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VERTEBRATA 



ilia gorilla) is the largest, fiercest, and most manlike of the 

 apes. It is the only one which walks erect without being 

 taught, and in its home land along the equator of Africa 

 it is said to spend much time on the ground. It does not 

 thrive in captivity. Only one live specimen has ever 

 arrived in the United States. 



The chimpanzee, half as large as the gorilla, has brain, 

 face, ears, and hands more manlike than those of any other 

 ape, and is the most intelligent of the group. Sally of the 



FIG. 319. Photograph of a chimpanzee. 



London Zoo could count up to five. Its home is in the 

 dense forests of equatorial Africa. The orang-outang, 

 about two thirds as large as the gorilla, may be distinguished 

 from the black-haired chimpanzee by its reddish hair, 



