400 HOUSE AND CATTLE MEDICINIS, 



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

 wheat-flour, and is useful when 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. An excellent ointment 

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

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

 good form for greasy heels and scratches on horses that 

 have to work every day. It keeps down irritation and 

 fever, prevents swelling of the legs, and is easily washed 

 off 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. It is 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 an 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 application. 

 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 caustics, and cheaper 

 ones, will be found elsewhere described. 



