tion of numbness. Almost insoluble in water, soluble 1 in 10 alcohol. 

 1 in 12 of olive oil, insoluble in glycerin. 



3 Unguentum Cocainse. 4; Oleic Acid (by weight) 16; Lard, 80. 



COCAINE HYDROCHLORIDUM. Dose, i/5-Kgr.; 12-30 mgms 

 Colourless crystals, taste bitter, followed by a sensation of numbness. 

 Soluble, 2 in 1 of water, 1 in 4 of alcohol, 1 in 4 of glycerin, insoluble in 

 olive oil or ether. Incompatibles, as for alkaloids; and strong solutions of 

 acids, or alkalies; calomel. 



^njectio Cocainae Hypodermica. Dose, 2-5 min.; 0.12-0.3 c.c. 

 10; Salicylic Acid, 1.5; Water, recently boiled, 100. 1. gr. in 11 min. 



lamellae Cocainae. Gelatine, disks each containing 1/50 gr. 

 of cocaine. 



Trochiscus Kramerise et Cocainae. 1/20 gr.; Krameria, 1 gr.; 

 with the Fruit Basis. 



Coccus. Cochineal. The dried fecundated female insect, Coccus 

 Cacti. About 1/5 of an inch long; roughly oval in outline, transversely 

 wrinkled, concave beneath, convex above, purplish-gray in colour; when 

 powdered, dark red. Contains a colouring principle, carmine. 



Tinctura Cocci. Dose, 5-15 min.; 0.3-1 c.c. 

 10; Alcohol 45%, 100: by maceration. 



Codeina (see Opium p. 80). 



COLCHICI CORMUS. CoLCHicuM CoRM. Dose, 2-5 grs. ; 1-3 dgms. 

 The fresh corm is stripped of its coats, sliced transversely and dried. 

 The dried slices are about 1/10 of an inch thick and about 1 broad, some- 

 what reniform in shape, whitish in colour; taste bitter; without odour; 

 contains an alkaloid, colchicine, which is incompatible with iodides, guaia- 

 cum, and all astringent preparations. 



3 Extractum Colchici. Dose, 1/4-1 gr.; 15-60 mgms. 

 The juice of the fresh corms, expressed and dried to a soft consistence. 



iVinum Colchici. Dose, 10-30 min.; ^-2 c.c. 

 Dried Corm, 20; Sherry, 100: by maceration. 



COLCHICI SEMINA. COLCHICUM SEEDS. The dried ripe seeds of 

 Colchicum autumnale. About 1/10 inch in diameter, reddish-brown, 

 rough, minutely pitted; very hard and tough; odourless, taste acrid and 

 bitter. Contains the alkaloid, colchicine. Incompatibles, as above. 



2 Tinctura Colchici Seminum. Dose, 5-15 min.; 0.3-1 c.c. 

 20; Alcohol 45%, 100: by percolation. 



Collodium (see Pyroxylin p. 87). 



53 



