51 
he felt the necessity of a third meal, which was eaten about 7 p. in. 
In this instance the physiological results are entirely in accord with 
data of the test. The diet furnished only a small amount of nutri- 
ment, and as a natural consequence the subject felt weak and unable 
to perform his usual gymnastic exercises or to take his accustomed 
long walk. 
DIGESTION EXPERIMENT NO. 31)9. 
Kind of food. — Apples and almonds. 
Subject. - C. P. H. 
Weight {with clothes).- — At the beginning* of the experiment, 03.7 
kilograms (140.5 pounds), and at the close, 61.9 kilograms (136.5 
pounds). 
Duration. — Four days, with eight meals, beginning with breakfast 
January 6, 1902. 
Table 33. — Results of digestion experiment JS r o. S99. 
Sam- 
ple 
No. 
Total 
organic 
matter. 
Nitro- 
gen. 
Pro- 
tein. 
Carbohydrates. 
Ash. 
Heat of 
combus- 
tion. 
Kind of food. of ma- 
terial. 
Fat. 
Sugar, 
starch, 
etc. 
Fiber. 
209a 
249 
Apples 
Almonds 
Total 
Feces (water-free) 
Amount digested. 
Per cent digested. 
Grams. 
5,840 
851 
Grams. 
594. 50 
789. 69 
Grams. 
5.01 
23.53 
Grams. 
30.95 
147. 04 
Grams. 
31.53 
462. 10 
Grams. 
477. 70 
158. 60 
Grams. 
54. 32 
21.95 
Grains. 
14.02 
23.66 
Calories. 
2,683 
5,883 
6,691 
1,384.19 28.57 
177. 99 
493.63 636.30 
76. 27 
37.68 
8,566 
61a 
162. 48 
6,528.52 
144. 10 
1, 240. 10 
89.61 
7.29 
21. 2$ 
74.48 
45. 56 
132. 43 
74.41 
58.00 
435. 63 
88. 23 
26. 45 
609. 85 
95. 85 
14.09 
62.18 
81.53 
18.38 
19.30 
51.22 
1,018 
7,548 
88.11 
Energy of urine .... 
165 
Energy of food 
oxidized in the 
7,383 
Per cent of energy 
86.18 
1 
[" 
During this experiment the subject eliminated 5,125 grams urine, 
containing 0.399 per cent or 20. -15 grams nitrogen. The average 
nitrogen balance per day was therefore as follows: Income in food 
7.14; outgo in urine 5.11 grams, and in feces 1.82 grams; indicating 
a gain of 0.21 gram nitrogen, corresponding to 1.31 grams protein. 
The subject drank no water during this experiment and although 
apples are quite succulent and supply considerable water, the lack of 
it as a beverage may tend to account to some extent for the loss of 4 
pounds in body weight. The fact that there was such a decrease 
in weight combined with a slight increase in protein would seem to 
warrant such a conclusion. 
The subject found himself becoming steadily weaker as the experi- 
ment continued. He omitted much of his usual exercise and consider- 
ably shortened his daily walk. 
