THE CEREBRO-SPINAL NERVOUS SYSTEM. 



SOT 



Marginal convolution runs parallel to the preceding, and occupies the 

 space between it and the edge of the longitudinal fissure. 



The two convolutions are separated by the calloso-marginal fissure. 



The internal perpendicular fissure is well marked, and runs down- 

 wards to its junction with the calcarine fissure: the wedge-shaped mass 

 intervening between these two is termed the cuneus. The calcarine fis- 



(wWlf& 



FIG. 348. 













FIG. 349. 



FIG. 350. 



FIG. 34^. The layers of the cortical gray matter of the cerebrum. (Meynert.^ 

 FIG. 350. (Drawn by G. Mimro Smith from ammonium bichromate preparations by E. C. 

 Bonsfleld.) 



sure corresponds to the projection into the posterior cornu of the lateral 

 ventricle, termed the Hippocampus minor. The temporo-sphenoidal lobe 

 on its internal aspect is seen to end in a hook (uncinate gyrus). The 

 notch round which it curves is continued up and back as the dentate or 



