Il6 THE GROWTH OF THK BRAIN. 



rearranged in the order of the average weight of male 

 brains, which is different from the order in which Davis 

 himself has published them. Supposing his method 

 to have been reliable, we have here a table giving at 

 least the relative brain development in the races com- 

 pared. The European races head the list and the 

 Australian group is at the foot ; but it is plain that if 

 the attempt were made to arrange the intermediate 

 groups according to the degree of their supposed intelli- 

 gence, they would not stand in the same relation that 

 they now do. 



Difficulty also attends the attempt to correlate the 

 weight of the brain with the stature of the several races. 

 While in general, among Europeans, the taller indi- 

 viduals in a given race have the heavier brains, it does 

 not follow that the taller races have the heavier brains, 

 so that a correlation between brain-weight and stature 

 is only applicable within narrow limits. The correlation 

 is closer, apparently, with the mass of the body than 

 with its height. But concerning remote races there 

 exist for the most part only such general facts as that 

 they are lightly or heavily built, and no careful deter- 

 minations of the weight. 



At best a conclusion from bodily development to 

 brain-weight is hazardous. Indeed, the fact that the 

 brain at the seventh year of life has reached almost its 

 full weight and the skull corresponding to it almost its 

 full capacity, while the stature of these same individuals 

 is but two-thirds, and the body-weight only about one- 

 third of what it will be at maturity, makes it readily 

 appreciable that it is impracticable to directly corre- 

 late the two growth processes, since they take place at 

 different periods, the increase in stature and weight 

 following in so large a measure the practical completion 

 of growth in the brain. Moreover, Davis and others 



