VE T ERIN ART DENTAL S URGER 2 '. 73 



teeth in the living animal, although I have seen its 

 effects on those teeth in one skeleton. 



FIG. 18. 



FIRST LOWER MOLAR SHOW- 

 ING EFFECTS OF CARIES. 

 <i. Wire passing through 

 cavity of tooth, b. Removal 

 of dentine, the result of car- 

 ies, c. Inferior opening of a. 

 Fig. 20. d. Caries of the 

 fang. 



FIG. 19. 

 SAME TOOTH OPPOSITE 



SIDE. 



a. Wire drawn through 

 cavity extending to b, c. 

 Continuation of same cav- 

 ity. 



JOt. 



The attack and progress 

 of caries are much modified by 

 the constitution of the teeth. 

 These may be defective either 

 originally or accidentally. 

 Original defectiveness extends 

 to all the teeth of the same 

 individual, due to a constitu- 



TABLE SURFACE OF TOOTH . 



REPRESENTED IN FIG- tlonal predisposition, whilst 



URES 18 AND 19. accidental defectiveness exists 



a, , Opening of cavi- 

 ties on table surface. only as to some of the teeth in 



FIG. 20. 



