THE BRAIN. : 513 
not comparable in degree to those that distinguish man from 
even the highest apes, the brain of the latter weighing not 
more than about one third as much as that of the human sub- 
ject. While it has been shown that individual men and women 
may reach even distinction in the intellectual world, having 
brains of average or even sub-medium weight; and while idiots 
,have been known to possess brains abnormally heavy, it is 
nevertheless true that brain-weight and the higher powers of 
man bear a close though not invariable relationship. The 
apparent discrepancies are susceptible of explanation. 
33 
