

The base of the brain is shown in the upper figure. The numerals indicate the 

 cranial nerves. CI, the 1st cervical ; P, pituitary body ; H, lobus hippo- 

 campi ; S, Sylvian fissure ; B, olfactory bulb ; the small letters the con- 

 volutions of the orbital lobe. 



The mesial surface of the left hemisphere in the lower figure. S, the Sylvian 

 fissure; H, lobus hippocampi; /(, hippocampal fissure; ph, postero- 

 horizontal fissure ; sp, splenial fissure ; cc, convolution of corpus callosum ; 

 sspc, supra-splenial convolution ; rn, marginal convolution ; spe, splenial 

 convolution ; he, hijjpocampal convolution. 



