136 Proceedings of the Royal Society of Edinburgh. [Sess. 
and sugar ration as the basis of a diet, to secure an adequate supply of 
energy, especially as the cost of meat has made its use to any extent 
impossible for the labouring classes. 
As shown there, the flour, meat, and sugar purchased by the families 
studied in 1915-16, even at present prices, cost 6fd. less per person than 
the ration, and yielded 2160 additional Calories per week; but the protein 
derived from these sources was only 342*9g. instead of 367 *4g. as contained 
in the Food Controller’s ration. 
(Issued separately April 30 , 1917 .) 
