DISEASES AFFECTING BONES, ETC. 

 recurrence occurs at variable intervals of time. 

 In order to detect the existence of bone- 

 spavin the best plan is to compare the 

 hocks by sense of touch, using the fingers 

 of the same hand for that purpose. The 

 slightest inequality can easily be detected in 

 this manner. 



BURSAL ENLARGEMENTS 



In connection with joints, tendons, &c., there 

 are certain structures known as bursae and tendon 

 sheaths, which serve the purpose of lubricating 

 the parts for the play of the tendons and the 

 joints. They sometimes become over-filled as 

 the result of some form of irritation, and when 

 such does occur, there is a soft, elastic swelling 

 which makes its appearance just above the 

 joint, giving the part a puffy feel, as though 

 the distended part were filled with air. Hunters 

 that have done a lot of work, or been pre- 

 maturely worked, not uncommonly develop 

 these bursal enlargements, and there may be 

 several of them, especially about the fetlock, 



171 



