DISEASES OF HORSES AND CATTLE. 281 



fistula. The wood was removed and it healed in 

 a few weeks with very little treatment. A little of 

 the following, acetate of lead half an ounce, 

 sulphate of zinc half an ounce, water one quart, 

 was iujected once daily. I give this as an illustra- 

 tion, and I have seen many cases resembling it. 

 If a deep sore does not heal in a reasonable time, 

 it should be examined with a probe to find the 

 cause and remove it if possible. If nothing can be 

 detected in the wound, treat as recommended for 

 fistula of the withers. 



