22 
Pigmentation, Susceptibility and Race Selection 
TABLES II a and lib. Showing the Percentages of the various Hair 
and Eye Colours in the Diseases considered as compared with the 
General Population. „L 
(a) Hair Colour. • ' 
Black 
Dark 
Medium 
Fair 
Ked 
General population 
1-2 
27-2 
45-2 
21-4 
5-0 
Scarlet Fever 
(V6 
15-5 
59-4 
19-3 
5-0 
Diphtheria 
o-i 
13-9 
57-7 
24-1 
4-2 
Measles 
o-o 
12-9 
55-5 
27-8 
3-8 
Whooping Cough ... 
0-6 
11-3 
613 
23-6 
3^2 
(b) Eye Colour. 
Dark 
Medium 
Light 
Blue 
General population 
24-5 
34 0 
30-3 
11-2 
Scarlet Fever 
15-0 
62-0 
17-8 
5-2 
Diphtheria 
15-2 
44-4 
35 3 
5-1 
Measles 
14-5 
60-2 
22-1 
32 
Whooping Cough... 
15-2 
38-1 
35-8 
11-0 
Scar-let Fever. In considering the scarlet fever cases, as elsewhere, boys and 
girls and Belvidere and Ruchill patients have been grouped together, and compared 
with Tocher's statistics for the combined areas. In addition the boys and girls in 
the Ruchill cases have been separated and compared with Tocher's statistics for 
the boys and girls in the Ruchill area. This accounts for the slight difference in 
the theoretical* percentages. 
From Table III it appears that whether the boys and girls be treated as separate 
units or combined, the results are similar. Both combined and individually 
medium hair is considerably in excess, dark and jet black considerably and fair 
hair slightly deficient and red hair about equal when compared to their propor- 
tional representation in the general population. The greater percentage cf 
medium and the smaller percentage of dark-haired cases in hospital, in boys as 
compared with girls, has a corresponding difference in the general population. It 
would seem then that the medium-haired child is susceptible to scarlet fever to a 
greater extent than, the dark and jet black-haired to a less extent than, and the 
red and fair-haired child almost equally with its proportional representation in the 
general population. . ; 
* The term "theoretical percentage " refers to the percentage given in Tocher's statistics for the 
same area. The term " theoretical numbers " refers to the numbers which would occur if the cases 
were admitted to hospital in the same percentage of each colour as in Tocher's statistics for the same 
area. 
