ZOOLOGY. 



43 



spiral, extending straight forwards ; spiracle on the fore 

 and upper parts of the head. 



2, Balcena. Whale. Teeth wanting, instead of which are 

 horny lamince in the upper jaw ; spiracle with a double 

 opening on the top of the head. 



S. Physeter. Cachalot. Teeth in the lower jaw, none 

 in the upper jaw ; spiracle on the head or snout, 



4. Delphinus. Dolphin. Teeth in both jaws ; spiracle on 

 the head. 



All these genera are inhabitants of the ocean, and princi- 

 pally abound in the Norllisrn Seas, where they associate in 

 great numbers ; the first genus is only yaluable on account of 

 its teeth, which are of equal valu- with the finest Ivory. The 

 Whale affords an immense quantity of oil, the lioniy laminae 

 with which the interior of toe month is furnished, is the 

 article generally called fVhalelone^ and on account of [,he?e 

 two productions, the Whale is an object of verj^ considerable 

 importance, as the eatchii!^ of them, and the preparation of 

 the oil, affords employment to a verj^ cor siderable number 

 of our population. The two last genera botb produce oil, 

 but neither of so good a quality, nor in the like abundance 

 with the Whale. 



The greater part of the foregoin."; genera being rendered 

 subservient to the uses, comforis, or convenience of Man- 

 kind ; and being so widely au l s;ererary dispersed, it is 

 particularly desirable to oblain information relaiive to t'iO 



