Academy of Sciences] 

 No. 3] 



MEASUREMENTS 



rty^ t Head Length 



31 



too Ota. cUvu^u.A<vi4 



-.-. — «»=- — —. 50 "hot •♦ 



The breadth of the head, as head length, is appreciably larger in the academicians than in 

 the old Americans at large; this connects, as will be seen later, with the larger size of their heads 

 as a whole. 



The breadth is further seen to be somewhat larger in the academicians of more recent 

 European derivation than in those who come from older American families; this is connected, 

 as will be shown later, with head shape rather than size, and compensates with the smaller head 

 length in this group. 



The individual variability is higher, within the Academy, in the not old Americans than it 

 is in the old Americans, which agrees with expectations based on the descent of the two groups. 

 The still higher range in the old Americans at large is due to the much larger number of indi- 

 viduals involved. 



