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. 



^ulvis Catechu Compositus. Dose, 10-40 grs.; K-2K gms. 

 40; Kino, 20; Krameria Root, 20; Cinnamon Bark, 10; Nutmeg, 10. 



2 Tinctura Catechu. Dose, 30-60 min.; 2-4 c.c. 

 20; Cinnamon Bark, 5; Alcohol 60%, 100: by maceration. 



3 Trochiscus 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. 



CERIUM. CERIUM. 



Oxalas. Cerium oxalate. Dose, 2-10 grs.; 1-6 dgms. 

 Ce 2 (C 2 O 4 ) 3 , 9H 2 O. A nearly white, granular powder, odourless, tasteless. 

 Insoluble in water and other ordinary solvents, soluble in dilute sulphuric 

 and hydrochloric acids. Incompatibles, alkali hydrates. 



Cetaceum. Spermaceti. A concerte fatty substance obtained from 

 the head of the Sperm Whale, Physeter macrocephalus, and subsequently 

 purified. Crystalline, pearly white, glistening, translucent masses, unc- 

 tuous to the touch, odourless, and flavourless, Insoluble in water, almost 

 so in alcohol, soluble in ether, chloroform, and boiling alcohol. 



Unguentum Cetacei. 20; White Beeswax, 8 Almond Oil by 

 weight, 72; Benzoin, 2. 



Charta (see Sinapis p. 93). 



Chirata. Chiretta. The dried plant Swertia Chirata, collected 

 when in flower. Stem 3 feet or more in length, purplish externally, with 

 a pith within; branches, slender: leaves glabrous and entire; flowers small, 

 numerous and in panicles: odourless; taste extremely bitter. Contains a 

 bitter but no tannic acid. 



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