35 
different varieties of fruit and six of nuts were experimented with. 
The subjects ate ad libitum of the fruits and nuts decided upon for the 
experiment. In some eases the diet of a single fruit or of a fruit with 
nuts proved so unpalatable that it was deemed best to supply small 
amounts of olive oil. tomatoes, or other materials in addition, in a 
number of cases these articles being taken simply as relishes. When 
this was done the diet was regarded as palatable. It is to be regretted, 
however, that owing to the difficulty of following such a diet for any 
length of time only two experiments were made with a single fruit. 
EXPERIMENTS WITH W. S. M. 
The experiments with each 
Those with W. S. M. follow: 
»f the subjects are grouped together, 
DIGESTION EXPERIMENT NO. 388. 
Kind of food. — Grapes, with small quantities of olive oil. tomatoes, 
and olives. 
Subject.— Vf. S. M. 
Weight (with clothing). — At the beginning of the experiment 56.3 
kilograms (124 pounds) and at the close 55.3 kilograms (122 pounds). 
Duration. — Four days, with twelve meals, beginning with breakfast 
November 19, 1901. 
Table 15. — Results of digestion exj)erimerd No. 388. 
Sam- 
ple 
No. 
Kind of food. 
Weight Total 
of ma- organic 
terial. matter. 
Nitro- Pro- 
gen, tein. 
Fat. 
Carbohydrates. 
Heat of 
Ash. combus- 
| tion. 
Sugar. 
starch, . Fiber. 
etc. 
205a 
202a 
207a 
49 
Grapes. Tokay 
Grapes, Muscat... 
urn pes Ccmichon 
Olive oil 
Tomatoes 
Olives 
Total 
- water-free) 
Amount digested. 
Per cent digested. 
Energv of urine . . 
Grams. Oram*. 
4,835 481.07 
649 B3. 45 
4. 305 407. 93 
52 52. 00 
Grams. Grams. 
4. 02 25. 14 
.73 | 4.54 
3. 51 21. % 
Grams. 
5. ,80 
2.01 
6.89 
52.00 
Grams. Grams. 
4:34. is : 15.95 
74.-56 . 2.34 
377.10 1.98 
Grams. Calories. 
11.12 2,040 
1.10 357 
12.05 1,732 
483 
32 
240 
58 3.01 
113 35. 15 
.08 .52 
.46 
.23 
26.00 
1.91 , .35 .29 14 
2.85 ■ 3.45 5.90 282 
10,012 1.062. h] , s.sQ 55.01 92.93 
890.60 24.07 ' 30.46 4.908 
18a 
127., 4 111.33 
951. 28 
4.s9 30.55 29.96 
3. 91 24. 46 62. 97 
44.43 44.46 67.76 
37.05 13.77 16.41 . 688 
853.55 10.30 14.05 i 4,220 
89. 52 
95.84 42.80 46.13 1 86.00 
31 
Energy of food 
oxidized in the 
! 
4.189 
Per cent of energy 
utilized 
85.35 
During the experiment the subject eliminated 5,692 grams urine, 
containing 0.33 per cent or 18.69 grams nitrogen. The average nitro- 
gen balance per day was therefore as follows: Income in food 8.8 
grams: outgo in urine -1.67 grains, and in feces 1.22 grams; indicating 
a loss of 3.69 grams nitrogen, corresponding to 23.06 grams protein. 
