ZINC. 273 



(1.) Oxide of Zinc. — This is a Tvhite powder, like 

 wheat flour, and is useful applied as a powder in greasy 

 heels and other sores, which discharge a sanious fluid 

 from them. Oxide of zinc is often used in the form of 

 an ointment mixed with lard, and an excellent ointment 

 is made by soap shaved down, and moistened with a little 

 water, and oxide of zinc added to it. This is a good 

 form to apply to greasy heels, and scratches on horscg, 

 which have to work every day: it keeps down irritation 

 and fever, and, consequently, prevents swelling of the 

 legs, and it is easily washed oSf on the horse coming into 

 the stable for the night. 



(2.) Carbonate of Zinc. — This is used under the old 

 name of calamine, either in the form of a powder or an 

 ointment. The ointment is made by adding four parts 

 of lard to one of calamine. Good for healing sores. 



(3.) Sulphate of Zinc. — This preparation of zinc 

 has already been described under the head of sulphate 

 of zinc, (which see.) 



(4.) Chloride of Zinc. — Butter of Zinc. — This, as 

 well as the other forms of zinc, is not used as an internal 

 medicine, except the sulphate, which is occasionally given 

 to the dog as an emetic. 



Chloride of zinc is a powerful disinfectant and deodo- 

 rizer, and is used in the healing of wounds and sores. 

 The solution is the usual form of using it. Two grains 

 of the chloride of zinc to the ounce of rain water, makes 

 a good eye wash. For ordinary sores, four to five grains 

 of the zinc to one ounce of rain water, is a good applica- 

 tion. One characteristic of the preparations of zinc 

 when applied to sores is, no proud flesh can or will arise 

 during their use. The chloride of zinc is used by some 

 veterinarians as a caustic, but for this purpose better 



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