653 



(ieiiv (liis influence eniirel}-, others attacli gieal inüportaiiee lo il, 

 wliic'li shows how difticnit it is to delerniine whether the i'ace is 

 really of any influence on the menarche, as it also is influenced 

 by other, external, factors, (social surroundings, temperature, soil, etc.). 



I do not know of any investigation in which the influence of 

 the race on the commencement of sexual maturity has been actually 

 proved, and this induced me, while collecting the data, to inquire 

 into the degree of pigmentation. 



The material was sorted and divided into the women wi(h light 

 and those with dark eyes; these will in future be called "blondes" 

 and "brunettes"; of the former my material contained 1130, of the 

 latter 670. 



The appearence of the menarche was worked out statistically for 

 each of these groups separately, the result is seen in Table III and 

 the graphs plotted out from this table have been sketched in fig. 2. 

 in which curve A refers to the Jewesses, curve B to the "bloiuies", 

 curve C to the "brunettes". 



26 % 

 l^ % 

 iZ % 

 lo % 



IS *. 

 IH % 



12 X 

 10 % 



B % 



« % 



^ % 



2 % 



AB. 



IS 16 17 IB 



Fig. 2. 



