112 SYNOPSIS Of VETERINARY 



Prescription for blister: 



R- Pulv. canth. 



Hydrarg. iod. rubr. aa., 3 ij. 



Adeps, 3 ii j • 



M. Sig. — Rub in for io to 15 minutes. 



Resolvent Liniment. 



R- Hydrarg. Iod Rubri 3 ij — iij. 



Potas. Iod. 3 ss. — 3 vj. 



Aq. qs. ad. Oj. 

 M. Sig. — Apply twice daily. 



HYDRARGYRI CHLORIDUM MITE— Mild Mercurous 

 Chloride. 



Synonyms, — Hydrargyrum Sub-Chloridum; Hydrargyrum 

 Sub-Muriate; Calomel. — Mild chloride of mercury ; in writing a 

 prescription for calomel, Hydrarg. Chlor. Mitis underline the 

 word Mitis, to avoid errors. 



Character. — A dull heavy insoluble, nearly tasteless powder. 



Dose. — Average dose for horse % to 2 drs. ; cattle, 2 to 4 

 drs. ; sheep and pigs, 5 to 30 grs. ; dogs, ]/$ to 10 grs. Where 

 calomel is used as an alterative, small repeated doses are com- 

 bined with opii to prevent its too rapid removal from the bowels. 

 As a purgative is usually combined with bicarbonate of soda. 



Actions. — Laxative in small repeated doses ; cathartic in 

 large doses ; full doses irritate the stomach and cause emesis 

 (vomiting) in man and dogs. Calomel is a diuretic, seems to 

 stimulate the urea functions of the. liver ; does not directly in- 

 crease secretion of bile, but removes it from the duodenum, and 

 in this way reflexly increases its secretion by the liver. Repeated 

 doses may cause mercurialism. Alterative when combined with 

 opii, laxative in small repeated doses, cathartic in large doses. 



Summary. — Diuretic, alterative, laxative, cathartic and ver- 

 mifuge. 



Externally. — Calomel is a desiccant, stimulant, antiparasitic 

 and antiseptic. 



Uses. — Gastric irritation, influenza, where there is a yellow- 

 ness of the mucous membrane, liver disorder. 



It is useful as an adjunct to aloes or other purgative. As a 

 laxative or purgative for horses, give aloes and calomel; cattle, 

 calomel, Epsom or Glauber's salts ; dogs, calomel with resin of 

 jalap. 



