RBSTOKATIVB AGENTS. 45 



Massa Ferri Carbonatis — Vallet's mass, is a very- 

 suitable prepara,tion for the smaller domesticated 

 animals. Dose for dog, gr. i.-v. It is prepared by- 

 beating into a mass : Ferrous sulphate 100, sodium 

 carbonate 110, honey 36, sugar 25, syrup and -water a 

 sufficient quantity to give proper consistence. 



BisMUTHUM— Bismuth. 



Chief Preparations. — Bismuthi Subcarbonas — 

 bismuth subcarbonate ; Bismuthi Subnitras — bis- 

 muth subnitrate. Doses: H., 3 i.-iij. ; D., gr. ij.-x. 

 These salts of bismuth are heavy -white po-wders, in- 

 soluble in water or alcohol, and nearly go in the 

 gastric juice. They act as local sedatives and astrin- 

 gents to the stomach and intestines, relieving irrita- 

 tion in dyspepsia and vomiting. They are frequently 

 given in diarrhoea and dysentery, combined with tan- 

 nin, opium, or catechu. 



Bismuthi Subiodidum — bismuth subiodide, a 

 heavy, dark-red, insoluble powder, with very power- 

 ful antiseptic and stimulant properties, is used only 

 externally as a dressing for wounds, ulcers, etc. 



Arsbnium or Arsenicum — Arsenic. 



Chief Preparations. — Acidum Arseniosum, 

 Arsenious Acid, White Arsenic — a dull white pow- 

 der, specific gravity 3.8, colorless, tasteless; sprinkled 

 on red-hot coals it gives off a garlicky odor; com- 

 pletely volatilizes at 400° F. Sparingly soluble in 

 alcohol and water (1:33), but its solubility is in- 



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