6 LECTURE VII. 



some of the Lizards. The young of such as de- 

 posit hard or shelled eggs are commonly produced 

 in their perfect or complete form, or differing 

 from the parent animal in size alone; but the 

 young of many of those which are produced from 

 spawn or soft eggs pass through a kind of tadpole 

 state, and appear for some time in a form very 

 different from that which they afterwards assume. 

 But these particulars will be farther attended to 

 as we pass through the different genera. 



The first division of the Linnaean Amphibia 

 consists of but four distinct genera or sets, com- 

 prising all the kinds of Tortoises, Frogs and Li- 

 zards, one particular kind of which, on account 

 of its very peculiar form, constitutes a distinct 

 genus from the rest. These four genera are en- 

 titled Testudo, Rana, Draco, and Lacerta, or Tor- 

 toise, Frog, Dragon, and Lizard. These animals 

 constitute the four-footed Amphibia, and are what 

 the older writers on natural history as well as 

 some of the moderns, have called Oviparous Qua- 

 drupeds. Amongst others, the Count de Cepede, 

 in his continuation of Buffon's natural history, 

 chooses to call them by this title, and it must be 

 confessed to be by no means an unscientific oy 



