CiiAi'TKK x.w'ir 



THE BRAIN OF PREHISTORIC MAN 



A Survey of I he Psychological Faundalions nf Ihnndn Prniiress 



"^111: luinian laiiiilv, atx'orchiifi to most conscrxatiw authorit\, lias 

 been m cxistfiict' more than a liall million \eais. During' all tiu' vast 

 cvn of Plc'istoc'ciu' tinu\ w ith its rt'ciirmit glacial ions and mtciAals ol 

 warmth, man's brain stcadii\' <i;re\v. This t^rowth at lirst was slow and 

 irregular. Later it became so tlecisive as to makt' ci'rt'bral development one 

 ot the most strikini;; features m human exoliitioii. The brain slow 1\ increased 

 in \olume. It acc|uired mueh reliiu'inenl in maii\ structural details. Its 

 newer parts became more limhl\ specialized. As a result ol tlu- exolutioiial 

 process tht' brain ol modern man is a lar more eliicient organ than that 

 possessed b\ the tvirliest ol human kind. 



It is i^robable that man\ distinct species ol prehistoric man inhabited 

 the earth. Several distinct races hiwv already bct'ii identilied by means ol los- 

 sih/.ed human bones. The racial dillcrentiations established in this manner 

 have l)een utilized to reconstruct the outward appearance ol these prehistoric 

 peoples, in tlu- reconstructions ol Prolessor McCregoi', the dilU-ri'iiccs are 

 Striking (p. 732). The ape-like appearance ol J-'it heeanthropus crectus 

 aflords some reasons lor calling this earliest known mcmbt'r ol our laniilx" 

 circle the Ape-man. The old man ol Cro-Magnon, on the other hand, jjossesses 

 a nobilitx' ol expression which in itsell seems to justilx his characterization 

 as the "Paleolithic Creek." Bilweeii these two extrt'ines, tiu' iW'andcrt lial 

 and l-*iltdown nun ari' interiiudiate stages. How these ancient |X'ople felt, 

 thought and liwd is a matter ol importance, concerning which the bram 

 has much to reveal. This re\clation is most signilicant, because oi its dis- 

 closures regarding the cult ural progress and possibilities of mankind. 



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