ii6 THE ORIGIN OF MAN 



over most of his body. All his implements were 

 carried and used in the hand, without handles, and 

 he had no bow and arrow. He had no home. The 

 climate was still so good that the rhinoceros and 

 hippopotamus and elephant wandered over Britain 

 with him. He lived in family groups, not social 

 groups. He was still subject only to the very slow 

 and cumbrous evolutionary method of natiiral selec- 

 tion — the struggle for food and life and survival of the 

 fittest. Had he remained subject only to this law of 

 progress, we might all to-day be at the level of the 

 Zulu. But natural selection now took on its grimmest 

 form, an Ice Age, and — something happened. 



