Nitrogen Output.
Taken in. Nitrogen in Urine. Weight of Fæces (dry).
May 18 14.249 grams. 8.87 grams.
19 9.295 8.36
20 13.911 9.95 12.0 grams.
21 10.161 8.51 46.0
22 9.512 6.50 39.0
23 11.488 6.90 67.0
24 12.226 8.45
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164.0 grams contain 6.92% N.
80.842 57.54 + 11.349 grams nitrogen.
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80.842 grams nitrogen. 68.889 grams nitrogen.
Nitrogen balance for seven days = +11.953 grams.
Nitrogen balance per day = +1.707 grams.
Average Intake.
Calories per day 3091
Nitrogen per day 11.55 grams.
With G. W. Anderson, the balance trial was characterized by an intake
of 80.842 grams of nitrogen, with an output for the seven days of 57.54
grams through the urine and 11.349 grams through the fæces, thus making a
total excretion of 68.889 grams of nitrogen, and showing a plus balance
of 11.953 grams. In other words, the body of this subject, under the
conditions prevailing, was storing up nitrogen for future use at the
rate of 1.7 grams per day. This also means that a daily intake of 9.8
grams of nitrogen would have been quite sufficient to maintain nitrogen
equilibrium, certainly with the large fuel value of the food taken, _i.
e._, 3091 calories per day as the average value.
The average daily excretion of metabolized nitrogen during the balance
period amounted to 8.22 grams, while the average daily excretion for the
last two months of the experiment was 8.81 grams.
* * * * *
With Stapleton, the following results were obtained, showing a distinct
positive balance: