of Edinhurgh, Session ^‘6, 41 
Time. 
Pressure. 
. Time. 
Pressure. 
m. 
s. 
m. 
s. 
2 
41 
9336-3 
6 
47 
9397-0 
3 
10 
9341-4 
7 
8 
9402-1 
3 
35 
9346-4 
7 
15 
f Steam issuing 
3 
55 
9351-5 
1 freely. 
4 
16 
9356-5 
7 
25 
9407-1 
4 
37 
9361-6 
7 
48 
9412-2 
4 
57 
9366-7 
8 
33 
9417-3 
5 
16 
9371-8 
10 
20 
9419-4 
5 
45 
9376-8 
12 
45 
9420-6 
6 
0 
9381-9 
18 
0 
9421-6 
6 
13 
9386-9 
20 
0 
9421-8 
6 
30 
9391-9 
XXIV. Dry Air . — The mixture of air and olefiant gas contained 
in the absorber in Experiment XXIII. was displaced by a current 
of dry air of about 47 c.c. per second (as determined by experiment), 
which was drawn through the apparatus for seven hours. At the 
end of that time (as determined by calculation) only about 
*2 X *0005 or *0001 per cent, of the gas contained in the absorber 
would he olefiant gas.^ A set of observations was made with this 
practically pure air, the temperature of the water jacket being 
12°*9C. 
Time. 
Pressure. 
Time. 
Pressure. 
m. 
s. 
m. 
s. 
0 
0 
9375-2 
5 
45 
9417-5 
0 
51 
9374-2 
6 
20 
9422-6 
1 
18 
9377-3 
7 
0 
( Steam issuing 
1 
46 
9380-3 
\ freely. 
2 
0 
9382-3 
7 
3 
9427-6 
2 
30 
9387-3 
.7 
47 
9432-6 
3 
13 
9392-4 
9 
15 
9435-6 
3 
43 
9397-4 
10 
15 
9436-6 
4 
13 
9402-4 
14 
0 
9437-7 
4 
40 
9407-5 
22 
0 
9438-2 
5 
15 
9312-5 
1 If v is the volume of air entering in unit time, w the percentage of olefiant 
gas present after t units of time, Wq the percentage present at beginning, and 
V the volume of the reservpir, 
V 
V' = Wffi 
