, flowers and fruit of many odoriferous plants, and are procured by distillation along with water. They are called “essences,” and contain the concentrated odor of the plant. They usually exist ready-formed, but occasionally they are obtained by a kind of fermentation, as oil of bitter almonds and oil of mustard. Some of them consist of carbon and hydrogen only, as oil of turpentine, from Juniperus communis; oil of savin, from Juniperus Sabina; oil of lemons and oranges, from the rind of the fruit; and oil of nerole, from orange flowers. A second set contain oxygen in addition, as oil of cinnamon, from Cinnamonum verum; otto or attar of roses, from various species of rose, especially Rosa centifolia; oil of cloves, from Caryophyllus aromaticus.
Those principally obtained from tropical shrubs and plants are citronella, oil of oranges and lemons, from the rind of the fruit oil of cinnamon and cloves, croton oil, &c.
The oil of Sandal or Sanders wood (Santalum album), grown on the Malabar coast, is much esteemed as a perfume. Keora oil, from Pandanus odoratissimus, in Bengal. Oil of spikenard, so highly prized, on account of its perfume, by the ancients, may be procured in Sagur, Nepaul, and the mountains of the Himalaya.
956 lbs. of essential oils were imported into Hull in 1850. There were exported from Ceylon in 1842, 902 cases; in 1843, 138; in 1844, 20; in 1845, 25 cases of essential oils, and in the last two years as follows:—
| 1852. cases. | 1851. cases. | |
| Cinnamon oil | 17 | 23 |
| Citronella oil | 110 | 87 |
| Essential oil | 72 | 35 |
Of chemical, essential, and perfumed oils imported from France, the quantity is about 35,000 lbs. annually, worth £10,000. The duty is 1s. per lb. We also imported from France, in 1851, 9,596 cwt. of oil or spirit of turpentine, worth £14,197, on which a duty of 5s. 3d. per cwt. is levied.
From Western Australia some distilled oil of the Liptospermum was shown at the Exhibition, which it is stated may be obtained in any quantity, and a similar oil produced, by distillation, from the Eucalyptus piperita, a powerful solvent of caoutchouc, evidently very similar, if not altogether identical, with the oil of cajeput. The characters of these two oils are much alike and without some care it is difficult to distinguish them from one another by the odor; the liptospermum oil has a slight tinge of yellow, its specific gravity is 0.9035; the eucalyptus oil is colorless, and has a density of 0.9145. It is probable that these oils might be used with great advantage in the manufacture of varnish, they readily dissolve copal, and when its solution is spread over any surface the oil soon evaporates, and leaves a hard, brilliant and uniform coating of the resin. These oils, according to Prof. Solly, are specially worthy of attention.
Dr. Bennett, in his “Wanderings in New South Wales,” states that a large quantity of camphorated oil, which closely resembles the cajeputi, is produced from the foliage of several species of Eucalyptus. Some of the leaves, which are of a bluish green, contain it in such abundance as to cover the hand with oil when one of the leaves is gently rubbed against it.
From the odorous leaves of the Arbor alba is extracted a portion of the aromatic cajeput oil. This celebrated medicinal oil is principally made in the island of Borneo, one of the Moluccas.
The leaf of the Melaleuca minor yields, by distillation, the volatile oil of cajeputi, well known as a powerful sudorific, and a useful external application in chronic rheumatism. It is an evergreen shrub, with white flowers like a myrtle, native of the East Indies, principally flourishing on the sea coasts of the Moluccas and other Indian islands. Two sacks full of the leaves yield scarcely three drachms of the oil, which is limpid, pellucid, and of a green color.
Oil of cinnamon and oil of cassia, according to Mulder, have the same composition. When fresh they are pale yellow, but become brown on exposure to the air. On exposure they rapidly absorb cinnamic acid, two resins and water.
More than 22,000 lbs. of essence of bergamot was imported in 1848. It is obtained by distillation or pressure from the rind of the fragrant citron.
Andropogon calamus aromaticus, of Royle, A. nardoides, of Nees v. Esenb., according to some yields the grass oil of Namur.
The fruits of Carum carui, a hardy biennial British plant, popularly known as caraway seeds, supply a volatile oil, which is carminitive and aromatic. Oils of a similar kind are obtained from Coriandrum sativum, from anise (Pimpinella Anisum), and cumin (Cuminum Cyminum), a native of Egypt.
The production of cinnamon, clove, and cassia oils, have already been noticed in speaking of those spices.
In Malabar, a greenish sweet-smelling oil is obtained, by distillation, from the roots of Unona Narum, an evergreen climber, which is used medicinally as a Stimulant.
OIL OF PEPPERMINT.—Mr. De Witt C. Van Slyck, of Alloway, Wayne county, New York, furnished me with the following particulars on the cultivation of peppermint, in December, 1849, which may appropriately be introduced in this place:—
“As an agricultural production, the culture of peppermint in the United States is limited to few localities; this county and the adjoining ones, Seneca and Ontario, comprise the largest bed. In the year 1846 about 40,000 lbs. of oil were produced. In Lewis county, in this state, it is grown, though to a less extent; the amount of oil produced there in 1846 was estimated at 4,500 lbs. In Michigan about 10,000 lbs. are annually produced; Ohio furnishes about 3,000 lbs. and Indiana 700 lbs. per annum. The entire crop in the United States, in the year 1846, is estimated in round numbers at 58,000 lbs.
The above comprises all the localities of any importance in the United States, and the above estimates of the annual product of oil were made from correct data for the year 1846, since which time the cultivation of mint has rapidly decreased in consequence of a speculative movement by a New York company, who in the spring of 1847 purchased nearly all the mint then growing in this State, and stipulated with the growers not to raise it for two years thereafter, which condition was generally observed on the part of the growers. The present year (1849), on account of the drought, has not realised the expectations of those engaged in its culture, although the amount of oil produced is much larger than the product of the two preceding years. In this mint district, 8,000 lbs. have been raised; Lewis county furnishes 1,000 lbs.; Michigan, 8.000 lbs.; Ohio, 1,000 lbs., and Indiana 500 lbs. So that the entire crop of 1849 will not materially vary from 18,500 lbs.
I have consulted several of the principal dealers in mint oil, whose opportunities have been ample to form a tolerably correct estimate of the amount of oil annually consumed, and their opinion fixes the total consumption, for the various purposes for which it is used in the United States and in Europe, at from 20,000 to 30,000 lbs. annually.
The price of mint oil is extremely fluctuating. Like other unstaple commodities, the value of which depends upon their scarcity or abundance, it never has assumed a constant and standing value, but its price has generally been deranged by speculation and monopoly. It has happened that the amount of oil produced was for several years greater than the annual consumption, producing an accumulation in the market, and reducing the price to the very low rate of 75 cents per pound; on the other hand, when the article was scarce, it readily sold for 5 dollars 25 cents per pound. The average price for fifteen vears has been about 2 dollars 50 cents, per pound. This year (1849) it readily sells for 1 dollar 50 cents., (6s. 6d.).
Peppermint began to be cultivated in this vicinity as an agricultural product about the year 1816, but for several years the want of a proper knowledge of its culture, and the expense and difficulty of extracting the oil, prevented its extension beyond a few growers, who, however, realised fortunes out of the enterprise. Almost any kind of soil that will successfully rear wheat and maize is adapted to the growth of mint. Rich alluvions, however, seem to be most natural, as would be inferred from the fact that the wild herb is almost uniformly found growing upon the tertiary formations on the margins of streams. The rich bottom lands along our rivers and the boundless prairies of the West are eminently adapted for its successful culture. It is believed by those best acquainted with the subject, that its cultivation must be ultimately confined to the western prairies, where it will grow spontaneously, and where the absence of noxious weeds and grasses, incident to all older settled lands, renders the expense of cultivation comparatively light, and where the low price of land will be an important item in the amount of capital employed, the expense of marketing being slight in comparison to that of the more bulky products of agricultural industry.
The method of cultivation is nearly uniform. The mode of propagation is by transplanting the roots, which may be done in autumn or spring, though generally the latter, and as the herb is perennial, it does not require replanting till the fourth year. To ensure a good crop and obviate the necessity of extra attendance the first season, the ground intended for planting should be fallowed the preceding summer, though this is not necessary if the land is ordinarily clean. The ground should be prepared as for maize, as soon as possible in the spring furrowed, and roots planted in drills twenty inches apart, and covered with loose earth, two inches deep, the planter walking upon the drill and treading it firmly. The proper time to procure roots is when the herb is a year old, when from six to eight square rods of ordinary mint will yield a sufficient quantity of roots to plant an acre, and the crop from which the roots are taken will not be deteriorated, but rather benefited by their extraction. As soon as the herb makes its appearance it requires a light dressing with a hoe, care being taken not to disturb the young shoots, many of which have scarcely made their appearance above the ground. In the course of a week or two the crop requires a more thorough dressing, and at this stage of growth the cultivator may be used with advantage, followed by the hoe, carefully eradicating weeds and grass from the drills, and giving the herb a light dressing of earth. Another dressing a week or two later is all the crop requires.
The two following years no labor is bestowed upon the crop, though it is sometimes benefited by ploughing over the whole surface, very shallow, in the autumn of the second year, and harrowing lightly the following spring, which frequently renews the vigor of the plant and increases the product.
The mint should be cut as soon as it is in full bloom, and the lower leaves become sere; the first crop will not be fit to cut as early as the two succeeding ones. It is then to be hayed and put in cock, and is then ready for distillation.
I have consulted many mint growers, who have cultivated it for a series of years, in regard to the average yield per acre, and have arrived at the following estimate, which I think is low, provided the land is suitable, and is properly cultivated. I estimate the average yield per acre for the first year at 18 lbs.; the second year at 14 lbs.; and the third year at 8 lbs.—making the product for three years 40 lbs., which I think will not materially vary from the actual result, though growers aver they have raised from 30 to 40 lbs. per acre the first season.
Several years since, the only method of extracting the oil then known was by distilling the herb in a copper kettle, or boiler, and condensing in the usual manner; a slow and tedious process, by which about 12 or 15 pounds of oil could be separated in a day. But recently steam, that powerful agent, which has wrought such immense changes in our social and national economy, has been applied to this subject with its usual attendant success. The present method consists in the use of a common steam-boiler, of the capacity of from 100 to 150 gallons, from which the steam is conveyed by conductors into large wooden air-tight tubs, of 200 gallons capacity, containing the dried herb; from which it is conveyed, charged with the volatile principle of the plant, into a water-vat, containing the condenser. The water collected at the extremity of the condenser, although it does not readily commingle with the oil, is highly tinctured with it, and is used to feed the boiler. Two tubs are necessary, in order that when the “charge” is being worked off in one, the other can be refilled. The oil is then to be filtered, and is ready for market. The expense of a distillery is estimated at 150 dollars, which, with the labor of two men, and a cord of dry wood, will run 40 lbs. of oil per day. The usual price for distilling is 25 cents per pound.
The cost of production is of course greatly modified by circumstances. If grown on rich bottom lands, or prairie, unusually free from weeds and grass, the labor required will be comparatively trifling. From information derived from the principal mint growers in this vicinity, I have prepared the following estimate of the cost of production of an acre of mint for three years:—
| FIRST YEAR. | |
| Dollars. | |
| Rent of an acre of land one year | 8.00 |
| One day plough and drag, one hand and team | 2.00 |
| Half day furrowing, digging roots, one hand and horse | 1.00 |
| Three days planting, at 75 cents | 2.25 |
| Two days dressing with hoe, at 75 cents | 1.50 |
| Two days with cultivator and hoe, 1.00 | 2.00 |
| Two days with cultivator and hoe (third dressing) | 1.50 |
| One and a-half days cutting new mint, at 75 cents | 1.13 |
| Curing and drawing to distillery | 1.50 |
| Distilling 18 lbs. oil, at 25 cents | 4.50 |
| Can for oil | .25 |
| 25.63 | |
| SECOND YEAR. | |
| Rent of an acre of land one year | 8.00 |
| Cutting one acre of old mint | .75 |
| Curing and hauling to distillery | 1.50 |
| Distilling 14 lbs. oil, at 25 cents | 3.50 |
| Can for oil | .25 |
| 14.00 | |
| THIRD YEAR. | |
| Rent of an acre of land one year | 8.00 |
| Cutting, curing, &c. | 2.25 |
| Distilling 8 lbs. of oil, at 25 cents, and can | 2.25 |
| 12.50 | |
| Total expenses for three years | 52.13 |
| Forty pounds of oil, at dollars 1.37½ per pound | 55.00 |
| Deduct expenses | 52.13 |
| Net profit | 2.87 |
In the above estimate I have omitted the expense of roots, for the reason that the crop will yield as many as are required for planting. The price of roots is about 50 cents per square rod, and if they are in demand, the profit of the crop will be greatly enhanced by selling them at that, or even a lower price.
It will be readily perceived that the culture of peppermint promises no great return of profit in sections of country where land is valuable, and where the expense of production is nearly double what it is in newly-settled districts. It is a fact that in Michigan, and other Western States, the actual expense of production is about one-half less than the above estimate, and the yield is a fourth greater; the greater distance from market, which is usually New York city, not being taken into account, the freight on oil being comparatively trifling. Another consideration in favor of prairie cultivation is, that the mint will endure for years by simply ploughing over the surface every second year, which seems to invigorate the herb, and obviates the necessity of replanting every second or third year, as must be done in older settled localities.”
In India the perfumed oils are obtained in the following manner:—The layers of the jasmine, or other flowers, four inches thick and two inches square, are laid on the ground and covered with layers of sesamum or any other oil yielding seed. These are laid about the same thickness as the flowers, over which a second layer of flowers like the fruit is placed. The seed is wetted with water, and the whole mass covered with a sheet, held down at the end and sides by weights, and allowed to remain for eighteen hours in this form. It is now fit for the mill, unless the perfume is desired to be very strong, when the faded flowers are removed and fresh ones put in their place. The seed thus impregnated is ground in the usual way in the mill and the oil expressed, having the scent of the flower. At Ghazipoor the jasmine and bela are chiefly employed; the oil is kept in the dubbers, and sold for about 4s. a seer.
The newest oils afford the finest perfume. In Europe a fixed oil, usually that of the bean or morerja nut, is employed. Cotton is soaked in this, and laid over layers of flowers, the oil being squeezed out so soon as impregnated with perfume. Dr. Johnson thus describes the culture and manufacture:—
Cultivation of Roses.—Around the station of Ghazipoor, there are about 300 biggahs (or about 150 acres) of ground laid out in small detached fields as rose gardens, most carefully protected on all sides by high mud walls and prickly pear fences, to keep out the cattle. These lands, which belong to Zemindars, are planted with rose trees, and are annually let out at so much per biggah for the ground, and so much additional for the rose plants—generally five rupees per biggah, and twenty-five rupees for the rose trees, of which there are 1,000 in each biggah. The additional expense for cultivation would be about eight rupees eight annas; so that for thirty-eight rupees eight annas you have for the season one biggah of 1,000 rose trees.
If the season is good, this biggah of 1,000 rose trees should yield one lac of roses. Purchases for roses are always made at so much per lac. The price of course varies according to the year, and will average from 40 to 70 rupees.
Manufacture of Rose-water.—The rose trees come into flower at the beginning of March, and continue so through April. Early in the morning the flowers are plucked by numbers of men, women, and children, and are conveyed in large bags to the several contracting parties for distillation. The cultivators themselves very rarely manufacture.
The native apparatus for distilling the rose-water is of the simplest construction; it consists of a large copper or iron boiler well tinned, capable of holding from eight to twelve gallons, having a large body with a rather narrow neck, and a mouth about eight inches in diameter; on the top of this is fixed an old dekchee, or cooking vessel, with a hole in the centre to receive the tube or worm.
This tube is composed of two pieces of bamboo, fastened at an acute angle, and it is covered the whole length with a strong binding of corded string, over which is a luting of earth to prevent the vapour from escaping. The small end, about two feet long, is fixed into the hole in the centre of the head, where it is well luted with flower and water. The lower arm or end of the tube is carried down into a long-necked vessel or receiver, called a bhulka. This is placed in a handee of water, which, as it gets hot, is changed. The head of the still is luted on to the body, and the long arm of the tube in the bhulka is also well provided with a cushion of cloth, so as to keep in all vapour. The boiler is let into an earthen furnace, and the whole is ready for operation. There is such a variety of rose-water manufactured in the bazar, and so much that bears the name, which is nothing more than a mixture of sandal oil, that it is impossible to lay down the plan which is adopted. The best rose-water, however, in the bazar, may be computed as bearing the proportion of one thousand roses to a seer of water; this, perhaps, may be considered as the best procurable.
From one thousand roses most generally a seer and a half of rose-water is distilled, and perhaps from this even the attar has been removed. The boiler of the still will hold from eight to twelve or sixteen thousand roses. On eight thousand roses from ten to eleven seers of water will be placed, and eight seers of rose-water will be distilled. This after distillation is placed in a carboy of glass, and is exposed to the sun for several days to become pucka (ripe); it is then stopped with cotton, and has a covering of moist clay put over it; this becoming hard, effectually prevents the scent from escaping. The price of this will be from twelve to sixteen rupees. This is the best that can be procured.
Attar of Roses.—To procure the attar, the roses are put into the still, and the water passes over gradually, as in the case of the rose-water process; after the whole has come over, the rose-water is placed in a large metal basin, which is covered with wetted muslin, tied over to prevent insects or dust getting into it; this vessel is let into the ground about two feet, which has been previously wetted with water, and it is allowed to remain quiet during the whole night. The attar is always made at the beginning of the season, when the nights are cool; in the morning the little film of attar which is formed upon the surface of the rose-water during the night is removed by means of a feather, and it is then carefully placed in a small phial; and, day after day, as the collection is made, it is placed for a short period in the sun, and after a sufficient quantity has been procured, it is poured off clear, and of the color of amber, into small phials. Pure attar, when it has been removed only three or four days, has a pale greenish hue; by keeping it loses this, and in a few weeks’ time it becomes of a pale yellow. The first few days distillation does not produce such fine attar as comes off afterwards, in consequence of the dust or little particles of dirt in the still and the tube being mixed with it. This is readily separated, from its sinking to the bottom of the attar, which melts at a temperature of 84 degrees. From one lac of roses it is generally calculated that 180 grains, or one tolah, of attar can be procured; more than this can be obtained if the roses are full-sized, and the nights cold to allow of the congelation. The attar purchased in the bazar is generally adulterated, mixed with sandal oil, or sweet oil; not even the richest native will give the price at which the purest attar alone can be obtained, and the purest attar that is made is sold only to Europeans. During the past year it has been selling from 80 to 90 rupees the tolah; the year before it might have been purchased for 50 rupees.
General Remarks.—Native stills are let out at so much per day or week, and it frequently occurs that the residents prepare some rose-water for their own use as a present to their friends, to secure their being provided with that which is the best. The natives never remove the calices of the rose-flowers, but place the whole into the still as it comes from the garden.
The best plan appears to be to have these removed, as by this means the rose-water may be preserved a longer time, and is not spoiled by the acid smell occasionally met with in the native rose-water. It is usual to calculate 100 bottles to one lac of roses. The rose-water should always be twice distilled; over ten thousand roses water may be put to allow of sixteen or twenty bottles coming out; the following day these twenty bottles are placed over eight thousand more roses, and about eighteen bottles of rose-water are distilled. This may be considered the best to be met with. The attar is so much lighter than the rose-water, that, previous to use, it is better to expose the rose-water to the sun for a few days, to allow of its being well mixed; and rose-water that has been kept six months is always better than that which has recently been made.
At the commencement of the rose season, people from all parts come to make their purchases, and very large quantities are prepared and sold. There are about thirty-six places in the city of Ghazeepore where rose-water is distilled. These people generally put a large quantity of sandal oil into the receiver, the oil is afterwards carefully removed and sold as sandal attar, and the water put into carboys and disposed of as rose-water. At the time of sale a few drops of sandal oil are placed on the neck of the carboy to give it fresh scent, and to many of the natives it appears perfectly immaterial whether the scent arises solely from the sandal oil or from the roses. Large quantities of sandal oil are every year brought up from the south and expended in this way.
6. The chief use the natives appear to make of the rose water, or the sandal attar as they term it, is at the period of their festivals and weddings. It is then distributed largely to the guests as they arrive, and sprinkled with profusion in the apartments. A large quantity of rose water is sold at Benares, and many of the native Rajahs send over to Ghazipoor for its purchase. Most of the rose water, as soon as distilled, is taken away, and after six months from the termination of the manufacture there are not more than four or five places where it is to be met with.
I should consider that the value of the roses sold for the manufacture of rose water may be estimated at 15,000 to 20,000 rupees a year; and from the usual price asked for the rose water, and for which it is sold, I should consider there is a profit of 40,000 rupees. The natives are very fond of using the rose water as medicine, or as a vehicle for other mixtures, and they consume a good deal of the petals for the conserve of roses, or goolcond as they call it.
The roses of Ghazipoor, on the river Ganges, are cultivated in enormous fields of hundreds of acres. The delightful odor from these fields can be scented at seven miles distance on the river. The valuable article of commerce known as attar of roses is made here in the following manner:—On 40 pounds of roses are poured 60 pounds of water, and they are then distilled over a slow fire, and 30 pounds of rose water obtained. This rose water is then poured over 40 pounds of fresh roses, and from that is distilled at most 20 pounds of rose water; this is then exposed to the cold night air, and in the morning a small quantity of oil is found on the surface. From 80 pounds of roses, about 200,000, at the utmost an ounce and a-half of oil is obtained; and even at Ghazipoor it costs 40 rupees (4l.) an ounce.
Five guineas have been often paid for one ounce of attar of roses. The most approved mode of ascertaining its quality is to drop it on a piece of paper; its strength is ascertained by the quickness with which it evaporates, and its worth by its leaving no stains on the paper. The best otto is manufactured at Constantinople.
A volatile oil, erroneously called oil of spikenard, is met with in the shops, which is obtained from a plant which has been named by Dr. Royle, the Andropogon Calamus aromaticus.
The true spikenard of the ancients is supposed to have been obtained from the Nardostachys Jatamansi, a plant of the Valerian family. Dr. Stenhouse describes rather minutely (“Journal Pharm. Soc.” vol. iv. p. 276) a species of East India grass oil, said to be the produce of Andropogon Ivaracusa, which he believes to be what is usually called the oil of Namur. It has a very fragrant aromatic odor, slightly resembling that of otto of roses, but not nearly so rich. Its taste is sharp and agreeable, approaching that of oil of lemons. It has a deep yellow color, and contains a good deal of resinous matter.
LEMON GRASS (Andropogon schœnanthus).—This fragrant grass, which is now cultivated very generally throughout the West Indies, in the gardens of the planters, as an elegant and powerful diaphoratic, was doubtless introduced from the East. The active principle of the leaves seems to reside in the essential oil which they contain. Lemon grass oil forms an important article of export from Ceylon, amounting in value to nearly £7,000 annually.
The Andropogon schœnanthus, which may be seen covering all the Kandian hills, is the best possible pasture for cattle—at least as long as it is young. This species of grass is very hard, and grows to the height of seven feet, and sometimes higher, and has a strong but extremely pleasant acid taste. It derives its name from having, when crushed, an odor like that of the lemon, so strong, that after a time it becomes quite heavy and sickening, although grateful and refreshing at first. It covers the hills in patches—those, at least, that are not overgrown with jungle and underwood—and it is to be found nowhere but in the Kandian district. Spontaneous ignition frequently takes place, and the appearance of the burning grass is described as most magnificent. A few days after, from the midst of this parched, blackened, and apparently dead ground, lovely young green shoots begin to arise—for the roots of this extraordinary grass have not even been injured, far less destroyed, by the fire; and in a very short time the whole brow of the mountain is again overspread with tufts of beautiful green waving grass.—(“Journal of Agriculture.”)
Otto of khuskhus or scented grass, from another species, A. digitalis, obtained at Ulwar in the States of Rajpootanah, was shown at the Great Exhibition in 1851, and Newar oil (from A. maritima) from Agra.
CITRONELLA OIL.—In the Southern province of Ceylon some half dozen estates about Galle are cultivated with citronella grass. The exports of this oil from Ceylon in the last three years have been as follows:—1850, 86,048 oz., valued at £3,344; 1851, 114,959 oz., valued at £3,742; in 1852, 131,780 oz., valued at £2,806.
PATCHOULY.—Under this name are imported into this country the dried foliaceous tops of a strongly odoriferous labiate plant, growing three feet high in India and China, called in Bengalee and Hindu, pucha pat. About 46 cases, of from 50 to 110 lbs. each, were imported from China, by the way of New York, in 1844. The price asked was 6s. per pound. Very little is known of the plant yielding it. Mr. George Porter, late of the island of Pinang, stated that it grows wild there and on the opposite shores of the Malay peninsula. Dr. Wallich says, that it obviously belongs to the family Labiatæ. Viney, in the “French Journal of Pharmacy,” suggests that it is the Plectranthus graveolens of R. Brown. It forms a shrub of two or three feet in height. It is the Pogostemon patchouly. The odor of the dried plant is strong and peculiar, and to some persons not agreeable. The dried tops imported into England are a foot or more in length. In India it is used as an ingredient in tobacco for smoking, and for scenting the hair of women. In Europe it is principally used for perfumery purposes, it being a favorite with the French, who import it largely from Bourbon. The Arabs use and export it more than any other nation. Their annual pilgrimship takes up an immense quantity of the leaf. They use it principally for stuffing mattrasses and pillows, and assert that it is very efficacious in preventing contagion and prolonging life. It requires no sort of preparation, being simply gathered and dried in the sun; too much drying, however, is hurtful, inasmuch as it renders the leaf liable to crumble to dust in packing and stowing on board. The characteristic smell of Chinese or Indian ink is owing to an admixture of this plant in its manufacture. M. de Hugel found the plant growing wild near Canton. By distillation it yields a volatile oil, on which the odor and remarkable properties depend. This oil is in common use in India for imparting the peculiar fragrance of the leaf to clothes among the superior classes of natives. The origin of its use is this:—A few years ago, real Indian shawls bore an extravagant price, and purchasers could always distinguish them by their odor; in fact, they were perfumed with Patchouly; the French manufacturers at length discovered this secret, and used to import the plant to perfume articles of their make, and thus palm off homespun shawls as real India! Some people put the dry leaves in a muslin bag, and thus use it as we do lavender, scenting drawers in which linen is kept; this is the best way to use it, as this odor, like musk, is most agreeable when very dilute.—(“Gardeners’ Chronicle.”)
The root of some parasitical plant, under the name of kritz, is used in Cashmere to wash the celebrated shawls, soap is used only for white shawls.
From the flowers of the Bengal quince (Ægle marmemolos) a fragant liquid is distilled in Ceylon known as marmala water, which is much used as a perfume for sprinkling by the natives.
Jasmine oil is distilled from Jasminum sambac and grandiflora.
SAPONACEOUS PLANTS.—Many plants furnish abroad useful substitutes for common soap. The aril which surrounds the seed and the roots of Sapindus Saponaria, an evergreen tree, I have seen used as soap in South America and the West Indies under the name of soap berries. The seed vessels are very acrid, they lather freely in water and will cleanse more linen than thirty times their weight of soap, but in time they corrode or burn the linen. Humboldt says that proceeding along the river Carenicuar, in the Gulf of Cariaco, he saw the Indian women washing their linen with the fruit of this tree, there called the parapara. Some other species of Sapindus and of Gypsophila have similar properties. The bruised leaves and roots of Saponaria officinalis, a British species, form a lather which much resembles that of soap, and is similarly efficacious in removing grease spots. The bark of many species of Quillaia, as Q. saponaria, when beaten between stones, makes a lather which can be used as a substitute for soap, in washing woollens and silk clothes, and to clean colors in dyeing, in Chili and Brazil, but it turns linen yellow. The fruit of Bromelia Pinguin is equally useful. A vegetable soap was prepared some years ago in Jamaica from the leaves of the American aloe (Agave Americana) which was found as detergent as Castile soap for washing linen, and had the superior quality of mixing and forming a lather with salt water as well as fresh. Dr. Robinson, the naturalist, thus describes the process he adopted in 1767, and for which he was awarded a grant by the House of Assembly:—“The lower leaves of the Curaca or Coratoe (Agave karatu) were passed between heavy rollers to express the juice, which, after being strained through a hair cloth, was merely inspissated by the action of the sun, or a slow fire, and cast into balls or casks. The only precaution necessary was to allow no mixture of any unctuous materials, which destroyed the efficacy of the soap. A vegetable soap, which has been found excellent for washing silk, &c. may be thus obtained. To one part of the skin of the Ackee add one and a half part of the Agave karatu, macerated in one part of boiling water for twenty-four hours, and with the extract from this decoction mix four per cent. of rosin. In Brazil, soap is made from the ashes of the bassura or broom plant (Sidu lanceolata) which abounds with alkali. There are also some soap barks and pods of native plants used in China. Several other plants have been employed in different countries as a substitute for soap. The bark of Quillaia saponaria renders water frothy and is used as a detergent by wool dyers. Saponaria vaccana is common in India. The pericarp of Sapindus emarginatus mixed with water froths like soap. Saponaceous berries are found in Java.
The soap-worts to which the genus Sapindus belongs are tropical plants. The fruit of many species of Sapindus is used as a substitute for soap, as Sapindus acuminata, Laurifolius emarginatus and detergens, all East Indian plants.