II.
Zoology and Comparative Anatomy.
The divisions of the animal kingdom (816. 817).
816.
Man. The description of man, which includes that of such creatures as are of almost the same species, as Apes, Monkeys and the like, which are many,
The Lion and its kindred, as Panthers. [Footnote 3: Leonza—wild cat? "Secondo alcuni, lo stesso che Leonessa; e secondo altri con piu certezza, lo stesso che Pantera" FANFANI, Vocabolario page 858.] Wildcats (?) Tigers, Leopards, Wolfs, Lynxes, Spanish cats, common cats and the like.
The Horse and its kindred, as Mule, Ass and the like, with incisor teeth above and below.
The Bull and its allies with horns and without upper incisors as the Buffalo, Stag Fallow Deer, Wild Goat, Swine, Goat, wild Goats Muskdeers, Chamois, Giraffe.
817.
Describe the various forms of the intestines of the human species, of apes and such like. Then, in what way the leonine species differ, and then the bovine, and finally birds; and arrange this description after the manner of a disquisition.
Miscellaneous notes on the study of Zoology (818-821).
818.
Procure the placenta of a calf when it is born and observe the form of the cotyledons, if their cotyledons are male or female.
819.
Describe the tongue of the woodpecker and the jaw of the crocodile.
820.
Of the flight of the 4th kind of butterflies that consume winged ants. Of the three principal positions of the wings of birds in downward flight.
[Footnote: A passing allusion is all I can here permit myself to Leonardo's elaborate researches into the flight of birds. Compare the observations on this subject in the Introduction to section XVIII and in the Bibliography of Manuscripts at the end of the work.]
821.
Of the way in which the tail of a fish acts in propelling the fish; as in the eel, snake and leech.
[Footnote: A sketch of a fish, swimming upwards is in the original, inserted above this text.—Compare No. 1114.]
Comparative study of the structure of bones and of the action of muscles (822-826).
822.