Evolution 



But the change is just what we should devise in order to make the 

 foot stronger for propelling the body on the ground. Moreover, 

 the difference is more obvious than fundamental, and it is well 



FIG. 137. Brains of (/ r , Cercopithecus (Eastern monkey) ; (//) Chimpanzee ; 

 (/,) Australian Bushman ; (J/) European. 



known that in armless persons, who develop the possibilities of 

 their feet, the latter members can still be turned into wonderfully 

 efficient ' hands.' 



In brain development the anthropoids are, as already 

 mentioned, greatly inferior to man ; in the Gorilla, the largest- 



148 



