Fis. 1 



1861.] 



CCalL^" 



sex e„ 



Fig. 1. — Transverse sections of corresponding (left) cerebral hemispheres of Man 

 (A, B, C, D, E) and of Ateles (A', B', C, D', E'), taken perpendicularly to the 

 plane of the corpus callosum, along the lines marked with corresponding 

 letters in Fig. 2. I. calcarine sulcus ; n. collateral sulcus ; i. calloso-marginal, 

 k. occipito-parietal sulcus ; c. p. posterior cornu ; x. hippocampus minor ; 

 XX. hippocampus major. A-D, A'-D' viewed from behind ; E and E' from 

 in front. 



