B. P., not official. - Soap made with sodium hydrate and a purified animal fat consisting principally of Stearin. It is chiefly Sodium Stearate, but contains some Sodium Palmitate and about 30 per cent. of water.

Uses of Curd Soap.

Curd soap is used as a basis for plasters, liniments, pills and suppositories. Emplastrum Saponis consists of curd soap, 10; lead plaster, 36; resin, 12. Emplastrum Saponis Fuscum (brown soap plaster) is curd soap, 20; yellow wax, 25; olive oil, 40; lead oxide, 30; vinegar, 320.