OF REPTILES. 331 
pears on the plain skin between the grains. This splen- 
did colouring is usually distributed in blotches, between 
which the grains appear mixed with blue and greenish, 
and the fiat skin is reddish. At other times the whole 
skin seems of a beautiful green, spotted with yellow* 
When touched, it often becomes suddenly spotted all 
over with pretty large blackish blotches, mixed with some 
green; but it is now thoroughly ascertained, that it by 
no means assumes the colours of the bodies which are 
around it; that those which it accidentally presents are 
not extended over the whole of its body, as was formerly 
believed. 
