MAMMIFEROUS ANIMALS. 407 



locomotive agents, and in the element in 

 which they live, that a difference may be said to 

 exist. 



The animals which belong to this order, are of 

 four kinds : namely, the Monodon, Narwhal, or 

 Sea Unicorn; the Balcena, or common Whale; the 

 Physeter, Cachalot, or Sperma Ceti Whale ; and 

 the Dolphin Tribe, including the common Dol- 

 phin, * the Grampus, and the I'nrpois* 1 . Of 

 these, I propose to confine my history to the three 

 first, as being the most interesting. 



The Monodon, Narwhal, or, (as it has been 

 familiary termed) the Sea Unicorn, is chiefly to be 

 found in unfrozen portions of the Arctic Ocean, 

 where it is occasionally to be seen in herds of 

 great numbers not unfrequently followed by the 

 larger Whales. 



This Animal, which from the mouth to the tail, 

 rarely exceeds thirty but is more frequently 

 below twenty feet, in length, is to be distinguished 

 from all the other Genera, by a curious piece of 

 mechanism, consisting of an enormous tonth or 

 tusk) of great solidity and hardness (in a few of 



* The Dolphin here alluded to, which is nearly ten feet in 

 length, and is to be met with in the seas of all latitudes, is 

 very different from the Tropical fish to which seamen have given 

 that appellation. The latter, Linnaeus has denominated Cory' 

 phcena Hippurus. It is distinguished by the variety and beauty 

 of its^colours while near the surface of the water, and when 

 dying; and by the ingenuity it displays in pursuit of the flying 

 Fish, its ordinary food. 



