210 VITALITY AND EFFICIENCY WITH RESTRICTED DIET. 



them in the form of curves to show several important things, first, the 

 loss in body-weight at the beginning of the experiment during the 

 period of reduction in diet; second, the approximately constant level 

 of body-weight during the period of partial realimentation; third, the 

 not insignificant alterations in body-weight following the unavoid- 

 able, but regrettable, periods of unrestricted diet, i. e., occasional 

 Sundays, four days at the Thanksgiving season,^ and 18 days at the 

 Christmas recess; finally, the astonishing increase in body-weight inci- 

 dent to the complete withdrawal of all dietetic restrictions after Feb- 

 ruary 4, 1918. Since this picture is so pronounced, it has been deemed 

 advisable to plot an individual weight curve for each man in both Squad 

 A and Squad B. In considering these curves, it should be remembered 

 that the Thanksgiving recess was from November 29 to December 2, 

 inclusive, and the Christmas recess from December 20 to January 6, 

 inclusive, although some of the men did not return to college until later. 



BODY-WEIGHT CURVES OF SQUAD A. 

 Body-weight curve of Bro (Fig. 57). 



Prior to the reduction in diet, Bro had a weight of 61.8 kg. The 

 next record of weight was not taken for about two weeks, during which 

 time there had been a material curtailment of diet, but the weight had 

 dropped to only 61 kg. Subsequently, owing to the restriction in diet, 



Kgj. 



62 

 61 



60 

 59 

 58 

 57 

 56 

 55 



34 



Sept.30 Oct20 



Nov.9 Novi29 DeclQ Jan.8 Jan.2a 



Fig. 57. — Body-weight curve of Bro. 



the weight decreased in a reasonably regular manner until the unre- 

 stricted meal of November 25, after which there was a rise of approxi- 

 mately 1 kg. On December 9 the weight had fallen to a lower level 



^ The absence of a pronounced change in weight after Thanksgiving was doubtless due to the 

 fact that records of the body-weight were not made until December 4, and the men had trained 

 for a loss in weight to counterbalance the gain during the Thanksgiving recess. 



