144 MAN AND APES. 



Vrolik, the distinguished naturalists of Am- 

 sterdam, fully recognise the resemblance of 

 the brain of the Orang to that of man to be 

 closer than that }3resented by the brain of any 

 other ape. 



The actual and absolute mass of the brain. 

 is, however, slightly greater in the Chimpanzee 

 than in the Orang, as is the relative vertical 

 extent of the middle part of the cerebrum,, 

 although, as aforesaid, the frontal portion is 

 higher in the Orang. "When we turn to the 

 Gorilla we find, from M. Gratiolet * that this 

 much vaunted and belauded ape is not only 

 inferior to the Orang in cerebral development, 

 but even to his smaller African congener, the 

 Chimpanzee. 



In the first place, its brain scarcely equals 

 (at least in some cases) that of the Chimpanzee 

 in actual mass. It is also flatter, and its frontal 

 lobe is less projecting in front of its temporal 

 lobe. Altogether, M. Gratiolet tells us, its 

 brain-characters make of the Gorilla — in spite 



* See 'Comptes rendus,' April 30th, 1860, p. 801. 



