Ability with the Size and Sliapc of the Head 

 (a.) Cephalic Index of Honours Men. 



341 



Miss M. A. Lewenz worked out the correlation, first grouping the 

 first and second class together, and then the second and third class to 

 form a fourfold table. In the first case we have correlation between 

 ability and dolichocephaly = 0-0641 0'0487, and in the second case 

 = - 0'0254 0'0490. The probable error is of the same order as the 

 coefficients, and neither result is significant. \Ve conclude that there 

 is nothing whatever to show that great ability as evidenced by the 

 competitive-examination test is related especially to either dolicho- 

 cephaly or brachicephaly. 



(!>.) Length of Head of Honours Men. 



Honours. 



1st class. , 

 2nd class 

 3rd class 



Totals 



Under 7" '65. 



68 



94 



102 



264 



S5 

 88 

 87 



260 



Totals. 



153 

 182 



180 



524 



Grouping first and second class together, Miss M. A. Lewenz found 

 r = 0'0865 0-0471 for the correlation between great ability and long- 

 headedness, sensibly the same as that found on p. 335, when the poll men 

 were taken into account. Grouping second and third class together, 

 the value of r rose to 0'1263 0'0439, the probable error of the differ- 

 ence being greater than the difference. Before commenting on this I 

 give the table for breadth of head : 



