140 



THE MAMMALIA. 



blauce to those of the Carnivora. They are adapted 



not only for chewing but 

 for crunching food. Their 

 dentition is, in fact, that 

 of an animal living upon a 

 mixed form of food one of 

 the Ornnivora. 



In the structure of its 

 foot the Pig is very closely 

 allied to the Peccary, which 

 we have already mentioned 

 as an example of the so- 

 called adaptive animal form. 

 However, the Peccary has 

 advanced farther in the 

 adaptation of its tarsal bones 

 to the two principal toes 

 than the Pig, in whose case 

 both the second and the fifth 

 toe still almost wholly claim 

 the support of the carpals, 

 without thereby accomplish- 

 ing anything particular in 

 FIG. 16. Right Fore-foot the way of standing and 



of the Pig. 



running. From the relation 



between the carpals and rnetacarpals it is evident 



