44 CLASS REPTILIA. 



treated on, in an account of fossil reptiles; and, in the 

 next place, all observations of that kind, which may be neces- 

 sary in addition to the text of Cuvier, will come with more 

 propriety under the particular divisions to which they are 

 applicable.* 



* M. de Blainvlllej considering, according to anatomical observa- 

 tions, that all the reptiles which are not aquatic, have an organization 

 approaching to that of birds, while the others in their conformation more 

 or less resemble fishes, has divided this class into two sub-classes, the first 

 of which he names Obnithoides, the second, Ichthyoides. He has also 

 made some changes in the order of the subdivisions ; but his arrangement, 

 though very scientific, is perhaps not so easy of general application as that 

 of our author. 



