DISEASES OF HORSES AND CATTLE. 



227 



ness, and in the majority of cases it can be re- 

 moved by the blisters, that it is safer not to 

 operate. 



Bone-Spavin. — Bone-spavin may be defined as 

 an exostosis (growth of bone) on the inner and 



PLATE 5. NATURAL HOCK-JOINT. 



lower part of the hock, arising from inflammation 

 of the small bones of the hock terminating gen- 

 erally in anchylosis of one or more of the gliding 

 joints of the hock, according to Prof. Williams. 

 The reason why spavin appears on the inside of the 

 hock and seldom on the outside can be explained. 



