Colorless, odorless scales or powder with a faintly bitter taste. Soluble in water and in alcohol (1:18); freely soluble in glycerin (1:4). ACTION AND USES: Mild antiseptic and astringent. DOSAGE: 0.5 Gm. or 8 grains (U.S.P.), in solution. A watery solution, ranging from 2 per cent. to =saturated=, is used in the treatment of conjunctivitis, cystitis, etc. Externally used as dusting powder. _*Glyceritum Boroglycerini (Glycer. Boroglyc.), Glycerite of Boroglycerin, U.S.P._--Boroglycerin in glycerin representing 31% boric acid. _Liquor Antisepticus (Liq. Antisept.), Antiseptic Solution, N.F._--Boric acid (2.5%), thymol, eucalyptol, methyl salicylate, oil of thyme, menthol, sodium salicylate and sodium benzoate in alcohol and water. USES: Needlessly complex aromatic mouthwash. _*Unguentum Acidi Borici (Ung. Acid. Bor.), Ointment of Boric Acid, U.S.P._--Boric acid (10%) in paraffin and white petrolatum. =Acidum Bromauricum (Acid. Bromaur.), Bromauric Acid, N. F.=--Corresponds to not less than 32 per cent. of metallic gold. A dark-brown, odorless solid, with a metallic acid taste. Very soluble in water and in alcohol. ACTION AND USES: "Alterative" apparently of no value. DOSAGE: 0.006 Gm. or 1/10 grain (N.F.). _Liquor Auri et Arseni Bromidi (Liq. Aur. et Arsen. Brom.), Solution of Gold and Arsenic Bromide, N.F._--Contains hydrogen bromaurate (HAuBr{4}) and arsenic acid (H{3}AsO{4}) obtained by oxidizing a solution of arsenous oxide with bromine and adding bromauric acid. DOSAGE: 0.2 Cc. or 3 minims (N.F.) =Acidum Citricum (Acid. Cit), Citric Acid, U.S.P.= Colorless, odorless crystals. Very soluble in water (1:0.5) and in alcohol (1:1.8). ACTION AND USES: Substitute for lemon juice; also substitute for dilute hydrochloric acid in the treatment of gastric hypoacidity. DOSAGE: 0.5 Gm. or 8 grains (U.S.P.), in solution. _Syrupus Acidi Citrici (Syr. Acid. Cit.), Syrup of Citric Acid, U.S.P._--Citric acid (1%), flavored with tincture of lemon peel, in syrup. USES: Vehicle for salty substances such as bromides. =Acidum Formicum (Acid. Formic), Formic Acid, N.F.=--HCOOH (about 25%). A clear, colorless liquid, with a characteristic pungent odor, and an acid reaction. ACTION AND USES: Externally as caustic irritant, but without advantage over mustard. Internally as slightly irritant diuretic, but without advantage over nitrates. The elixirs containing various formates are intended as tonics, but there is no good evidence that they have such action. They are needlessly complex and irrational. DOSAGE: 0.3 Cc. or 5 minims (N.F.). _Elixir Formatum (Elix. Format.), Elixir of Formates, N.F._--Potassium formate (5%), sodium formate (5%) and aromatic elixir. Absolute alcohol content about 15 per cent. DOSAGE: 8 Cc. or 2 fluidrachms (N.F.).