PROFESSOR TYNDALL’S CONTRIBUTIONS TO MOLECULAR PHYSICS. 
345 
Table XII. (continued). 
Name of vapour. 
Deflection. 
Absorption per 100. 
Benzol . . . 
.... 31-0 
26-71 
Benzol 
.... 30-0 
25-9J 
Amylene . . 
.... 37-6 
35-6'l 
Amylene . . . 
.... 37-8 
35-9/ 
Sulphuric Ether 
.... 41-1 
43-41 
Sulphuric Ether 
.... 41-0 
43-4J 
Formic Ether 
.... 41-7 
45-01 
Formic Ether 
.... 41-8 
45-3J 
Acetic Ether 
. . . . 43-6 
49-81 
Acetic Ether 
.... 43-4 
49*3 J 
On the 10th of October the following results were obtained with the same platinum 
spiral, raised to a white heat : — 
Table 
Name of vapour. 
Bisulphide of Carbon 
Bisulphide of Carbon 
Chloroform . 
Chloroform . . 
Iodide of Methyl . 
Iodide of Methyl . 
Iodide of Ethyl . . 
Iodide of Ethyl . . 
Benzol .... 
Benzol .... 
Total heat . . . 
Amylene .... 
Amylene .... 
Formic Ether . . 
Formic Ether 
Sulphuric Ether 
Sulphuric Ether 
Acetic Ether . . 
Acetic Ether . . 
Total heat . . 
Source, white-hot platinum spiral. 
Absorption per 100. 
3-5. 2-91 
3-4 2-8/ 
6-7 5-61 
6-7 5-6 J 
9-2 7-71 
9-4 7-9J 
15*4 13-01 
15-0 12*6 J 
19-3 16-61 
19-0 16-4J 
59-2 100-0 
27-6 22-61 
27-7 22-7J 
30-5 25-01 
30- 7 25*2 J 
31- 4 25-71 
31-7 26-OJ 
33-0 27-01 
33-2 27-3J 
60 0 100-0 
XIII. — Radiation of heat through Vapours. 
Deflection. 
3 a 2 
