124 THE ARTISTIC ANATOMY OF ANIMALS 



We also note that the incisors are edged, the canines are 

 pointed, and that the molars, cubical in shape, have their 

 surface of contact provided with tubercles. 



The teeth of the cat are thirty in number ; they are thus 

 arranged : 



4m. ic. 3». I 3*. ic. 4m. 

 3w. IC. 3?. I 3i. IC. 3m. 



Those of the dog number forty-two : 



30. 



6m. IC. 3z. 



ym. IC. 3^. 



3*. IC. . 6m. 

 3^'. IC. ym. 



= 42. 



In these animals, the incisors, such as are not damaged by 

 use, are furnished, on the free border of their crown, with 

 three tubercles, of which one, the median, is more developed 

 than those which are situated laterally. We denote these teeth, 

 commencing with those nearest the median line, by the names 

 central incisors or nippers, intermediate and corner incisors. 

 The canines, or fangs, are long and conical; they are curved 

 backwards and outwards. The upper canines, which are 

 larger than those of the lower jaw, are separated from the most 

 external of the incisors {cornier) by an interval in which the 

 canines of the lower jaw are received. The lower canines, on 

 the other hand, are in contact with the neighbouring incisors, 

 and are each separated from the first molar which succeeds 

 them by a wider interval than that which is situated between 

 the corresponding teeth in the upper jaw. 



The molars differ essentially from the teeth of the same 

 class in the human species. Their crown terminates in a 

 cutting border bristling with sharp-pointed projections ; this 

 formation indicates that these teeth are principally designed 

 for tearing. During the movement of raising the lower jaw, 

 which is so energetic in the camivora, they act, indeed, in 

 the same manner as the two blades of a pair of scissors. The 

 largest molars are : in the dog, the fourth of the upper jaw, 

 and the fifth in the opposite one ; in the cat, the third both 

 above and below. 



