BIOMETR1C STANDARDS IN HUMAN NUTRITION 389 



For 136 men 1631.74 calories. 



For 103 women 1349.19 calories. 



For 51 male infants 144.55 calories. 



For 43 female infants 140.37 calories. 



Thus it appears that the basal energy requirements of the 

 American men are a little less than one half of the number of 

 Hilories (3,300) established by the Inter-Allied Scientific Food 

 &amp;lt;ommission as necessary for rationing in the case of men doing 

 .i/erage work eight hours per day. They are a little less than 

 Mf the 3,200 to 3,600 calories used by a group of men at the 

 Ipringfield Y. M. C. A. college before they were subjected to 

 iitioning tests by the Nutrition Laboratory. The average for 

 w-born infants is somewhat less than ten per cent, of that 

 &amp;lt;: women. 



Human beings differ in their basal metabolism just as they 



in stature, weight, pulse-rate and other measurable charac- 

 1rs. For example, the 136 men and 103 women showed the 

 ciily caloric output represented by Fig. 1. In these polygons 

 l.e ordinates represent the frequencies of total heat production 



1 calories per twenty-four hours. 



WOMEN 



II II 1 1 i 1 HI I i Ilil i 1 1 1 1 



P. 2. FREQUENCIES OF MEN AND WOMEN PRODUCING VARIOUS NUMBERS OF CALORIES 



PBB SQUARE METEK OF BODY SURFACE PEB TWENTY -FOUR HOURS. 



The distribution of daily heat production in men and women 

 ii represented by monomodal, more or less symmetrical fre- 

 qency polygons. This result is of considerable interest since 

 ilshows that the distribution of the magnitude of human basal 



