

EXPERIMENTS ON DIGESTION OF FOOD BY MAN. 1623 
DIGESTION EXPERIMENT NO. 4I. 
Kind of food: Mixed diet. Swdject: Waboratory janitor 
(E.0.). Weight (without clothes): At beginning, 66.8 kilos; 
at end, 66.7 kilos. Duration: Five days, with fifteen meals. 
















TABLE 38. — 
6 a « 1 * Ge gv 
og ag) #5 | 2S og aed 
7, Oe oo S ee) ae = 23 28 
a= Foop MarTERIALS. ae ee =< Pa y = 
43 ge gs Bo Oia eee 
a Sie Ja) 
: Grams|Grams|/Grams|Grams Grams|Grams| Cal. 
2705. Beef, fried, - ~ ~ SEO ho a74. 2) B74 iv), Were palyOo 
2796 | Beef, dried, - - - 125 SAME AO 4,— 9 199 
2798 | Eggs, boiled, - - - Oto Lae amy 2 66 | — 5 | 1028 
2501.) Butter, - - - - 75 65 I Ek) ae 3 595 
2800 | Milk, - - - Se 2S 78 351 | LOl* sl 5Ocmeenl 2 escuela S 
2004.) Bread, rye, ~ - - - 750 420 | 63 A Woe 3 28030 
2760") Sugar, - - - - S25 6225 .| — 225; — 892 
2797 | Beans, baked, - ~ 625) 169) 39’ Gat 24 eer 786 
— | Pears, canned, - 750| 144 2 4 | 138 2 577 
— Alcohol, - - - . 348) 592 | — — | 592/ — | 2460 
(otele age = || =) 17345. 2412) 525 | 343°) 1544 [70 112045 
2809 | Feces, - - - - ADA. 1.07 AS 22 Ph lod Xo) 632 
— | Am’t (digested) available, Sr e3Is A77) S20 | tS i | ee me Deo 
; ho fo to % | *% 
— | Per cent. available, - - — | 96.0] 90.9 | 93.6} 98.3] 75.0} — 
— Estimated heat of combus- 
tion of urine, = - — a oo — — — 596 
— | Energy of food oxidized in 
the body, - - - — }; — | — | — | — | — {10787 
% 
— ' Per cent. energy available, | — ae = = a — | 89.8 




Remarks.—This experiment, which represents the preliminary period of 
metabolism experiment No. 7, began with breakfast June 3, 1897, and con- 
tinued five days. Alcohol was substituted for a portion of the carbohydrates 
and fats of an ordinary diet. During the five days of the experiment 363 grams 
of absolute alcohol was consumed, of which, according to the results obtained 
in the second period, 15 grams was eliminated from the body unchanged. As 
the potential energy of r gram of alcohol is approximately equivalent to that of 
I.7 grams of carbohydrates the remaining 348 grams is assumed as corresponding 
to 348 x 1.7 or 592 grams of carbohydrates. The subject did but little work, 
remaining as quiet as was practicable. The following table shows the income 
and outgo of nitrogen. ‘The urine for the first day was not collected, that for 
the second day appeared abnormal and was discarded. 
Income and outgo of nitrogen in digestion experiment No. 41. 
GaIn + or Loss — 








A 22 og | og 
| ye "Do'e Nitrogen in | 29 3.8 
Be PERIOD. ys oD Urine. 3 ey 5 = Nitro- | Protein. 
yan ie ame ie Bn raelag Lae ae gen.  |N.<6.25- 
Ay \ \ : 
A, a my . 
1897. Grams. |PerCt.| Grams. |Grams| Grams.| Grams. | Grams. 
NJune 5-6, 7A.M.-7A.M., | 1073 |1.78) I9.1 | 1.5 | 16.8 | —3.8 | —23.7 
16.8 | — .6 | — 3:8 
5 
Pa ae LO 30). = 32. iae e200 
5 | BO.g | 7,0 b==47.5 
June 6-7, 7A. M.-7 A. M., 937 |1.70| 15.9 
June 7-8, 7A. M.-7 A. M., 1845 |1,00] 18.5 
it 
= 
ial = = = = |°3855 | 4-48) 53.5 | 4. 









