Odorless, grayish-orange-brown pieces or bright yellow powder, with a very acrid taste. Not less than 65 per cent. soluble in alcohol. ACTION AND USES: A powerful irritant hydragogue cathartic; not often employed alone. Usually administered in combination with other drugs. DOSAGE: 0.125 Gm. or 2 grains (U.S.P.), in pills. =*Camphora (Camph.), Camphor, U.S.P.=--A volatile solid obtained from the camphor tree. Tough, white, translucent masses with a pungent odor and taste. Slightly soluble in water and freely soluble in alcohol, chloroform, ether and fixed or volatile oils. ACTION AND USES: Used hypodermically to stimulate the circulation and respiration in collapse. Opinions are divided as to its efficiency. Locally, applied as a mild irritant and antiseptic. DOSAGE: By mouth 0.2 Gm. or 3 grains (U.S.P.). Hypodermic, 0.1 Gm. or 1-1/2 grains (U.S.P.), as 10 per cent. solution in oil. _*Aqua Camphorae (Aq. Camph.), Camphor Water, U.S.P._--A saturated solution of camphor in water. DOSAGE: 10 Cc. or 2-1/2 fluidrachms (U.S.P.). _Ceratum Camphorae (Cerat. Camph.), Camphor Cerate, N.F._--Camphor (2%), with cottonseed oil, white wax, white petrolatum and benzoinated lard. _Emplastrum Fuscum Camphoratum (Emp. Fusc. Camph.), Camphorated Brown Plaster, N.F._ (Camphorated Motherplaster).--Camphor (1%), red oxide of lead, olive oil and yellow wax. _*Linimentum Camphorae (Lin. Camph.), Camphor Liniment, U.S.P._ (Camphorated Oil).--Camphor (20%) in cottonseed oil. USES: Mild counterirritant. Note: This preparation, as found in drug stores, should never be used hypodermically. _Mistura Camphora Acida._--See under =Opium=. _Mistura Camphorae Aromatica._--See under =Oleum Lavandulae=. _*Spiritus Camphorae (Sp. Camph.), Spirit of Camphor, U.S.P._--Camphor (10%), in alcohol. Absolute alcohol content about 90 per cent. DOSAGE: 1 Cc. or 15 minims (U.S.P.). _Unguentum Camphorae (Ung. Camph.), Camphor Ointment, N.F._--Camphor (22%) in white wax and lard. _Unguentum Fuscum (Ung. Fusc.), Brown Ointment, N.F._ (Unguentum Matris, Mother's Salve).--Camphorated brown plaster (50%) olive oil and prepared suet. =Camphora Monobromata (Camph. Monobrom.), Monobromated Camphor, U.S.P.= Colorless crystals or white powder, with a mild camphoraceous odor and taste. Freely soluble in alcohol (1:6.5); almost insoluble in water. ACTION AND USES: Formerly recommended as a sedative and hypnotic but now seldom used. Value doubtful. DOSAGE: 0.125 Gm. or 2 grains (U.S.P.). =Canella (Canell.), Canella, N.F.=--A bark. ACTION AND USES: Obsolete aromatic bitter, without advantage over gentian. DOSAGE: 2 Gm. or 30 grains (N.F.) =Cannabis (Cannab.), Cannabis, U.S.P.= (Cannabis Indica, U.S.P. VIII).--Flowering tops of _Cannabis sativa_ (or var. _indica_).