646 



THE HIGHER ANTHROPOIDS 



THE BASAL SURFACE 



Certain features on the basal siirfaee are equall\ important m then" elose 

 corresponclenee to the human bram. The two eharaeterrstie eoneavities of 



FIG. 2()2\. DORSAL SLKFACE Ol BRAIN, GORILLA. 

 [Actual Lcnglli 1 17 111111. | 



this surfaee, l)olh snpra-orbita! and ecrel)ellar, show a ni'irkecl cleerease in 

 prominence as compared with \hv lowt-r and uilcrnu'chatt' lorms. The 



