ANIMAL DENTISTRY. 



223 



periostitis and dentitis augment the discharge, and change 

 its character into a fetid, purulent secretion, and the region 

 becomes painful to the touch. 



When opened by incision the cyst is found to contain a 

 tooth or two, which vary from the size of a hazel nut to that 

 of a full sized molar. The smaller ones are quite round, 







Fig. 150. 



Two Teeth Removed from the Squamous Temporal Bone of a Clydesdale 



Mare. 



while the larger ones assume the typical tooth dimensions. 



Treatment — The patient is placed in the lateral recum- 

 bent position, preferably under the influences of an anaesthe- 

 tic, A liberal incision is made over the tumefaction so as to 

 expose the hard object within. This will always be found to 

 be a tooth. When a part projects it can be extracted with 



