18 Indelible Ink for Marking Linen
Dissolve a drachm of lunar caustic, in half an ounce of pure cold water. Dip whatever is to be marked in pearlash water, dry it perfectly, then rub it smooth with a silver spoon, (ironing it sets the pearlash water,) write on it, and place it in the sun, and let it remain until the name appears plain and black. Red ink for marking linen, is made by mixing and reducing to a fine powder, half an ounce of vermilion, a drachm of the salt of steel, and linseed oil enough to render it of the consistency of black durable ink.