280 



COMPARATIVE ANATOMY -OF THE TEETH. 



The dental formula is, incisors one, canine one, bicuspids 

 two, to the upper jaw, on either side ; and to the lower, 

 incisors two,, canine one, bicuspids three. The bats which 

 live on fruit have thirty-four teeth. Their dental formula 

 is, to the upper jaw, on either side, incisors two, canine 

 one, bicuspids two, molars three; in the lower, incisors 

 two, canine one, bicuspids three, molars three. 



CARNTVORA. Animals of this order live entirely on one 

 kind of food, i. e. flesh; and their dental system being de- 

 signed not only to masticate, but also to obtain, seize, and 

 kill their prej, their teeth are much more extensive than 

 in man. 



The different genera present variations from the regular 

 type as established in the feline or cat tribe. 



FIG. 76. 



Among the whole order there are found to be six in- 

 cisors in each jaw, with few exceptions. The canines are 

 never absent, are largely developed, and have long, eoni- 



FIG. 76 represents the deciduous and permanent teeth of the dog. 2 3 4 d 

 Deciduous molars of the upper and lower jaw. 2 3 4 p Permanent molars. 

 d c Deciduous canine of both jaws, d i Deciduous incisors of both jaws, 

 i Permanent incisors. 2 m 3 m Tubercular molars. 



