PIGMENTATION IN OLD AMERICANS HRDLICKA. 



467 



Units of eye pigmentation. 

 [Per 1,000 subjects.] 



Shade. 



Pure lights: 

 Blues- 

 Light... 

 Medium. 

 Dark.... 



Greenish and greenish-blue. 

 Gray and grayish-blue 



Male. 



790 



2,960 



275 



Female. 



4,025 

 330 



1,500 



5,855 



Mixed. 



Pure browns: 



Light 



Medium. . 

 Dark 



Total. 



26, 250 



2,925 

 6,975 

 2,295 



290 



3,040 



475 



3,805 

 210 

 810 



4,825 



27,900 



12,195 



44,300 



1,430 



10,350 



3,400 



15,180 



47,905 



Eyes— Males : Females :: 100 : 10S.1. 

 Hair— Males : Females :: 100 : 101.5. 



A few words only are necessary to supplement the above figures. 

 The pigmentation of the eye among the females in the Old Ameri- 

 cans is to that of the males as 108.1 to 100 ; the female eye in other 

 words is approximately 8 per cent darker. The rest of the differences 

 parallel what has already been shown by the simple percentages. It 

 is interesting to observe that the differences in the eye pigmentation 

 exceed those in the hair. The same phenomenon, as will be seen 

 later, has been observed in England and is probably true elsewhere. 



REGIONAL DIFFERENCES. 



As with the hair, so with the eyes, the main interest as to regional 

 differences in pigmentation attaches to the question of differences 

 between the north and south. The following table shows these rela- 

 tions : 



Regional distribution of eye color in the Old Americans. 



Region. 



New England 



Middle East and mixed i 



South 



Appalachians (Tennessee and South) 



i Part of forbears from Northern, part from Central, or Southern States 



