MAN AND APES. 143 



which in man are conspicuously interposed 

 between the parietal and occipital lobes, seem 

 as utterly to disappear in the Chimpanzee as 

 they do in the Baboon. In the Orang, how- 

 ever, though much reduced, they are still to 

 be distinguished. Besides these matters, the 

 temporal lobe becomes less horizontal and 

 more depressed as we proceed from man to 

 the Baboon. 



These distinctions, with some others, have 

 been pointed out in France by the late 

 lamented M. Gratiolet,* and in England by 

 Professor Rolleston.f Mr. Marshall, F.R.S., 

 has also given his verdict J " on the interesting- 

 quest ion of the relative superiority of the 

 Chimpanzee's and Orang's brain" "in favour 

 of the latter." 



Messrs. Schroeder van der Kolk and W. 



* ' Memoire sur les plis cerebraux de l'homme et des 

 primates.' 



t ' Nat. Hist. Eeview,' vol i. p. 201, and in a Lecture 

 at the Koyal Institution, reported in the ' Medical Times ' 

 for February and March 1862. 



J ' Nat. Hist. Eeview,' vol. i. p. 310. 



