MAN'S PLACE IN NATURE 295 



The legs in man are better developed and the hip bones 

 are large enough to support the body in an upright 

 position. The brain is much more developed and much 



Fig. 145. Chimpanzees. 



larger, weighing in the average man two or three times 

 that of the gorilla. Because of the greater develop- 

 ment of the brain, the modes of life and the other 

 activities resulting from a high grade of intelligence 

 clearly separate man from the lower primates. 



Age and races of man. The first men, undoubtedly, 

 lived much as the lower animals now live. They wan- 

 dered about from place to place living upon whatever 

 they could kill. Gradually they began to use imple- 

 ments, the first of which were made of stone. These 

 implements were at first used as weapons to aid in the 

 capture of prey for food. As civilization advanced, 

 implements were made of bone, and then later, copper,, 

 bronze, and iron. Finally man began to domesticate 

 animals, to cultivate the fields, and to have a fixed 



