52 SYNOPSIS OF VETERINARY 



the surrounding space to prevent scalding the healthy parts and 

 removing the hair where it runs down. 



ACIDUM HYDROCHLORICUM— Hydrochloric Acid.— 

 Muriatic Acid is the common name, also known as spirit of salt. 

 — Properties: a liquid composed of 31.9 per cent absolue hydro- 

 chloric acid, 68.1 1 per cent water. It is a fuming colorless liquid 

 of a pungent suffocating odor, an intensely acid taste and reaction. 



Official Preparations.- — 



ACIDUM HYDROCHLORICUM DILUTUM 10 per cent 

 strength. 



ACIDUM NITRO-HYDROCHLORICUM OR AQUA RE- 

 GIA, full strength is composed of nitric acid 180 parts, and hydro- 

 chloric acid 820 parts. 



ACIDUM NITRO-HYDROCHLORICUM DILUTUM 

 or Dilute Nitro-Muriatic Acid has 40 parts of nitric acid, 180 

 parts hydrochloric acid and 780 parts of distilled water. 



NITRO-MURIATIC ACID DILUTE, is a colorless or 

 faintly yellow liquid, odorless or having a faint odor of chlorine, 

 very acid taste and reaction. Dose of the full strength is y 2 to 2 

 drs. The dilute preparation's are safer to handle. 



Dose of acidum hydrochloricum dilutum. — Horse, 2 drs. to 1 

 oz., average ]/ 2 oz. ; cattle, 3 drs. to iy 2 ozs. ; pigs, 10 to 30 Ms. ; 

 dogs, 3 to 20 Ms. 



Dose of dilute nitro-hydrochloric acid. — Horse, 2 to 4 drs. ; 

 cattle, 3 to 6 drs. ; pigs, 10 to 20 Ms. ; dogs, 3 to 10 Ms. 



These acids should be diluted with 40 to 50 times their bulk 

 with water. 



Physiological Actions. — Corrosive and irritant in concen- 

 trated doses, in medicinal doses, astringent, antiseptic, tonic, and 

 antidote for poisoning by alkalies. They stimulate the appetite 

 and digestion. They are excreted with the urine, diminishing 

 its alkalinity. Topically, these acids are caustic. 



The effect of hydrochloric acid on the secretions differs from 

 that of sulphuric and nitric acids. Sulphuric acid checks the 

 secretions, while nitric acid increases it, but hydrochloric acid 

 acts between the two. Their tonic effects and antidotes are the 

 same. 



Therapy.— HYDROCHLORIC ACID is used in sore throat. 



