172 VETERINARY DENTAL SURGERT. 



Fig. 44 represents a 

 piece of necrosed bone 

 which was removed from 

 the jaw of a horse, the prop- 

 erty of Burt and Patterson, 

 A portion of necrosed , ., ,, 



bone removed from the b y the author, September 

 lower jaw of a horse. 2nd? l888< The following 



symptoms were presented when the horse was 

 brought to the infirmary: There was hanging of 

 the head, eyes partially closed, clear ropy saliva in 

 great quantities flowing from the mouth possessing 

 a disagreeable and offensive odor. 



On examining the mouth a large soft puffy 

 swelling was discovered just in front of the first left 

 lower molar. This swelling was soft, pulpy, clear 

 and watery-looking. When I endeavored to press 

 it between the fingers it gave way, a portion of it 

 being easily removed with the fingers. On coming 

 in contact with the bone the piece represented in the 

 cut was found loose. It had entirely exfoliated. 

 After its removal the bone was scraped and thor- 

 oughly cleansed with a strong solution of carbolic 

 acid and water. The dressings were continued daily. 

 Recovery took place very rapidly. 



The disease was caused by a common bit, the 

 driver having been in the habit of jerking on the 

 rein. All cases of a similar nature do not heal so 

 rapidly; some break out the second and even a third 



