216 



STUDY OF BRAINS OF SIX EMINENT SCIENTISTS AND SCHOLARS. 



from the cranial capacity. The difficulties that are encountered in this procedure are 

 obvious, for the factors of age, cranial form, state of nutrition and the conditions of 

 disease prior to death influence the calculations considerably. Welcker, Bischoff, 

 Weisbach, Manouvrier, Topinard and Bolk have devoted not a little study to the 

 subject. 



Average 1650 



Welcker found that the coefficient which expresses the ratio between cranial 

 capacity and brain-weight is not uniform for both large and small skulls. His find- 

 ings may be summarized in the following table (after Welcker): 



Cranial Capacity in Cubic 

 Centimeters. 



1200-1300 

 1300-1400 

 1400-1500 

 1600-1600 

 1600-1700 



Coefficient. 

 . .91 



. .92 



. .93 



. .94 



. .95 



Average .935 



