Tincture of Perchloride of Iron. Syn. Tinctura ferri perchloridi. (B. P.) Prep. Mix 5 fl. oz. of strong solution of perchloride of iron with 15 fl. oz. of rectified spirit.—Dose, 10 to 30 minims.

Tincture of Phos′phorus (Ethereal). Syn. Æther phosphoratus, Tinctura phosphori ætherea, L. Prep. 1. (Ph. Hann. 1831.) Phosphorus (powdered by agitation with rectified spirit), 16 gr.; ether, 2 oz.; macerate, with agitation, for 4 days, then decant the clear portion, and preserve it in a stoppered bottle, in a cool dark situation.

2. (P. Cod.) Phosphorus, cut small, 1 part; ether, 50 parts; digest with occasional agitation for 1 month, and decant the clear.—Dose, 5 to 15 drops, in any bland vehicle, thrice daily; in impotency, low sinking conditions of the system, &c.

Tincture of Poplar Buds. Syn. Tinctura populi. (Van Monc.) Prep. Poplar buds, 4 oz.; rectified spirit, 24 oz. Macerate and filter.

Tincture of Quas′sia. Syn. Tinctura quassiæ (B. P., Ph. E), L. Prep. 1. (B. P.) Quassia in chips, 34; proof spirit, 20; digest 7 days; filter, and make up to 20.—Dose, 1 to 2 dr.

2. (Ph. E.) Quassia, in chips, 10 dr.; proof spirit, 1 quart; digest 7 days. Bitter, tonic.—Dose, 12 to 2 fl. dr.; in dyspepsia, &c.

Tincture of Quassia (Compound). Syn. Tinctura quassiæ composita (Ph. E.), L. Prep. (Ph. E.) Cardamoms and cochineal, of each, bruised, 12 oz.; powdered cinnamon and quassia chips, of each 6 dr.; raisins, 7 oz.; proof spirit, 1 quart; digest for 7 days (or by percolation), then press, and filter. Aromatic and tonic.—Dose and use, as the last.

Tincture of Quinine (Ammoniated). Syn. Tinctura quininæ ammoniata. (B. P.) Prep. Sulphate of quinine, 160 gr.; solution of ammonia, 212 fl. oz.; proof spirit, 1712 oz.; dissolve the quinine in the spirit with a gentle heat, and add the solution of ammonia.—Dose, 12 dr. to 2 dr.

Tincture of Quinine (Compound). Syn. Fever drops; Tinctura quinæ (B. P.); Tinctura quinæ composita (Ph. L.) Prep. 1. (B. P.) Sulphate of quinia, 1; tincture of orange peel, 60; dissolve with a gentle heat, digest for 3 days with occasional agitation and strain.—Dose, 1 to 112 dr.

2. (Ph. L.) Sulphate of quinine, 5 dr. 1 scrup. (or 320 gr.); tincture of orange peel, 1 quart; digest, with agitation, for 7 days, or until solution is complete.