so 
LECTURE Vn. 
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 j like that of a Woodpecker, 
and furnished at the end with a broad glutinous 
tip. With this it catches insects, darting the tongue 
npon them, and suddenly retracting it, like the 
quadrupeds of the genera of Manis and Myrme- 
cophaga. The Chamseleon 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 Chamasleon is that given in 
Mr. Miller’s miscellaneous plates of Natural 
History. 
There are two or three other species of Cha- 
maeleon 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 \vater, and pro- 
