218 
PROFESSOR TYNDALL ON THE ABSORPTION AND 
Dynamic Radiation of Gases . 
Table XXXIV. — Carbonic Oxide. 
Length. 
Deflection. 
a 
r~ \ 
1st Chamber. 2nd Chamber. 
By 1st Chamber. 
2nd Chamber 
empty. 
By 1st Chamber. 
Gas in 
2nd Chamber. 
By 2nd Chamber. 
2-8 
46-6 
10 
O 
0-0 
28*0 
15-4 
34-0 
3-8 
2-1 
24*4 
36*3 
13-1 
13-7 
6-3 
16-6 
Table XXXV.— Carbonic Acid. 
Length. 
a 
Deflection. 
X 
1st Chamber. 2nd Chamber. 
By 1st Chamber. 
2nd Chamber 
empty. 
By 1st Chamber. 
Gas in 
2nd Chamber. 
By 2nd Chamber. 
2-8 
46-6 
O 
1-0 
0-0 
33-6 
15-4 
34-0 
3-7 
1-25 
23-3 
36-3 
13T 
16-8 
6-6 
17-5 
Table XXXVI. — Nitrous Oxide. 
Length. 
A 
Deflection. 
A 
1st Chamber. 2nd Chamber. 
By 1st Chamber. 
2nd Chamber 
empty. 
By 1st Chamber. 
Gas in 
2nd Chamber. 
By 2nd Chamber. 
2-8 
46-6 
1-0 
6*2 
44-5 
15-4 
34-0 
4-3 
1-2 
31*7 
36-3 
13-1 
19-5 
6-2 
22-0 
Table XXXVII. — Olefiant Gas. 
Length. 
A 
Deflection. 
A 
r N 
1st Chamber. 2nd Chamber. 
By 1st Chamber. 
2nd Chamber 
empty. 
By 1st Chamber. 
Gas in 
2nd Chamber. 
By 2nd Chamber. 
15-4 
34-0 
O 
11-9 
O 
1-0 
68-0 
23-8 
25-6 
22-8 
3-0 
36-3 
13*1 
59-0 
10*4 
65-0 
The gases, it will be observed, exhibit a gradually increasing power of dynamic radia- 
tion from carbonic oxide up to olefiant gas. This is most clearly illustrated by refer- 
ence to the results obtained in the respective cases with the first length of the second 
chamber. They are as follows 
