131 
ELIMINATION OF WATER. 
The water taken into the body in the food and drink and formed 
within it by the oxidation of hydrogen is excreted by the kidneys, 
lungs, and skin. The amount eliminated by the kidneys varies with the 
amounts taken in the food and drink and eliminated in the respiration 
and perspiration', and is, in consequence, very irregular. The amount 
of water given off by the lungs and skin appears to depend largely 
upon the muscular activity of the subject and the temperature of the 
surrounding air. and to be less affected by the income in food and 
drink. 
Jncorru and outgo of water per day. — Table 145 recapitulates the 
figures for the average amounts of water taken in the food and drink 
and eliminated in the various excretions in the 19 experiments. Nos. 
o-ll. 13. 14. 21. 23-26. 28, 29, 31. 32. and 34. In all these experiments 
the days were divided into 0-hour periods. 
Table 145. — Daily income ami outgo of water. 
33 
Days 
cov- 
Subject and kind of experiment. ^Ex- 
peri- 
ments. 
REST EXPERIMENTS. 
E. 0.. 9 experiments: 
Minimum 
Maximum 
Average 
A. W. S., 1 experiment: 
Minimum 
Maximum 
Average 
J. F. S., 3 experiments: 
Minimum 
Maximum 
Average 
Average of 13 experiments . . 
WORK EXPERIMENTS. 
E. 0.,2 experiments: 
Minimum 
Maximum 
Average 
J. F. -..4 experiments. 
Minimum 
Maximum 
Average 
Average of 6 experiments . . . 
Income. 
Outgo. 
In res- 
In 
food. 
In 
drink. 
Total. 
In 
feces. 
In 
urine. 
piration 
and 
perspi- 
ration. 
Total. 
Grams. 
Grams. 
Gram*. 
Grams. 
Grams. 
Grams. 
Grams. 
653 
1.023 
1.945 
35 
1.037 
697 
2. 015 
1,270 
1.-72 
3.047 
98 
3.120 
1. 212 
4,306 
1.037 
1.407 
2. 444 
59 
1,810 
977 
2. -46 
890 
1,384 
2. 274 
46 
1, 628 
821 
2. 496 
890 
1,385 
2. 275 
46 
1,909 
898 
2.853 
890 
1,385 
2.275 
46 
1.743 
859 
2,648 
1.040 
800 
1.840 
19 
913 
791 
1,811 
1.07- 
900 
1,978 
57 
1.489 
879 
2, 345 
1,055 
833 
1,888 
52 
1.219 
830 
2.101 
1.291 2.322 
939 
2. 6-4 
951 
1.3-4 
1,168 
916 
1.036 
975 
1.200 2,151 
2.100 3,079 
1.603 2.771 
1.250 2,166 
1,250 
1,2.50 
1,052 1.391 
2. 225 
91 
815 
100 
1.275 
96 
1.011 
36 
641 
72 
1.433 
52 
905 
1,762 2.912 
2, 699 3, 981 
2.275 
1.197 
2, 094 
1.670 
3.3-2 
2, 201 
3. 215 
_ 27 
2. 443 
1,912 
2. 929 
The averages given are those for all of the days of the experiments 
of the given group rather than averages of the average results of the 
individual experiments. It is to he remembered that there was eon- 
siderable milk in the daily diet, and this is reckoned as food rather 
