212 



THE STOCK OWNER S ADVISEE. 



absorb the callus enlargement. It may be necessary to use the 

 actual cautery. 



BONE SPAVIN. 



A bone spavin may be defined to be an exostosis on the inner 

 and lower part of the hock, arising from inflammation of the 

 joint, terminating generally in anchylosis of one or more of the 



Fig. 54— Bone Spavin. 



gliding joints of the hock. Bone spavin is A-ery rarely found on 

 the outer side of the hock. It arises from causes that are heredi- 

 tary or constitutional and local. The hereditary dis^^osition to 

 bone spavin is beyond a doubt, being well known to breeders of 

 horses. This predisposition is not a peculiarity of conformation, 

 as many breeds with very fine hocks often become unsound from 

 spavin. 



The local exciting causes of spavin are sprains of the liga- 



