THE BR.AIN OF MODERN MAN -93 



in the region immediately posterior to the corpus callosum. TTie occipital notch 

 is much reduced in size, and the degree to which the occipital surface overhangs 

 the cerebellum has undei^one considerable extension as compared with the 



FIG. 339B. DETAILED DIAGR-Jtil OF LEFT LATERAL SLRFACE OF BRAIS. 



HOilO SAPIENS- 

 Ket to Diacrax. scijC tNT-. SoJicus InteipaxiEtafe; stix. ocrrp. lat.., Sakns Ocxaica&Lateia&^sirLjCcs 

 occrPTTAUs TRA^s~ Salens Occqjttalis Tninsversas; stTLC psecnt. rsT_ Sclcos PrecectnEs Iniexior; scxjC 

 PBECVT. si-p-. Sulcus Precentrals Superior; sixc- rft. ivf-. Sokes RiKrtjceumEs laiitiicc. 



higher anthropoids. All of these facts indicate a simultaneous expansion 

 both in the occipital region of the hemispheres and in the cerebellum. The 

 latter, however, is most aflFected in its lateral lobes. 



THE CERFBELLL'M 



The cerebellum, quite as much as the cerebral hemispheres, afforck 

 e\Tdence of the expansK-e pHX)cesses which have made such marked advances 

 in the human brain. Such progress is particularly well shown upon the 



