358 Pigmentation, Selection and Anthropometric Characters 
If we consider first the average number of diseases to the different hair colour 
groups, we find no evidence of any significant connection between one hair colour 
and disease. The differences in the averages are not only slight, but occur ap- 
parently at random ; we do not find one hair colour associated in both boys and 
girls with a distinctive average whether greater or less than the normal. Further 
it does not appear that dark hair shows any significant difference from light hair 
in this respect. Red, fair and light brown have been classed together as light hair, 
and the remaining categories as dark hair. In two cases the average number of 
diseases is exactly equal in the different groups; in the other two cases, the light 
haired group is in excess on one occasion, and the dark haired group in the other. 
So far, therefore, as this table goes, there is no reason for thinking that liability to 
disease is connected with any particular hair colour. 
TABLE IV. (See Tables XV and XVI, pp. 378—379.) 
Incidence of Disease in Hair Colour Groups. 
Hair Colour 
Boys. Age 13 
Girls. Age 13 
Cases of Disease 
Average 
Cases of Disease 
Average 
Red 
Fair 
Light Brown ... 
Medium Brown 
Dark Brown ... 
Black 
125 \ 
434 V 1317 
758 J 
1183 \ 
1071 V 2323 
69 J 
2-01 ~| 
1-71 \ T74 
1-71 ] 
1-88 ) 
1- 84 \ 1-88 
2- 22 J 
148 ~| 
483 V 1520 
889 J 
1395 \ 
1416 [ 2908 
97 J 
2-0 "I 
2-04 V 2-12 
2-19 J 
2-13 ) 
2-11 [ 2-12 
2-1 J 
Totals 
3640 
4428 
Average number of diseases to each boy 1*83. Average number of diseases to each girl 2"12. 
Hair Colour 
Boys. Age 3 — 7 
Girls. Age 3 — 7 
Cases of Disease 
Average 
Cases of Disease 
Average 
Red 
Fair 
Light Brown ... 
Medium Brown 
Dark Brown ... 
Black 
36 ) 
93 \ 313 
184 J 
296 \ 
115 \ 414 
3 J 
1-71 ) 
1-79 I 1-56 
1-44 J 
1-57 ) 
1-49 \ 1-54 
1-0 J 
51 I 260 
198 J 
217 ) 
68 I 286 
1-58 ] 
1-5 L 1-68 
1-74 J 
1-5 | 
1-13 } 1-40 
1-0 J 
Totals 
727 
546 
Average number of diseases to each boy D55. Average number of diseases to each giri l - 52. 
