MONKEYS 
7 
is far greater in their infancy than after they have attained to 
maturity. They are tailless, and habitually assume a semi-erect 
position, using their disproportionally long arms to balance 
themselves by resting their knuckles on the ground. Their great 
toes are opposable, like thumbs, to the other toes, so as to form a 
second pair of hands, on account of which the term Quadrwnana 
(four-handed) has been applied to them and the other Monkeys. 
Several specimens of the Gorilla {AnthropopUhems gonlla) of 
various ages are exhibited in the separate Case in the first recess on 
Fig. 4. 
Gorilla. 
