OF THE VAPOURS OF BENZENE AND TTS HOMOLOGUES. 
515 
Table XY.—Absorption Bands in the Spectrum of Cymene Vapour at 
Different Temperatures and Constant Pressure. 
Abbreviations :—f., feeble ; b., broad. 
17° • 5 C. 
40° C. 
70° C. 
100° 0. 
A. 
A. 
A. 
A. 
Weak bands 
27191 , 
272° 1 1 
27261 
not easily 
13 /*• 
15 ; b - 
13/ 
measured 
26761 , 
72 /*• 
121 
07 
69 
26771 5 
26761 
61 .p 
73 J b ‘ 
72/ 
5Sl f 
69T, 
61 j b - 
681 
42 J f - 
60 J 
3si 
32 J r - 
6°1 h 
581 
53 J b - 
52 j 
2S1 
21 J ' 
491 , 
381 
L 
42 ; b - 
34 j 
r 
25921 . 
381, 
34 j b ' 
321 
L 
81 / h 
24 j 
281 , 
19 J b ' 
2599 1 
93 J 
> 
2591 1 , 
87 J b - 
911 
L 
84 j 
r 
7 bands 
9 bands 
9 bands 
All rays beyond X 2580 are completely absorbed. 
Table XYI.—Absorption Bands in the Spectrum of Mesitylene Vapour at Different 
Temperatures and Constant Pressure. 
Abbreviations: — £, feeble; v.b., very broad. 
d 
o 
00 
T—H 
45° C. 
A. 
>S O 
O 
100° C. 
A. 
120° C. 
A. 
140° C. 
A. 
27171 f 
12 J 1 ’ 
091 
05 J 1 ’ 
27171 
12 J 1 ' 
091 
06 J 1 ' 
27171 , 
12/ • 
1.21 
06 / 
27371 , , 
07 | f .Y.b. 
Very feeble 
throughout. 
All rays 
absorbed 
beyond 
A 2749 
All rays beyond X 2705 are completely absorbed. 
3 u 2 
