42 



On the other hand, the vegetable foods, as might be inferred, were 

 consumed in greater quantities than usual. Thus the expenditure for 

 breads was about 25 per cent, for cereals about 65 per cent, for des- 

 serts about 150 per cent, and for vegetables about 40 per cent above 

 the average. There was a noticeable decline in the amount of protein 

 in the diet during the second and third periods, while the price of the 

 diet per day remained nearly the same; thus in the three periods, the 

 ratio of digestible protein to available energy was 1 gram to 35 calo- 

 ries, 1 gram to 40 calories, and 1 gram to 42 calories, respectively. 

 Perhaps the chief reasons for this were decrease in the amount of 

 protein obtained per money unit expended for meats in period 3, the 

 use of more butter and cream and less milk in both periods 2 and 3, 

 and a general tendency toward a more liberal purchase of the less 

 economical foods. 



At the end of the investigation Subject H had gained 4.8 pounds 

 and showed the usual slight increase in anthropometric measurements 

 and in strength-test figures. Medical examination showed no change 

 in his general physical condition. In the examinations at the end of 

 the college year he attained an average grade of about B. 



We have, then, in the case of Subject H a student rather older than 

 the average of those studied, who performed a creditable ^^ear's work 

 at college on a diet somewhat vegetarian in nature, which averaged 

 for the three test periods 73 grams of digestible protein and 2,809 calo- 

 ries of available energy, amounts which are respective!}" 70.5 and 104 

 per cent of those called for by the commonl}' accepted standard for a 

 man of sedentary habits, without showing any evidence of physical 

 deterioration. In fact, in this instance the gain of nearly 5 pounds is 

 ground for believing that he was certainly in equilibrium with his 

 enviromnent, especially since he had passed the age of greatest bodily 

 development. 



DIETARY STUDY NO. 409. 



Subject I was 16 3'^ears old, 5 feet 4.2 inches in height, and weighed 

 llOi pounds. He was classed as well developed and well nourished, 

 though compared with the average college student of the same age his 

 measurements were a little below the normal. He was a freshman in 

 the college and took the usual broad foundation studies, carrying, how- 

 ever, six instead of the customary five courses, which gave him a 

 rather full 3^ear's work. He slept fi'om 8i to 8i hours and spent from 

 7i to 8f hours daily in college work. In addition to this he did cler- 

 ical work amounting to a total of 36 to 45 hours in the first, 9 to 24 

 hours in the second, and 4 to 10 hours in the third period. He took 

 very little exercise. Thus, during the three weeks of period 1 he 

 walked 4 hours, during period 2 he walked 1 to 2 hours, and during 

 period 3 he took an hour's walk on one occasion and on another he 

 rode a bicycle for 5 hours. 



