

DIGESTION EXPERIMENTS WITH AN INFANT. 183 
Shortly after the close of this study the child took cold and 
lost his appetite. ‘This accounts for the fact that at the begin- 
ning of the second study he weighed less by over three-quarters 
of a pound than at the close of the first experiment. 
At the time of the second experiment oatmeal gruel was 
added to the milk, as described above, in order to ascertain if 
the mixed food would be more digestible than the milk alone. 
This apparently was the case. ‘he feces contained fewer 
undigested curds and the child’s appetite was more constant. 
Of the protein two per cent. more was digested in the second 
experiment than in the first, and 1.7 per cent. more fat. The 
greatest difference, however, appears in the carbohydrates, 
where we find an increase of ten per cent. in the digestibility 
of the milk and oatmeal together, as compared with that of the 
milk alone. 
DIGESTION EXPERIMENT NO. 7. 
kinds of food: Milk. Subject: Infant, 9 months old; weight, 
without clothing, 25.19 lbs. (11.43 kilos), at the beginning, 
and 25.38 lbs. (11.51 kilos), at the end of the experiment. 
Sex: Male. The experiment began with the first meal taken 
February 5, 1895, and continued 8 days, ending with the last 
meal taken February 12. Six meals a day were usually taken. 
The feces were collected from the morning of February 6 to 
the morning of February 14 (8 days). 
TABLE 55. 
Weights and fuel values of nutrients tn food eaten and in feces 
for 8 days; and weights, fuel values, and per- 
centages of nutrients digested. 


So hae o a Os ie Ailes: 
MATERIALS. bo 8 6 4 Pw 3 os ae S 
4 a es ro) [xy Bro =< [pieig 
on ss Mh ors | 3 
SF (2) Ay Xe: | o 
| aaa 








Grams. | Grams. | Grams. | Grams. | Grams. | Grams. ICalories 
1347 | 427 | 530} 390| 80 | 9450 
114 26 23 65 39 | 950 
1233 AOI 507 325 AI | 8500 
er Si a | Soe, 
Milk (cow’s), - . - 
Feces, 2. ¢., undigested 
residue, - = - 
Amount digested, - - 
Fuel value of urea,* - 






bo eee 
se 
Net fuel value food digested, — a — se ee 
iit Z| % Be | Ub poems Weg 
Percent. digested, - - Ols5 9093-0 Lis fake O53 ul STO | 86.3 

* Digested protein multiplied by .87.. See explanations p. 178. 
