NURTURE AND NATURE I 7 



group I am inclined to think that the lower value 

 is the more correct. 



Even if the higher value proves to be the true 

 one, '20 is still a low correlation, and when we re- 

 member that the value for the correlation coefficient 

 of heredity between height of mother and son is '49 

 we see that employment of the mother has far less 

 influence than heredity on the physique of the son. 



Unfortunately I have not yet found the correla- 

 tion between the employment of the mother and the 

 height and weight of her children for all school 

 groups in Glasgow but I have worked out the 

 results for two school groups and for the Edinburgh 

 children. In the Edinburgh schools we see that 

 there is practically no connection between employ- 

 ment of the mother and the physique of her children ; 

 the correlation coefficients are '02 and 'oo. When 

 we examine the results for Glasgow we see that the 

 effect of the mother's employment on the weight of 

 her daughters is very uniform in the three school 

 groups, '11, '11 and '09, and is about the same as the 

 effect on the weight of the sons, though higher in the 

 best group of schools. The two height results are 

 again more irregular; it would seem that the height 

 of girls is less affected by the mother's employment 

 than the height of boys, and in one of the two school 

 groups it is not affected at all which agrees with the 

 results found for Edinburgh. 



The results we have reached so far show on the 

 whole that the employment of the mother has even 

 less influence on the physique of her daughters than 

 on the physique of her sons. 



