LIME 155 



slight burns and intertrigo. Zinc oxide and starch (1 to 4) is, 

 however, a better preparation. Chalk is the most useful 

 antacid for diarrhoea accompanied by fermentation of the 

 intestinal contents, while its local astringent and protecting 

 influence assist in overcoming the trouble. It is especially 

 good for foals and calves given in flour gruel, and often 

 combinied with catechu, ginger and opium. The following 

 prescription is appropriate for dogs with diarrhoea : 



Tine, kino, tine, catechu co. and tine, opii camphor. Sa 

 5ss.; mistura cretse to make |iv. S. Teaspoonful every 

 three hours. A serviceable ball for horses with diarrhoea 

 contains: Creolin, chalk and ginger, aa §ss.; powdered 

 opium, 3 i. 



Calx. Lime. CaO. (U. S. & B. P.) 



Synonym. — Burned lime, quicklime, calcaria, calx viva, 

 calx usta, oxydum calcicum, E.; calcaria usta, P. G.; chaux, 

 chaux vive, Fr. ; kalk, gebrannter kalk, G. 



Derivation. — Prepared by burning white marble, oyster 

 shells, or the purest varieties of natural calcium carbonate, 

 to expel carbon dioxide. 



Properties. — Hard, white, or grayish-white masses, which 

 in contact with air gradually attract mtjisture and carbon 

 dioxide and fall to a white powder ; odorless ; of a sharp, 

 caustic taste. Eeaction intensely alkaline. Soluble in 

 about 750 parts of water ; insoluble in alcohol. 



PREPARATIONS. 



Liquor Calais. Solution of Lime. (U. S. & B. P.) 



A saturated, aqueous solution of calcium hydrate. 



Synonym.— huae water, solution of calcium hydrate, aqua calca- 

 riee ustse, aquacalcis, calcaria soluta, oxydum calcicum, aqua solutum, 

 E. ; aqua calcarise, P. G. ; eau (liquor) de chaux, Fr. ; kalkwasser, G. 



Derivation. — Dissolve lime in water. The percentage of calcium 

 hydrate [Ca (OH)^] varies with the temperature, being somewhat over 

 0.17 percent, at 15° C (59° F.), and diminishing as the temperature rises. 



Properties.— Ps.. clear, colorless liquid without odor, and having a 

 saline and feebly caustic taste. It absorbs carbon dioxide from the air, 

 so that a pellicle of calcium carbonate forms on the surface of the liquid. 

 Reaction strongly alkaline. 



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