A SPKAIN OK STKAIN. 



211 



lowed by a half ounce of nitrate of potash, in a drench. Cold 

 applications should be applied to the enlargement. Zinc sul- 

 phate, six drachms, to lead acetate one ounce in a quart of 

 water may be used. Pressure should be applied by means of a 

 bandage properly adjusted. A stimulant consisting of iodine 

 and turpentine may be applied to the enlargement. In some few 

 cases the actual cautery may be employed. Bog spavin is best 

 treated in the winter. 



SPRUNG HOCK. 



This is an enlarged and inflamed condition of the tarsus gen- 

 erally, involving the structures of the whole articulation, arising 

 from severe sprain or injury. 



Fig. 53— Sprung Hock. 



Treatment. — The special treatment is the use of the slings 

 and the ammoniacal liniment. After the acute symptoms have 

 subsided the biniodide of mercury ointment shouhl l)e used to 



