



DIGESTION EXPERIMENTS WITH AN INFANT. 185 
TABLE: 57: 
Nutrients and energy in daily food consumed by children under 
2 years of age. 












Z Carb Fuel 
a : é arbDo- ue 
% SUBJECT, Protein. Bate hydrates. | Value. 
Gane | Grams. Gao Calories 
I | Child, 7 weeks old, weight not given, 29 20 120 795 
2 | Child, 4 to5 mos. old; weight, 5.5 kilos, 21 19 98 665 
3 | Child, 4 mos. old; weight, 6.6 kilos, - 8 26 | 63 535 
4 | Child, 14 mos. old; weight, 10.4 kilos, - BT 21 126 840 
5 | Child, 14 mos. old: weight, 6.0 kilos, - 23 22 106 735 
6 | Child, 8 tog mos. old; weight, 11.5 kilos,| 50 59 62 \aroleu 

* “As calculated” (by use of the factors 4.1 calories per gram of protein and carbo- 
hydrates, and 9.3 calories per gram of fats) for comparison with the others, By actual 
determination, 1090 calories. 
Iand2, Dietaries Nos. 1 and 2 are reported by Forster (Ztchr. f. Biol., 9, p. 405). . 
The child in No. 1 was strong, healthy, and well nourished. Its parents were poor 
working people. No. 2 was rather sickly. Its parents were in comfortable circum- 
stances. 
3, 4,5. Dietaries Nos. 3, 4, and 5 are reported by Camerer. No. 3, a girl, “ brought 
up on mother’s milk” (Ztchr. f. Biol., 33, 15, p. 521). No. 4, a girl (ézd, 1892, p. 227). 
No. ae prematurely born child, brought up on artificial infants’ foods (1074, 235 56 
Pp. 521). 
6. The average of the digestion experiments here reported. The figures given rep- 
resent food consumed, not food digested. 
It has been assumed by various authorities that a child under 
two years of age will, on an average, require approximately 
from one-fourth to three-tenths as much food as an adult man. 
The average. energy per day in the five dietaries of German 
children above (Nos. 1-5), is 715 calories, which is a trifle less 
than one-fourth of the energy of Voit’s standard for a man at 
moderate muscular work (3050 calories). "The fuel value of 
the food of the American child above is 1oro calories, practi- 
cally three-tenths of that of the standard suggested by Atwater 
for a man at moderate muscular exercise (3500 calories). This 
value (.3) is the one used provisionally in the calculations of 
dietaries as explained on page 119. ‘ 
It may be of interest to note here that a rough qualitative 
test showed but a comparatively small amount of calcium salts 
and of phosphoric acid in the feces while the ash of the milk 
and of the oatmeal contained these substances in relatively 
large amounts. 
