25 



quentl}', no ledi.-stribution of the cost items would bring exactly the 

 same value as was secured in periods 1 and 2 for the same sum. 



At the end of the study Subject C weighed 143 pounds, or 2 pounds 

 less than at the beginning of the investigation, some seven months 

 previous. The anthropometric measurements showed very small 

 changes, but, as shown by the strength tests, the subject gained rather 

 more than the average, indicating a slight improvement in muscular 

 condition. Medical examination showed no marked chantre in his 

 general physical condition. 



In his college work Subject C attained a grade between B and C, 

 which ma}' be considered slightly above the average. Remembering 

 that he carried 6 courses, instead of the usual 4i, and that he sup- 

 ported himself by outside work, his performance was very creditable 

 indeed. 



The general average for the three periods shows 8T.7 grams of 

 digestible protein and 2,947 calories of available energ}" in the daily 

 food. Although these figures are lower than they would have been 

 if he had exercised the same' prudence in the selection of economical 

 dishes in the last period as he did in the first two periods, they are not 

 very far from the commonly accepted standard for a man of sedentary 

 habits, namely, 92 grams of digestible protein and 2,700 calories of 

 available energy. It is not at all certain, however, that for a person of 

 such active habits and long hours of duty the diet was in every way suf- 

 ficient for the best functioning of brain and body. It is to be observed 

 that, although Subject C had been seriousl}" ill shorth' before the 

 beginning of the college year, his bodily weight was less at the end of 

 the study than at the beginning, whereas the average gain of the 10 

 men studied was 4 per cent over their initial weights. 



DIETARY STUDY NO. 404. 



Subject D was 22 years old, 5 feet 6.5 inches in height, and weighed 

 119.5 pounds. In the usual physical examination he was classed as 

 poorly developed and nourished. His bodily measurements, as well 

 as his height, were considerably below the average for men of the 

 same age. 



A sophomore in the college, he devoted himself exclusively to math- 

 ematics and physics, carrying the usual 4 courses, of which one was 

 on the subject of physics. He slept 6^ to 7i hours per day. Of all 

 the men studied, he devoted the greatest number of hours to his col- 

 lege work, the time thus spent amounting to 11^ to 12f hours, or vir- 

 tually the whole working day. He did no work outside of his college 

 course and took practically no exercise, the sum total for the entire 

 three periods amounting to only 30 minutes to 1 hour gymnasium 

 work per day on 9 days. 

 13037— No. 152—05 4 



