160 INORGANIC AGENTS 



injections per rectum ; 1| ounces for small animals and 10 

 ounces to a pint for larger animals of the following aqueous 

 solution, given at body temperature after the bowel has 

 received a cleansing enema of boiled water. The solution 

 is made of gelatin to the amount of 6 per cent, and calcium 

 chloride to the amount of 1 per cent., to which a little 

 laudanum may be added to prevent expulsion. It should 

 be repeated every five hours as long as there is danger of 

 hemorrhage. Kecent experiments by H. 0. Wood, Jr., 

 appear to show that gelatin may be given ad libitum by the 

 mouth and retain its hemostatic action; therefore gelatin 

 should be given freely in this way as well. Aqueous solu- 

 tions of gelatin 10 per cent, with calcium chloride 1 per cent., 

 have been used locally to arrest bleeding in wounds and 

 cavities of the body, but considering the danger of tetanus 

 and the fact that adrenalin chloride is a better local hemo* 

 static, such a use of gelatin is inadvisable. 



Gelatinum. Purified Gelatin. (U. S. P.) 



Calx Chloeata. (See Chlorine, p. 237.) 



Calcii Sulphas Exsiccatus. (U. S. P.) Dried. Calcium 

 Sulphate, or Plaster of Paris, used for bandages. 



Barium. 



(Barium is not used in the metallic state.) 

 Babii Chlgeldum. Barium Chloride. BaClj. (Non-official.) 



Derivation. — Native barium sulphate ' is fused with 

 charcoal. The resulting sulphide is treated with hydro- 

 chloric acid. BaSO, + 20 = BaS + 2 CO,. BaS + 2 HOI 

 = BaCl, + H,S. 



Properties.' — Occurs in colorless, glistening rhombic 

 plates ; taste bitter and disagreable ; permanent in dry air ; 

 soluble in 2.5 parts of cold water; reaction neutral. 



Dose. — H., 3 ii.-iv.(8.-15.); intravenously, gr.xv.-xxx.(l.-2.) 



Action Internal. — Barium chloride is an intense irritant 

 if swallowed in considerable amount and in insufficient 

 dilution. Large medicinal doses stimulate the muscular 

 coat of the bowels and cause increased peristalsis and 



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