798 
The lowest value of the warm period in M's experiments (1052) 
is distinctly higher than the highest of the cold period (988.5). 
Likewise with N viz. the one 977.2, the other 922.7. 
On the days of the higher values either subject felt, as if the 
muscular work required a greater physical exertion than on other 
days, though they were both in good health and followed their daily 
routine. 
In noting the average increase of the absorption of oxygen, result- 
ing from the pedalling, we find: 
with ZE ‘helow 204° §63—323.5 4415 
above 214° 1277—244.5 = 933.2, 
a difference of 491.7 (nearly 112 °/,). 
With N below 213° 791 -—268.8 = 522.2 
above 204° 1034.9—260.8 = 774.1, 
a difference of 251.9 (rather more than 48 °/,). 
The numbers expressing the carbon-dioxide output are running 
parallel to those indicating the oxygen-intake. This tallies with the 
approximate accordance of the respiratory quotients of the experi- 
ments made at a temperature higher than 20'/,° and 21*/,°, with those 
of the other experiments. 
In the case of N the temperature under the clothes, on the 
cessation of the pedalling was: 35—35'/,° C., the relative moisture 
65—90°/,, throughout the whole period above 204°. In the period 
below 204° the former varisd from 30° — 34°, the latter from 
30°/,—47°/,. 
With V.#H. those values were: 
in the period above 214° : 34— 35'/,° 
90—100°/, 
= , below 214° : 30— 34'/, 
40— 75°/, 
As regards the respirations per minute and the tidal air at the 
end of the pedalling experiments we find: 
number 
of respir. per min. Tidal air 
average with V.M. below 215° 12 1009.6 
above 213° 16.2 1444 
with N. below 203° 20.1 840.7 
above 20%° DAE 1003.5 
We see, therefore, that the number of respirations per minute 
remains fairly constant, whereas in the warm season the tidal air 
is considerably augmented, viz. 
