This section is from the book "Materia Medica Pharmacy, Pharmacology And Therapeutics", by W. Hale White. Also available from Amazon: Materia Medica Pharmacy, Pharmacology And Therapeutics..
Lard. - The prepared internal fat of the abdomen of Sus scrofa Linne (class Mammalia; order Pachydermata), purified by washing with water, melting, and straining.
A soft, white, unctuous solid, having a faint odor free from rancidity, and a bland taste.
1) Olein, 60 per cent. (2) Stearin. (3) Palmitin. Adeps Induratus (Indurated Lard), which is ordinary lard deprived of a portion of its oil by pressure, may be used in hot climates when the high temperature renders ordinary lard too soft for use in ointments.
1. Adeps Benzoinatus. - See Benzoin, p. 656.
2. Ceratum. - Cerate. White Wax, 300; lard, 700.
3. Ceratum Resinae. - See Resin, p. 523.
4. Unguentum. - Ointment Lard, 800; Yellow Wax, 200.
A fixed oil expressed from Lard at a low temperature.
A colorless, or pale yellow oily liquid, having a peculiar odor, and a bland taste. Sp. gr., 0.910 to 0.920.
1) Olein. (2) Palmitin. (3) Stearin.
Lard is an emollient, and is used as a basis for ointments when it is wished that the active ingredient should be absorbed, for lard melts at the temperature of the body, especially if bandaged on. The benzoinated lard has the advantage of not quickly becoming rancid.