286 VITALITY AND EFFICIENCY WITH RESTHICTED DIET. 



Table 35. — Nitrogen in food, energy available to body, and nitrogen excreted in urine during 

 periods with the different diet levels, Squad A. * — continued. 



' See detailed results in tables 46 to 58. 



were independently established by simply giving such an amount of 

 food as would hold the weight constant without the pre-determina- 

 tion of the caloric value, we find that during the first maintenance 

 period (December 3 to 20) he required 2,479 calories and during the 

 second period, (January 9 to February 3) the requirement was 2,386 

 calories. A close examination of the curves, however, shows a slight 

 tendency for the body-weight to fall during these periods and we 

 may state in round numbers that Can required 2,500 calories for 

 maintenance at this lower level. 



With Kon the conditions are somewhat different, inasmuch as he 

 joined Squad A several weeks after the experiment was begun. The 

 reduction in diet was therefore somewhat stringent and no clearly 

 defined period of constancy in body-weight can be noted from the 

 body-weight curve. (See fig. 59, p. 213.) There is, however, a 

 tendency for the body-weight to be maintained at constancy between 

 December 3 and 20, although the last weight shows a decided fall. 

 In January the energy intake was adjusted to a lower level to com- 

 pensate for the great increase in body-weight during the Christmas 

 recess; during the last 10 days in January the weight remained very 

 constant at this caloric intake. If we are to consider this energy 



