VETERINART DENTAL SURGERY. 25 



of enamel. In the horse tribe as a rule canine teeth 

 are only developed in the male; if they exist in the 

 female they are rudimentary. 



The molars or grinders are 24, 6 on each side, 

 above and below. They are numbered from before 

 backwards (Fig. 32), and like the incisors those of 

 the upper jaw are the largest. A molar tooth is 

 constructed on the same general plan as an incisor, 

 but the contour of the various parts is much more 

 irregular. There are generally two inf undibula con- 

 taining a large quantity of cementum, a layer of 

 which also covers a greater part of the external 

 enamel. (Fig. y-AA). 



The crown of the upper molars is somewhat cubic; 

 their external surface presents two grooves running 

 from table to root, the anterior being the deeper. 

 The crown of the lower molars is narrower and 

 longer than that of the upper 

 ones and has only one groove. 

 The inner surface of the up- 

 per molars is not so deep as the 

 outer, while the inner surface of 

 the lower ones is deeper. The 

 F two lower rows diverge 



TRANSVERSE SECTION OF towards the back of the mouth, 

 A HORSE'S UPPER 

 MOLAR TOOTH. while the two upper rows are 



a, external cement; h ra ther convex externally, 

 external enamel; c, den- 

 tine; d, internal enamel; " A horse may have super- 

 ,internal crusta-petrosa. 

 Chauveau, numerary molar or wolf teeth; 



