122 STORRS AGRICULTURAL EXPERIMENT STATION. 
TABLE 29. 
Percentages of total energy given off from the body in different 





Ways. 
H In rest — In work 
ior experiments. | experiments. 
7o Jo 
From skin by radiation and conduction (and in 
exhaled air), - - - - - - 7Aso 62.3 
In urine and feces, - - - - - 1.4 5 
In water vaporized from ees and skin, - - 24.4 30.8 
Heat equivalent of external muscular work done, — 6.4 
Total, - 2 - - - - -  “TOORO 100.0 

Energy given off from the body in different periods of the day. 
—TTable 30 summarizes the data for the outgo of energy during 
the different periods of the day in the seventeen experiments, 
covering fifty-seven experimentaldays. Asin the two previous 
- tables, the figures for heat eliminated include (1) the quantity 
given off from the body and measured by the calorimeter, (2) 
that given off in the water vaporized during the same periods, 
i. e., carried away from the body in water vapor, and (3) the 
heat equivalent of the external muscular work done. The 
temperature of the body and the amount of material it contains 
varies somewhat from time to time. It is assumed that at the 
hour when the experimental day begins and ends, 7. A. M., 
they will be very nearly the same from day to day. If they are 
the same at these times the total quantity of heat in the body 
at the beginning and end of each experimental day will be the 
same. The total quantity of energy given off from the body 
during the day will in this case be equivalent to the total 
amount liberated within the body, and will be closely parallel 
with the amounts of carbon and hydrogen oxidized. Taking 
each of these four periods of the day by itself the differences 
between the amounts of heat stored in the body at the begin- 
ning and end will probably be larger than is the case for the 
whole day. For individual periods, therefore, the parallelism 
between the amounts of carbon oxidized and heat given off will 
hardly be as close as for the whole day. 
