638 VEGETABLE DRUGS 



tion of the chloroform and evaporation of the residue until it weighs 

 15 (Gm.), and solution in flexible collodion, 85. 



Collodium Flexile. Flexible Collodion. (U. S. & B. P.) 

 Mix collodion, 920; Canada turpentine, 50; and castor oD, 30. 

 (U. S. P.) 



Collodium Stypticum. Styptic Collodion. (U. S. P.) 

 Mix tannic acid, 30; alcohol, 5; ether, 25; add collodion to make 

 100. 



Action and Uses. — Collodion, when painted on dry skin, 

 rapidly dries and leaves a thin, protective coating. It is a 

 useful agent to seal and secure coaptation of small wounds 

 and to keep them aseptic. Also to protect abraded surfaces,, 

 as fissures of teats. Flexible collodion is less apt to crack. 

 Collodion contracts the superficial tissues and will often 

 abort boils when applied directly over them. Collodion is 

 employed as a vehicle for the application of many other 

 agents, as corrosive sublimate, carbolic acid, iodoform, etc. 



EuPHORBiUM. Buphorbium. (Non-official.) 



The dried juice of a cactus-like plant, Euphorbium 

 resinifera, growing in Morocco and regions contiguous to the 

 Atlas Mountains. Obtained by incising the stems and 

 branches. 



Description. — In dull yellowish tears, of the size of peas; 

 odorless ; taste acrid ; powder of a grayish color ; insoluble 

 in water, but soluble in alcohol, ether and oil of turpentine. 



Constituents. — 1, an acrid resin (CmHjjOJ, 38 per cent., 

 the active principle ; 2, euphorbon. 



Action and Uses. — Buphorbium is an intense irritant, 

 both externally and internally. It is sometimes employed 

 in veterinaiy medicine as a constituent of vesicating prepara- 

 tions to enhance their effect, but if applied alone it is liable 

 to cause extensive irritation, sloughing, and destruction of 

 tissue. Euphorbium may, however, be safely applied in 

 tincture (1-16), or in ointment with cantharides, as a vesicant 

 for horses. The following combination is recommended as 

 a powerful blister for the latter animals. Euphorbium and 

 cantharides, each two parts ; corrosive sublimate, one part ; 



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