INFLUENCE OF PHILIPPINE CLIMATE ON WHITE MEN. 



439 



Table XIII. — Comparative average dynamometer tests on 111 blonds and 118 

 brunettes, 1909-Group. Registered in kilograms. 



Type. 



First 

 quarter. 



Second i Third 

 quarter. ' quarter. 



Fotirth 

 .quarter. 



Average Gain 

 for year, for year. 



Average 

 height. 



cm. 



171.1 



171.1 



Average 

 weight. 



Kilos. 

 64.1 

 65.0 



Blond 



51.7 

 52.8 



52.1 I .51.1 .53.0 

 52.5 1 .51.3 .53.3 



.52. 1 1. 3 

 .52. 5 0. 5 



Brunette 









Table XIV. — Comparative average dynamometei' tests on 31 blonds and 31 

 brunettes, 1910-Group. Registered in kilograms. 



Type. 



Blond — . 

 Brunette 

 Blond ___ 

 Brunette 



Hand. 



Second 



quarter 



1910. 



Right.__ 



54.0 



Right_- 



52.2 



Left -___ 



4V.2 



Left -___ 



47.6 



Third ' Fourth 



quarter quarter 



1910. i 1910. 



52. 5 



52.7 

 48.0 

 48.2 



,53.2 

 55.1 

 48.9 

 «0.2 



First 



quarter 



1911. 



.54.5 

 55.3 

 50.3 

 50.3 



Second 



quarter 



1911. 



54.2 

 54.8 

 50.0 

 •50.8 



Average|«^;° 

 for year., yg^j 



53.7 

 54.0 

 49.3 

 49.4 



0.2 

 2.6 

 0.8 

 3.2 



Average 

 height. 



an. 

 173.0 

 171. 2 

 173.0 

 17L2 



Average 

 weight 



Kilos. 

 67.0 

 67.0 

 67.0 

 67.0 



The fact that the average strength of the grip increased during the 

 year we believe to be due not to any definite increase in strength on the 

 part of the groups, but rather to the acquisition, through, practice and 

 familiarity with the instrument, of an increased dexterity in compressing 

 the dynamometer. In the large 1909-Grroup this gain was a little more 

 marked for the blonds than for the brunettes. In the 1910-Group the 

 gain in strength of grip in each hand was much more marked for the 

 brunettes, but this group is so small (only 31 men of each type) that 

 the element of chance assumes considerable importance. If all the right 

 hand readings of the first and last observations for both the 1909-Grroup 

 and the 1910-Group are averaged the gain in grip strength for the blonds 

 is 1 kilogram and for the brunettes 0.9 kilogram, a trivial advantage in 

 favor of the blonds. It will be noted that throughout both years the grip 

 record of the blonds is generally a trifle less than that of the brunettes, but 

 this is probably due to the slight advantage in physical development 

 which the brunettes in the two groups seem to show, as evidenced by the 

 relationship of their average weight and height as compared with the 

 same data for the blonds. 



On the whole it appears that the dynamometer tests failed to indicate 

 that the brunettes possessed any appreciable advantage over the blonds 

 as regards the maintenance of their strength. 



