APPEND: $33 



there arc only live or tii in each. The teeth arc 

 not di visible into different classes, as in quadrupeds, 

 hut air all pointed teeth, and are comnu>.,ly a 

 good deal similar. Lach tu.,i i, a doul- 

 one point bcinyf fastened into tlie gum, the other 

 projecting: they are however not all of exactly 

 ihape. In some species of IWpoise the fang 

 is flattened, and thin at its extremity : in the 

 Spermaceti \\ hale the- body of the tooth is a little 

 curved towards the hack part of the mouth; as is 

 also the case \vith some others. The teeth are 

 composed of animal substance and earth, similar 

 to the bony part of the teeth in quadruped* 



It would appear that these animals do not shed 

 their teeth, nor have they new ones formed similar 

 to the old, as i> the case with most other quadrupeds, 

 and aNo \\ith the Alligator. I have never been 

 able to detect young teeth under the roots of the 

 old ; and indeed the situation in which they arc 

 formed makes it in some degree impossible, if 

 the young teeth follow the same rule in growing 

 with the original ones, as they probably do in 



-t animals. 



Some genera of this tribe have another mode of 

 catching their food, and retaining it till it isswal- 

 d ; which is by means of the substance called 

 debone. Of this there arc two kinds kno 

 one very large ; probably from the largest of all 

 Whale* yet disc. : the other from a smaller 



species. The whalebone, which is placed on the 

 inside of the mouth, and attached to the upper jaw, 



v. n. P. ir. 3j 



