364 
Pigmentation, Selection and Anthropometric Characters 
These tables refer one to hair and the other to eye colour. They are both 
constructed on the same lines, and give the percentage out of the total of the 
various hair and eye colour categories which have had the diseases in question. 
They include only the older children. If any one hair or eye colour was definitely 
connected with a special liability to disease, these tables ought to show it. If, for 
example, dark hair was less liable to disease, we ought to find some indication of it 
here. But the variations that do occur appear wholly irregular, and give no 
indication of any systematic correlation between one shade of pigmentation and 
disease — -whether we look at diseases as a whole or at any one disease alone. 
There are a few deviations from the general course of averages which appear at 
first sight to be somewhat remarkable ; thus, 52 per cent, of the black haired 
boys had whooping cough, and only 13 per cent, of the black haired girls had 
mumps. But such cases always occur where the probable error is very large, due 
in this case to the fact that the number of black haired children out of the total 
is less than 2 per cent. In Table VIII, which deals with eye colour, the deviations 
are not so remarkable since the eye colour groups form more equal divisions of the 
total number than the hair colour groups do; in this table, where large deviations 
are found, it is due to the fact that in certain diseases, such as diphtheria, the 
total number of cases is very small. 
In discussing the fact that girls were found to have a larger average number of 
diseases than boys, it was stated that this was not due to a special outbreak of one 
disease among the girls. These tables provide the justification for this statement ; 
it can be seen that the girls in all six diseases have a larger average number than 
the boys. 
Tables IX and X are constructed on exactly similar lines to Tables VII and 
VIII, but refer to the younger children aged 3 — 7. They show the percentage of 
each hair and eye colour group that have had each of the six specified diseases. 
It is again equally evident that no general coincidence can be traced — such as the 
TABLE IX. 
Incidence of Disease in Hair Colour Groups. Percentages. 
Boys and Girls. Age 3 — 7. 
Measles 
Whooping 
Scarlet 
Diphtheria 
Mdmps 
Chicken Pox 
Cough 
Fever 
Hair Colour 
Boys 
Girls 
Boys 
Girls 
Boys 
Girls 
Boys 
Girls 
Boys 
Girls 
Boys 
Girls 
Red 
71-4 
85-7 
38-6 
42-9 
9-5 
14-3 
4-8 
o-o 
23-8 
o-o 
23-8 
14-3 
Fair 
78-9 
64-7 
36-5 
44-1 
5-7 
8-8 
o-o 
o-o 
17-3 
o-o 
40-4 
32-4 
Light Brown 
63-3 
64-0 
31-2 
43-0 
7-0 
Gl 
0-8 
2-6 
10-2 
18-4 
30-5 
39-5 
Medium Brown 
57'7 
57-6 
38-1 
38-2 
7-4 
9-7 
2-1 
2-1 
17-5 
18-8 
33-9 
24-3 
Dark Brown 
59-7 
45 -0 
41-6 
33-3 
5-2 
5-0 
1-3 
o-o 
13-0 
133 
28-6 
16-7 
Black 
33-3 
100-0 
33 3 
100-0 
o-o 
0-0 
o-o 
o-o 
o-o 
o-o 
333 
100-0 
