ZOOLOGY. 



productions; their imk^ are used for the same purposes 

 as Ivorj' . 



Order III. FERJE. 



Front teeth conical, usiially six in eacli jaw ; tuslcs longer 

 tlian the teeth ; grinders with conical projections ; feet fur- 

 nished with subuhite daises. There are eleven genera in this 

 order, some of which feed on other animals and dead car* 

 casses, others on worms, insects and vegetables. 



1. Phoca. Seal. Front teeth acute, the upper six parallelj 



the outer ones larger ; the lower six parallel, distinct, 

 equal, obtuse; tusks twice as long as the teeth, acute, 

 large, solitary ; the upper ones remote from the cutting- 

 teeth, and the lov/er ones from the grinders ; grinders 

 five above, six below, narrow, tricuspidate ; ears 

 wanting ; hind-feet finned. 



This genus abounds on rocky shores and inlets from the sea^ 

 and are most numerous in northnrn countries : their food is 

 fish, molusca and other marine produce. A great quantity 

 of oil is obtained from their bodies , and their skins are in 

 considerable request for various domestic purposes. 



2. Cam's. Dog. Upper front teeth six, the lateral ones 



longer, distant ; the intermediate ones lobate in the 



lower six, the lateral ones lobate ; tusks solitary, 



incurvate ; grinders six or seven, or more in some 

 species than in others. 



The roanners and habits of th^ Dog are too well known 



