THE CEREBRUM 



529 



position of these is shown in the accompanying diagrams. 

 These fissures may be taken as roughly dividing the 

 surface of the brain more or less distinctly into several 



„^ F R N Ta 



P»rielo-occipit»l 

 Fissure 



'f^'PORAL tC^' 



Fio. 16S.— Diagram of ()i ter Surface of thb Right Cerebral 

 Hemisphere. 



Fissure of Rolando 



^^^PORAL LOBE 



Fig. 169. — Diagram of the Inner (Mesial) Surface of the Right 

 Hemisphere to show the Parieto-Occipital akd Calcarine 

 Fissures. 

 The corpus callosum is seen shaded in section. 



lobes, frontal, parietal, occipital, and temporal. 

 The extent of these is shown on Figs. 168 and 169. 



When the surface of the hemisphere is stimulated 



Al SI 



