128 
The experiments are grouped in Table 113 according to their char- 
acter, whether rest or work, and subgrouped according to the person 
serving as subject. AVith E. O. there were made 9 rest experiments 
covering 33 days, of which two. Nos. 7 and 10. reported in an earlier 
bulletin of this Office* were made for a special purpose. In Table 
113 the results are averaged both with and without these two experi- 
ments. One rest experiment was made with A. W. S. and 3 with J. 
F. S. In all these experiments the ration was determined as far as 
possible by the food requirements of the subject under the particular 
conditions. The amount of nitrogen in the food in the rest experi- 
ments with E. O. averaged 18.8, with A. W. S. 15.5, and with J. F. 
S. 16.5 grams per clay. The amount metabolized was approximately 
in the same proportion. The amounts of carbon and energy in the 
food were also larger with E. O. than with the other subjects, but 
there was comparatively little difference in the amounts actually 
metabolized. The daily amount of energy averaged 2,280 calories 
with E. O., 2,304 with A. W. S., and 2,117 with J. F. S. 
Two work experiments covering 8 days were made with E. O., and 
•1 covering 12 days with J. F. S. The quantity of nitrogen, carbon, 
and energy in the food and in the material actually oxidized was greater 
in the case of E. O. than J. F. S. The amount of muscular work per- 
formed was also larger. The quantity of nitrogen in the food and in 
the material actually metabolized was, however, not greatly different 
from the corresponding amounts in the rest experiments. The energy 
of material oxidized averaged 3,805 calories with E. O. and 3,517 
calories with J. F. S. The agreement between the values for net in- 
come and net outgo differed through limits which are doubtless within 
the range of experimental error and physiological uncertainties. 
Further discussion of the results obtained in the experiments will 
be found in the more general tables following. 
FOOD MATERIALS SUPPLIED AND CONSUMED, AND THE DIFFER- 
ENCE IN DEMAND BY MEN AT REST AND AT WORK. 
One of the objects of these experiments is to accumulate informa- 
tion regarding the demands of the body for food with different per- 
sons and under different conditions of rest and work. Data bearing 
upon these questions are found in all of the experiments. The 
detailed tables show the total amounts and the composition of the 
food, drink, and excretory products. The figures in Table 114 sum- 
marize very briefly some of the principal results. 
a TJ. S. Dept. Agr., Office of Experiment Stations Bui. 69. 
