506 Proceedings of Royal Society of Edinburgh. [sess. 
Conclusions. 
On two of the diets studied the subject was able to maintain 
health and muscular vigour because the amount of proteid and 
energy yielded was sufficient, but in both the cost was considerably 
in excess of that for which the labouring classes in town or 
country are able to procure an equally satisfactory diet. They are 
both essentially wasteful diets, and are not to he recommended for 
general adoption. 
The study of the ordinary diets of the labouring classes in all 
countries seems to show that whenever possible a diet is secured 
which will yield something over 3000 Calories of energy and over 
100 grms. of proteids per man per diem. It is improbable that so 
many different races should have made the same mistakes in the 
essential elements of their very varied diets, and we think that the 
evidence afforded by these diets cannot he set aside even by so 
careful a set of experiments as those conducted by Chittenden. 
( Issued separately April 8 , 1905 .) 
