*_Tinctura Aconiti (Tr. Aconit.), Tincture of Aconite, U.S.P._ (Aconiti Tinctura, P.I.).--Aconite (10%) yielding about 0.05 per cent. of alkaloids, in alcohol and water. Alkaloidal assay unreliable. Biologically assayed by producing death in the guinea-pig. Absolute alcohol content about 65 per cent. DOSAGE: 0.3 Cc. or 5 minims (U.S.P.). Physicians should specify the biologically assayed product. =*Adeps (Adeps), Lard, U.S.P.= Insoluble in water, and only slightly soluble in alcohol. ACTION AND USES: Basis for ointments. Used particularly when absorption is desired. _*Adeps Benzoinatus (Adeps Benz.), Benzoinated Lard, U.S.P._--Somewhat antiseptic and less liable to rancidity than ordinary lard. _Unguentum (Ung.), Ointment, U.S.P._ (Simple Ointment).--White wax (20%) and benzoinated lard. =Adeps Lanae (Adeps Lan.), Wool Fat, U.S.P.= (Anhydrous Lanolin).--Purified wool fat, freed from water. Insoluble in but miscible with about twice its weight of water; sparingly soluble in cold alcohol. ACTION AND USES: Basis for ointments; because of its tenacious consistency, should be mixed with some other base. _*Adeps Lanae Hydrosus (Adeps Lan. Hyd.), Hydrous Wool Fat, U.S.P._ (Lanolin).--Wool fat with about 27 per cent. of water. USES: Ointment used particularly when absorption through the skin is desired; mixed with white petrolatum or lard. =Adonis (Adonis), Adonis, N.F.= (Pheasant's Eye).--The plant deprived of its root. ACTION AND USES: Cardiac tonic of digitalis group, but of unreliable activity. DOSAGE: 0.125 Gm. or 2 grains (N.F.). _Fluidextractum Adonidis (Fldext. Adonid.), Fluidextract of Adonis, N.F._--Adonis (100%). Absolute alcohol content about 60 per cent. DOSAGE: 0.125 Cc. or 2 minims (N.F.). =*Aether (Aether), Ether, U.S.P.=--Contains about 96.5 per cent. of ethyl oxide. A clear, colorless, very inflammable liquid with a characteristic odor and a burning, sweetish taste. Soluble in water (1:12), and miscible with alcohol, chloroform, petroleum benzin, benzene, and fixed or volatile oils. ACTION AND USES: General anesthetic, administered by inhalation; when administered by mouth, carminative. DOSAGE: 1 Cc. or 15 minims. _*Spiritus Aetheris (Sp. Aeth.), Spirit of Ether, U.S.P._ (Hoffmann's Drops).--Ether (32.5%) in alcohol. Absolute alcohol content about 65 per cent. USES: Carminative and fugacious indirect circulatory stimulant. DOSAGE: 4 Cc. or 1 fluidrachm (U.S.P.). _Spiritus Aetheris Compositus (Sp. Aether. Co.), Compound Spirit of Ether, N.F._ (Hoffmann's Anodyne).--Ether (32.5%), ethereal oil (2.5%) and alcohol. Absolute alcohol content about 60 per cent. USES: A superfluous modification of spirit of ether. DOSAGE: 4 Cc. or 1 fluidrachm (N.F.) =Aether Aceticus (Aeth. Acet.), Acetic Ether, N.F.= (Ethyl Acetate). A colorless, fragrant liquid, with a burning taste.