THE BRAIN 01 PRHIIISTOKIC MAN 915 



unusually prominent. In cliaractcr thcv rcscnihlf these structures in the 

 human l^ram. 



B\ all the signs of his frontal lobe. Rhodesian man must have been a 

 very humble sort of human. Nothing in this region of his brain denotes 

 an\- approach to the attainments of Homo sapiens. The frontal area bears 

 man\ marks of his smiian retentions, although it also shows that his cerebral 

 capacities liad already transcended the anthropoid hmits and were last 

 carrying him toward broader planes ol human I'xperience. It would be sur- 

 prising, however, to liiul him capal)l(.' ol an\ advanced handicralt or produc- 

 tive of any such culture as characterized the Neanderthal, t'\eii in his early 

 periods ot progress. His must have been a precarious lot, pitted as he was 

 against the formidable mammals of the African wilds. But even in this 

 jeopardy his JM-ain had not left him t'lUirely destitute for the exigencies ot 

 such competition. A more facile association of ideas brought greater wariness 

 to increase his contrnances and to amplil\ his strategies. He began to have a 

 real panoramic continuity in his apperceptive \\iv. Past e.\|ierience formed 

 the conscious background ol his daily existence and entered into his plans 

 lor the luture. II such adxances as these ma\' reasonably be attributed to his 

 frontal lobe, there is e\ ideiice of a still greater acKantage j)ossessed by 

 Rhodesian man by virtue ol de\-elopnu'nt in this region of his brain. His 

 Broca's area indicates that he had acc|uired the j^owers of speech. Cooperative 

 preparation and combined ellort w ere thus made possible. The experience not 

 of one iiidi\ iduai but ol man\ created concentrations of strength which were 

 more than a match tor tlu' most dangerous of man's adversaries ( I'lg. 407). 



The PARiEtAi, TiMPOKAL AM) OcciPiTAL LoBF.s. The ])arietal, tem- 

 poral and occij)ital lobes indicati- the extremel\ primiti\e status of the 

 Rhodesian brain. Tlu' marked llatness which characterizes the area of the 

 supraparietal gyrus is especially striking and significant. This region repre- 

 sents a functional area in which the higher elaborations of body sense are 



