168 



ARBOREAL MAN 



this area. It could be conceived that there might be 

 separated sensory and motor areas adjoining each other, 

 or the two might be combined in one complex sensori- 

 motor area, which, in the hope of providing a rather 

 wider connotation, has been named the " kincesthetic 

 area." Some of the difficulties w^ould, I believe, be 

 removed by naming it the ''pictured movement area," 

 and for " pictured " we might substitute the words 

 " realized " or " known," provided the connotation of 



Fig. 67. — Cerebral Hemisphere of a Lemur, to show the 

 Cortical Areas as determined by Brodmaxn. (From 

 Duckworth.) 



Note the general enlargement of the " association " areas from 



the stage seen in Tarsius. 



these words were clearlv understood. In this area are 



ft/ 



represented the impressions of those parts of the body 

 of which the animal has concrete knowledge. The hand, 

 the forearm, the elbow-joint, the arm, the shoulder; 

 the trunk, the thigh, hip, knee, leg, ankle, foot, and 

 perineum, all have their specially allotted areas in Man. 

 And to these centres of the im2:)ression of pictured parts 

 are added, possibly by the agency implied by neurobio- 

 taxis, the centres concerned with the pictured movements 

 of these parts. 



\Yithout an extended discussion of the anatomical 

 details of the central nervous system, we may fall back 



