THE CEREBRUM 



The parieto-occipital fissure, situated on the mesial surface of the hemi- 

 spheres, divides the latter into a parietal and an occipital lobe. It begins 

 as a deep notch on the surface of the hemisphere, and is then continued 

 downward and forward until it enters the calcarine fissure. (Fig. 246.) 



SUPfKCfNTRAL f. 



'1C. 245 .-FlSSURES AND GYRI ON THE LATERAL SURFACE OF THE LEFT HEMI-CEREBRUM-- 



F. Fissure. G. Gyrus. R. Ramus. (Spitzka.) 



F,G. ,46-F.SSUBES AN D G^ O F THE_M|SUL S^ACE O F THE L EF T HEM,-, 



The calcarine Assure begins on the posterior extremity of the mesial surface 

 ' of tt ocdpitaHobe g From this point it passes downward and forward 

 to unite with the parieto-occipital fissure. 



