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tirely upon shell-fish, no other teeth would 

 be required than such as those of the Walrus, 

 simply operating as two hammers -, if his 

 food had been the flesh of quadrupeds, his 

 teeth would have been similar to those of the 

 Tyger or Lyon ; but since we actually find 

 them to have the powers of both combined, is 

 it unreasonable to believe that his food might 

 have been shell-fish, turtles, fish, or such 

 other animals as might be found in or near 

 lakes ? This is the only kind of food he could 

 conveniently procure, and surely none could 

 be required of a more succulent nature. It is 

 very certain, from the peculiar manner in 

 which the teeth are worn, that the food was 

 hard, and of a small size, because the strongly 

 enamelled protuberances are scarcely ever 

 found equally worn off, but only on one side. 

 This observation can only be made on the teeth 

 of eld animals -, but it is sufficiently apparent 

 in the skeleton here, and very remarkable in 

 that at Philadelphia. Whatever v^^as the food, 

 after it was taken into the mouth, the tongue 

 has performed its most natural function, and 

 pushed the substance to be crushed against the 

 cheek, so that the pressure of the tongue and 



