by some still believed to be useful in the treatment of the symptoms arising from excessive cardiac hypertrophy. Toxic symptoms may occur from local absorption.

Dosage: 0.03 Gm. or 1/2 grain (U.S.P.); not used as such.

Extractum Aconiti (Ext. Aconit.), Extract of Aconite, U.S.P. (Powdered Extract of Aconite).—Yields about 2 per cent. of ether-soluble alkaloids. Biologically assayed by producing death in the guinea-pig.

Dosage: 0.01 Gm. or 1/6 grain (U.S.P.). Physicians who prescribe extract of aconite should specify the biologically assayed product.

Fluidextractum Aconiti (Fldext. Aconit.), Fluidextract of Aconite, U.S.P.—Aconite (100%), yielding about 0.5 per cent. of alkaloids. Absolute alcohol content about 70 per cent. Biologically assayed by producing death in the guinea-pig.

Dosage: 0.03 Cc. or 1/2 minim (U.S.P.). Physicians who prescribe fluidextract of aconite should specify the biologically assayed product. Best to use the tincture.

Linimentum Aconiti et Chloroformi (Lin. Aconit. et Chlorof.), Liniment of Aconite and Chloroform, N.F.—Fluidextract of aconite (4.5%), in alcohol, chloroform and soap liniment.

*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.

Action and Uses: Carminative, similar to and without special advantage over ether. Also used pharmaceutically, as flavoring ingredient.

Dosage: 1 Cc. or 15 minims (N.F.).

*Aether Nitrosus, Nitrous Ether.—Ethyl nitrite.

*Spiritus Aetheris Nitrosi (Sp. Aeth. Nitros.), Spirit of Nitrous Ether, U.S.P. (Sweet Spirit of Nitre).—Ethyl nitrite (about 4%) in alcohol. Absolute alcohol content about 92 per cent.

Action and Uses: Popularly used as a weak diuretic and diaphoretic. Unstable and therefore unreliable. Has the physiologic action of a weak nitrite.

Dosage: 2 Cc. or 30 minims (U.S.P.).

Aethylis Carbamas (Aethyl. Carbam.), Ethyl Carbamate, U.S.P. (Carbamic Acid Ethyl Ester, Urethane, Ethyl Urethane).

Colorless, odorless crystals or scales, with a cooling, saline taste. Freely soluble in water (1:0.45) and in alcohol (1:0.8). Incompatible with alkalies, acids and most other chemicals.

Action and Uses: Very mild and relatively harmless hypnotic.

Dosage: 1 Gm. or 15 grains (U.S.P.) in powder, cachets or solution.

*Aethylis Chloridum (Aethyl. Chlor.), Ethyl Chloride, U.S.P.—Monochlorethane, CH₃CH₂Cl.

A colorless, very volatile liquid, with an agreeable odor and a sweetish, burning taste. The vapor is very inflammable. Slightly soluble in water and freely soluble in alcohol and in ether.

Action and Uses: Local anesthetic for minor operations. Used in the form of a spray to produce intense cold. Has also been used by inhalation as general anesthetic in short operations.

*Aethylmorphinae Hydrochloridum (Aethylmorph. Hydrochl.), Ethylmorphine Hydrochloride, U.S.P. (Ethylmorphine Chloride, Dionin).

A white, odorless powder, with a slightly bitter taste. Very soluble in water (1:8) and soluble in alcohol (1:22).

Action and Uses: Systemically, intermediate between those of morphine and codeine. Probably possesses no advantage over codeine. When applied to the eye it causes local hyperemia terminating in acute conjunctival edema.

Dosage: 0.015 Gm. or 1/4 grain (U.S.P.). Used as 10 per cent. ointment or