Medicinal Tinctures. These are solutions of the active principles of bodies, obtained by digesting them in alcohol more or less dilute. Ethereal tinctures are similar solutions prepared with ether. (See Nos. 35 (To Prepare Tinctures), etc..) Where percolation is resorted to in the preparation of tinctures, the directions laid down in No. 41 should be carefully followed to ensure success.

4480. Tincture of Assafetida

4480.    Tincture of Assafetida. Macerate 4 troy ounces assafetida in 2 pints alcohol for 2 weeks, and filter through paper. (U. S.Ph.)

4481. Tincture of Aconite Leaf

4481.      Tincture of Aconite Leaf. Take 4 troy ounces recently dried aconite leaf in fine powder; moisten with 2 fluid ounces diluted alcohol; pack it firmly in a conical percolator, and gradually pour diluted alcohol sufficient to displace 2 pints of tincture. (U. S.Ph.)

4482. Tincture of Aconite Root

4482.      Tincture of Aconite Root. Take 12 troy ounces aconite root in fine powder; moisten with 6 fluid ounces alcohol; pack it firmly in a cylindrical precolator, and gradually pour alcohol upon it until 2 pints of tincture are obtained. ( U. S. Ph.)

4483. Tincture of Arnica

4483.      Tincture of Arnica. Take 6 troy ounces tincture of arnica; mix 1 1/2 pints alcohol and 1/2 pint water; moisten the arnica slightly with this mixture, and bruise it thoroughly in a mortar. Then pack it firmly in a cylindrical percolator, and pour upon it first the remainder of the mixture, and afterwards sufficient diluted alcohol to make the tincture measure 2 pints. ( U. S. Ph.)

4484. Tincture of Belladonna

4484.    Tincture of Belladonna. Moisten 4 troy ounces recently dried belladonna leaf, in fine powder, with 2 fluid ounces diluted alcohol; pack it firmly in a conical percolator, and gradually pour diluted alcohol upon it until 2 pints of tincture are obtained. (U.S. Ph.)

4485. Tincture of Hemp

4485.     Tincture of Hemp. Dissolve 360 grains purified extract of hemp in 1 pint alcohol, and filter through paper. (U. S. Ph.)

4486. Tincture of Capsicum

4486.    Tincture of Capsicum. Moisten 1 troy ounce capsicum, in fine powder, with 1/2 fluid ounce diluted alcohol; pack it in a conical percolator, and gradually pour diluted alcohol upon it until 2 pints of tincture are obtained. (U. S. Ph.)

4487. Tincture of Cinchona

4487.    Tincture of Cinchona. Moisten 6 troy ounces yellow cinchona, in moderately fine powder, with 2 fluid ounces diluted alcohol ; pack it firmly in a glass percolator and displace, with diluted alcohol, 2 pints of tincture. (U. S. Ph.)

4488. Compound Tincture of Cinchona

4488.      Compound Tincture of Cinchona. Take 4 troy ounces red cinchona, 3 troy ounces bitter orange peel, 6 drachms serpentaria (Vinginia snakeroot), 3 drachms red saunders, all in moderately fine powder; and 3 drachms saffron in moderately coarse powder. Mix the powders, moisten with 4 fluid ounces diluted alcohol, pack it firmly in a glass percolator, and displace, with diluted alcohol, 21/2 pints of tincture. ( U. S. Ph.)