Gossypium. Cotton. The hairs of the seeds of Gossypium Bar- 

 badense. 



GRANATI CORTEX. POMEGRANATE BARK. The dried bark of the 

 stem and root of Punica Granatum. Usually in curved irregular or 

 channeled pieces, 2-4 inches long, #-1 inch wide: the outer surface of the 

 root bark rough yellowish-grey, the stem bark smoother, the inner surface 

 is yellow tinged with brown: odourless: taste astringent and bitter. The 

 important active principle is the alkaloid, pelletierine. 



Decoctum Granati Corticis. Dose, #-2 fl. oz.; 15-30 c.c. 

 20; boiled in 100 of Water. 



Guaiaci Lignum. Guaiacum Wood. The heart wood of Guaiacum 

 officinale or sanctum. Dark greenish-brown, dense, heavier than water; 

 odour when heated aromatic; taste acrid. 



GUAIACI RESINA. GUAIACUM RESIN. Dose, 5-15 grs.; 3-10 dgms. 

 The resin obtained from the bark of Guaiacum officinale. Usually in 

 arge masses but sometimes in tears; brittle in thin splinters transparent, 

 varying in colour from yellowish-green to reddish-brown; odour, more ap- 

 parent when warmed, balsamic; taste slightly acrid. 



Incompatibles, a change in colour to blue is induced in alcoholic so- 

 lutions by nitric acid, potassium permanganate, ferric chloride, spirit of 

 nitrous ether, and other oxidizing agents; sulphuric acid turns it reddish, 

 and mucilage of acacia blue. 



3 Mistura Guaiaci. Dose, y 2 -\ fl. oz.; 15-30 c.c. 

 2.5; Sugar, 2.5; Tragacanth, 0.4; Cinnamon Water, 100. 



: Tinctura Guaiaci Ammoniata. Dose, 30-60 min.; 2-4 c.c. 

 20; Oil of Nutmeg, 0.31 ; Oil of Lemon, 0.21 ; Strong Solution of Ammonia, 

 7.5; Alcohol to 100. 



2 Trochiscus Guaiaci Resinae. 3 grs. with the Fruit Basis. 



Haematoxyli Lignum. Logwood. The heart wood of Haematoxy- 

 lon campechianum. Hard, heavy, dull orange to purplish-red externally, 

 internally reddish-brown; odour slight and agreeable; taste sweetish and as 

 tringent. Contains tannic acid and a colouring matter, haematoxylin 

 Incompatibles, mineral acids, metallic salts, especially ferric, lead and anti- 

 mony, lime-water. 



Decoctum Haematoxyli. Dose, ]^-\ fl. oz. ; 15-30 c.c. 

 5; Cinnamon Bark, 0.8; boiled with water, and made up to 100. 



Hamamelidis Cortex. Hamamelis Bark. (Witch Hazel Bark.) 

 The dried bark of Hamamelis virginiana. Usually in curved pieces 28- 

 inches long, 1/16 inch thick; outer surface silvery-grey if covered with 

 the cork, but if freed from it nearly smooth and reddish-brown, the inner 



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