Catechu. Catechu. Dose, 5 - 15 grs.; 3 - 10 dgms. An extract obtained from the leaves and young shoots of Uncaria Gambier. In cubes, about an inch on the side, often agglutinated, deep reddish-brown externally, porous and friable, consisting largely of minute crystals; taste, at first bitter and astringent, subsequently sweetish; odourless. Active principles catechin and catechu-tannic acid.

Incompatibles, gelatin, albumin, sulphuric acid and ferric salts.

1Pulvis Catechu Compositus. Dose, 10 - 40 grs.; 1/2 - 2 1/2 gms. - 40; Kino, 20; Krameria Root, 20; Cinnamon Bark, 10; Nutmeg, 10.

2Tinctura Catechu. Dose, 30 - 60 min.; 2 - 4 c.c. - 20; Cinnamon Bark, 5; Alcohol 60%, 100: by maceration.

3Trochiscus Catechu. 1 gr. in a lozenge made with the Simple Basis.

Cera Alba. White Beeswax. Yellow Beeswax bleached. Hard, nearly white, translucent masses.

Cera Flava. Yellow Beeswax. Prepared from the comb of the bee, Apis mellifica. Insoluble in water, 3% soluble in alcohol, 50% soluble in ether, completely soluble in oil of turpentine.