CHAP. IV] THE GENERAL ANATOMY OF GORILLA 



189 



As remarked above, that organ presents no small degree of 

 similarity to the human brain [the resemblance is rather more 

 marked in the mesial aspect of the cerebrum than on its lateral 



,'' ' fissure 



Rhinal Pissure Uncus 



Olf.N 



Fig. 124. Mesial (A) and frontal (B) aspects of the right and left cerebral 

 hemispheres of a Gorilla (from a specimen in the Anatomy Museum at Munich). 

 Note the very great similarity in appearance, as regards the mesial aspect, to the 

 human cerebral hemisphere. The rhinal fissure (incisura temporalis) is conspicuous. 

 In B note the uncovered state of the insula and the lack of definite anterior limbs 

 of the Fissure of Sylvius. 



convexity (cf. Fig. 124 a)]. Nevertheless distinctions of importance 

 remain, and some of these will now be considered briefly. 



1. The Gorilla's brain is greatly inferior in point of size and 

 weight. The human brain weighs about 2^ times as much as 



