THE PHENOMENA OF HUMAN RESPIRATION. 
3 
By considering together the temperatures of the air when tlie different experiments 
were made, and corresponding weights of carbonic acid expired, as stated in Dr. Meemod’s 
Tables, a very remarkable influence of the temperature at the higlier station will be 
found. In order to show this, I have extracted from Dr. Mermod’s paper, and 
placed opposite each other in a tabular form, the mean weights of carbonic acid expired 
at both stations for each degree of temperature—from 9° to 10°, 10° to 11°, and 
so on :— 
Temperatures at 
time of 
experiment. 
Strasburg. 
COo expired per 
minute. 
Ste. Croix. 
COo expired per 
minute. 
Increase for Ste. Croix, j 
o o 
9 to 10 
0-392 
0-387 
Per cen 
0-0 1 
t. 
10 „ 11 
0-394 
0-419 
6-0 
1 mean 
r 3-1 
11 „ 12 
0-388 
0-401 
3-2 
12 „ 13 
0-374 
0-.397 
5-8 '] 
mean 
' 7-0 
13 „ 14 
0-373 
0-393 
5-1 
14 „ 15 
0-371 
0-413 
10-2 J 
First of all we observe that, as the temperature increases at the lower station, the 
weight of carbonic acid expired per minute as a rule falls, while at the higher station 
the weight of carbonic acid expired per minute is nearly the same at every tem¬ 
perature. 
If, on the other hand, the weights of carbonic acid expired at Strasburg and 
Ste. Croix be compared with each other for similar temi^eratures, we find no increase 
of carbonic acid at Ste. Croix for the lowest temperature (9° to 10°), although a 
considerable increase, amounting to 10"2 per cent., at the highest temperature. By 
collecting the temperatures and corresponding weights of carbonic acid into two 
groups, the group for the low^est temperatures will give an increase of carbonic acid of 
only 3'1 per cent, for Ste. Croix (the highest station), while the group for the highest 
temperatures wfill show an excess of carbonic acid of 7’0 per cent, for that same 
station. 
The analysis of the tables in another form yields a similar conclusion. T liave 
disposed as follows the figures for carbonic acid corresponding to the ten lowest and 
ten highest temperatures for each station :— 
