J50 LECTURE VII. 



length. The eyes are large and globular, with a 

 very small opening in the skin, so that the ball of 

 the eye can only be seen externally: the animal 

 can direct one eye upwards and the other down- 

 wards at pleasure, so great is its command over 

 these organs. The tongue is extremely long, ex- 

 tensile at pleasure, like that of a Woodpecker, 

 and furnished at the end with a broad glutinous 

 tip. With this it catches insects, darting the tongue 

 upon them, and suddenly retracting it, like the 

 quadrupeds of the genera of Manis and Myrme- 

 cophaga. The Chameleon can support a very long 

 abstinence, and will even bear to be confined 

 many weeks together without any visible food, 

 and hence the old notion of its living on air. The 

 best figure of the Chamaeleon is that given in 

 Mr. Miller's miscellaneous plates of Natural 

 History. 



There are two or three other species of Cha- 

 meleon which have only been fully described of 

 late years. 



I proceed to the last division of the Lizards, 

 containing the Salamanders, or Water-Newts. In 

 their whole economy these Lizards are strongly 

 allied to Frogs, inhabiting the water, and pro- 



