ON ae 
ge 
186 STORRS AGRICULTURAL EXPERIMENT STATION. 
experiment, and those colored by the second capsule were 
excluded. ‘The feces were deposited by each subject upon a 
shallow tray in sucha way as to facilitate separation. . In most 
cases the separations were quite satisfactory, though in some. 
instances, where the cereal had a laxative effect, the point where 
the discoloration began in the final separation of an experiment 
was not as sharply defined as desirable. 7 
The total amount of feces for an experiment for each subject 
was dried and ground for analysis. 
Analysis of food and feces.—Analysis of the food materials and 
feces were made according to the methods adopted by the Asso- 
ciation of Official Agricultural Chemists.* The heats of com- 
bustion were made by means of the bomb calorimeter.t The 
LABLE 82.0 
Percentage composition and heats of combustion of foods and feces 
wn digestion experiments Nos. 558-566. 











| 5 de 
fe) oy = Fs s 
ZA o i rs) ~ Ke! ° oo 
ee KIND OF MATERIAL. = bed g = D we 
« S 2 ° = om 
- x é aes 
a vo 
o) ms 
% % % %e % |Cals. 2 
3671| Grape-Nuts, : - - - | 6.47)11.63) °.77| 78.96| 2.17/4.061 
3677| Malta Vita, - - - - {I1,32/12.20| 1.52) 72.03)°2.93/g.0a" 
3684) Force, = = - - - 110.86] 9.86] 1.65] 74.77| 2.86/3.822 
3672| Milk, 3 - = = - |86.04} 3.31| 4.71} 5.29} .65] .799 
3678] Milk, . e - : - |86,23| 3.19) 4.70) 5.17 os O02 eeeoem 
3685| Milk, - - - - - {86.55} 3.13] 4.30). 5. 41 Gree 
3673| Cream, - - - - - }71.97| 2981/21,58|- 3, 10) eae. one 
3679} Cream, 2 - - - -173.05| 2.56120. 45) 9 3°40) ge tere 
3686} Cream, = = = - |72.73! :2.38|21.00] - 3.4213 4720 26a 
— | Cane sugar, - - - -|— — r— “|TOO, OG us sn eae 
3674| Feces (partially dried), = - | 6.11|20,63}15.92| 40.79|/16.55/5 .040 
3675| Feces (partially dried), - - | 7.16/23 .69|13.79] 41.71|13.65|4.940 
3676] Feces (partially dried), - - | 5.11/20.75|16.02| 42.37/15.75|5.462 
3680] Feces (partially dried), - - | 6.60/21.06)10.65] 43.89/17.80/4 644 
3681| Feces (partially dried), - - | 7.22/22.00/14.41| 42.03|14.3414.824 
3682| Feces (partially dried), - - | 6.33/22.00|/12.00] 45.51/14.16|4.824 
3683| Feces (partially dried), : - | 6.59]19.63|16.08| 42.38/15 .32|4.802 
3687| Feces (partially dried), 3 - | 6.41/19.38) 7.56} 47.94/18.7114.523 
3688) Feces (partially dried), - ~ | 5.14/17.00/33.65| 27.77/16. 44|5 699 0m 

*U.S. Dept. Agr., Division of Chemistry, Bul. 46, revised. 
¢Jour. Amer. Chem. Soc., Vol. 25, No. 7 (1903), p. 659. 
t For cereals, N X 5.70; for milk, cream and feces, N X 6.25. 
2 The unit of energy throughout this article is the large Calorie, i. e., the quantity 
of heat necessary to raise 1 kilogram of water 1 degree Centigrade, 

