72 



DISEASES OF THE JAWS. 



tumtely very rare. In the ox also a remarkable condition 

 is represented by Pigs. 35, 36, due to abscess in the jaw, 

 whereby the bone has been destroyed and the teeth dis- 

 placed : 



Fig. 35. 



In young cattle there is a somewhat frequent disease 

 termed by some veterinary writers ' Osteo sarcoma/ ' Spina 

 ventosa/ and other inappropriate names. The only term I 

 can give to it is fibro-plastic degeneration of bone. There is 



