6 
LECTURE VIL 
some of the Lizards. The young of such as de- 
posit hard or shelled eggs are commonly produced 
in ^iheir 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 throtigh a kind of tadpole 
state, and appear for some time in a form veffy 
different from that which they afterwards assume. 
But th6se particulars will be farther attended to 
as we pass through the different genera, ' 
The first division of the LimiEean Amphibia 
consists of but four distinct genera or sets, dom- 
prising all the kinds of Tortoises, Frogs Jahd^Li- 
zards, one particular kind of which, on account 
of its very peculiar form, constitutes a distinct 
o-enus from the rest. These four genera are en- 
tilled Testiido, Rami, Draco, and Lacertct, 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 rhust be 
confessed to be by no means an unscientific or 
