PRIMEVAL MAN 215 



of wholly different blood. Roughly parallel 

 with this was a corresponding development in 

 cultural type. Probably from the earliest times, 

 and certainly in late times, development or 

 change in physical type was often wholly un- 

 related to development or change in culture. 

 Sometimes the cultural change was an autoch- 

 thonous development. Sometimes it was due 

 to a more or less complete change in blood, 

 owing to the immigration of a strong alien type 

 of humanity. Sometimes it was due to the 

 adoption of an alien culture. 



Many good observers nowadays, judging 

 from the facts at present accessible, are in- 

 clined to think that the American Indian stocks 

 were the first human stocks that peopled the 

 western hemisphere, that they are by blood 

 nearest of kin to certain race-elements still 

 existing in northeastern Asia — representing 

 the only inhabitants of northeastern x\sia when 

 man first penetrated from there to north- 

 western America — and that more remotely 

 they may be kin to certain late Palaeolithic men 

 of Europe. But much of the American Indian 

 culture was essentially a Neolithic culture, 

 seemingly from the beginning. In places — 

 Peru, Maya-land, the Mexican plateau — it at 

 times developed into a civilization equally 



