ZOOLOGY. 25 



firodactioiis ; their tusks are used for the same purposei 

 ts Ivory. 



Order III. FERM. 



Front teeth conical, usually six in each jaw ; tusks longer 

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

 nished with subulate dazss. 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 parallel, 



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 lower ones from the grinders ; grinders 

 five above, six below, narrovv, tricuspidate j ears 

 wanting ; hind-feet finned. 



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

 and are most numerous in northern countries : their food is 

 fish, roolusca 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. Cams, Dog. Upper front teeth six, the lateral ones 



longer, distant ; the intermediate ones lobate in the 



lower six, the lateral ones lobate ; tusjcs solitary, 



incurvate ; grinders six or seven, or more in soma 

 species than in others. 



The manners and habits of the Dog are too well knowfi 



