DISEASES AND INJURIES. 215 



Treatment. If the limbs are very painful, it may be necessary 

 to sponge them over with a solution of Goulard's extract of 

 lead one ounce to the pint of water ; or oxide of zinc ointment 

 may be applied to the inflamed surface. A soothing liniment is 

 composed of acetate of lead one ounce, olive oil one pint, water 

 one pint ; to be well rubbed up, and applied by means of a piece 

 of sponge. This liniment should be employed for some time 

 after the skin has recovered, if the weather is cold and wet. 



Surfeit. 



This consists of an eruption on different parts of the body 

 of small, hard lumps, generally accompanied with itching and 

 symptoms of indigestion the latter being probably the cause 

 of the skin disturbance. It usually disappears in the course 

 of two or three days, though sometimes it persists for two or 

 three weeks. 



Treatment. A dose of laxative medicine, such as an ounce 

 of powdered sulphur in a mash, which may be of bran or 

 linseed, or a pint of linseed oil, with an ounce of nitrate of 

 potass or carbonate of potass in the water given to drink once 

 a day, will usually effect a cure. Care should be taken with 

 the diet for some time. 



thrush. 



Thrush is a diseased condition of the frog, generally due to 

 its being cut away by the shoeing smith and thrown out of its 

 function. It is marked by a foul-smelling discharge from the 

 cleft of the frog, which becomes ragged and wastes, and may 

 in time become tender and cause lameness. 



Treatment. It may be necessary to poultice the foot after all 

 the loose portions of horn have been removed from the frog. 

 The cleft should be thoroughly cleaned out by tow, then a 

 little calomel ought to be pressed deeply into it, and maintained 

 there by a pledget of tow. Subsequently, pledgets of tow 

 smeared with Stockholm tar should be introduced into the 



