THE UTILIZATION OF ENERGY. — 505 
WALKING WITHOUT LOAD OR DRAFT. PERIOD a. 
Per Kg. Live Weight. 
Observed. F 
; Oxygen Equivalent 
No. of Live Per Minute. ay er 
Experiment. | Weight Work of 
Kgs. : Ascent, 
Distance | Work of |Per Meter | Per | Per Meter 
Oxygen | Traveled | Ascent, | Traveled. |Minute,| Traveled. 
C.c. Meters. Kgm. Gr.-m. c.c. c.mm. 
AOE: seie vanes 429 9.0 57 0.57 10 5.1 89 
44b......... 434 11.3 87 0.84 10 7.3 84 
BD ssc x tue 428 12.2 94 0.89 9 8.2 88 
45d......... 428 12.7 95 0.87 9 8.7 92 
46b......... 430 10.8 92 0.70 8 6.9 74 
AGC see etes 430 11.7 99 0.74 8 7.8 79 
TD ic ie oe i 434 12.3 98 0.79. 8 8.4 86 
BUC vccseinaisnets 434 11.2 93 0.76 8 7.3 78 
Average ...| 430.9 | 11.405 | 89.338 | 0.764 8.643 | 7.463) 83.793 
Corrected 2) s scsi ds ceccns Sb el] a'g cranes le deo eaves Sexakadie «| ogee 85.888 
If from the oxygen consumption in each of the above experiments 
we subtract the average rest value for the same period (3.94 c.c.) 
the remainder will represent the increase due to the work, as shown 
in the seventh column, and this divided by the distance traveled 
gives the figures of the eighth column. 
The average respiratory quotient of that part of the respiration 
due to the work in these eight experiments was 0.894. On the 
very probable assumption that the work caused no material change 
in the metabolism of either proteids * or crude fiber, or in other 
words, that the energy for work was derived substantially from solu- 
ble carbohydrates and fat, the calorific equivalent of 1 ¢.c. of oxygen 
is computed and the following calculation of energy made for the 
average of the eight experiments (compare pp. 76 and 251). These 
results are not corrected for cutaneous and intestinal respiration. 
Per Kg. Live Weight per Minute. 
Oxygen combined with fat ............... 3.4415 ¢.c. 
Oxygen combined with starch............. 4.0215 “ 
Totals: aiincccneenvr en eiwade eaueiia ves 7.4630 “ 
Equivalent energy .........-.-...5-- 36.420 cals. 
* The authors show that even a considerably increased proteid meta- 
bolism would not materially affect the computation of energy. 
