MATERIA MEDICA AND THERAPEUTICS. 121 



ZINCI CHLORIDUM—Zinc Chloride.— White deliques- 

 cent salt, wholly soluble in water, alcohol and ether. 



liquor zinci chloridi, aqueous solution of zinc chloride, 

 containing 50 per cent by weight of the salt. Make your own 

 solution ; chloride of zinc is used externally only. 



Actions. — Is caustic and escharotic, used full strength or in 

 a strong solution ; penetrates very deeply and causes deep slough- 

 ing ; an irritant and corrosive poison ; mild medicinal solutions 

 are antiseptic and astringent; is also disinfectant and deodorizer. 



Uses. — Can be used as a caustic when indicated; use with 

 caution, for granulations in chronic ulcers and foot-rot in sheep ; 

 to slough out all kinds of fistula, usually mixed with 1 or 2 parts 

 of flour made into a paste with water, two ounces in a pint of 

 water is injected as a caustic into fistulous tracts ; 2 to 3 per cent 

 solution or 2 to 4 drs. to the pint of water is used for ordinary 

 astringent purposes and as a parasiticide. 



For conjunctivitis : 



# Zinci chloridi, grs. ii. to iv. 



Atropiflae sulphatis, grs. iv. 

 Aq. destil., 3 viii. 



M. Sig. — Apply to the eye with soft sponge. 



It is also a safe wash for inflamed cornea. 



ZINCI SULPHAS — Sulphate of Zinc. — Occurs in colorless 

 crystals, which effloresce on exposure to air ; soluble 10 in 7 parts 

 water and in 3 parts of glycerin ; insoluble in alcohol. 



Dose. — Horse, y 2 to 1 1 / 2 drs. ; sheep, 10 to 20 grs. ; lambs, % 

 to 3 grs. ; cattle, 1 to 2 drs. ; calves, 10 to 30 grs. ; dogs, % to 5 

 grs. These doses are astringents and tonics; as an emetic for 

 dogs, 5 to 20 grs. 



Physiological Actions. — Irritant, emetic, astringent, anti- 

 septic and nerve tonic. Externally it is used as a stimulant, as- 

 tringent and antiseptic ; in dogs it is a prompt and efficient emetic, 

 causes no depression and acts both on the stomach and nerve 

 centers; poisonous or long continued large doses in horses dry 

 up the secretions, cause nausea, colic and efforts to vomit; dogs 

 cannot be poisoned by it as it causes vomiting. 



Uses. — As a tonic is inferior to iron ; chief use is externally 

 as an astringent; It is used in white lotion, (see lead) ; sometimes 

 used internally with opium to stop excessive sweating, in fre- 



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