514 
DR. WALTER NOEL HARTLEY ON THE ABSORPTION SPECTRA 
Table XIV.—Absorption Bands in the Spectrum of Paraxylene Vapour at Different 
Temperatures and Constant Pressure. 
Abbreviations;—s., strong; f., feeble or faint; b., broad; n., narrow; s.b., sharp, 
broad; s.n., sharp, narrow; f.n., faint, narrow; f.b., feeble, broad. 
10° C. 
A. 
\ 
b. 
f.b 
s.b. 
2747 
39 
38 : 
32 
30 ; 
26 
19 
14 
00' f. 
2688 
\ 78' 
70 
68 s.n. 
65' 
54 
52 
47 
45 ; 
44 
42 : 
41 
34 
33 
30 
\ 
\ 
24 f. 
99 ' 
n. 
\ 
9n 
\ 
\ 
S 
s 
19 
18 
15 
12 
06 
02 
599 
97 
88 
87 
66 
62 
60 
541 
52/ 
41 
37 
36 
34 
33 
32 
16 
07 
00 
b 
n. 
b. 
n. 
f. 
:b 
b 
40° C. 
A. 
si 
b. 
f. 
30 bands 
\ 
I 
\ 
27471 , 
39 J b 
38~ 
3 
30 
26 
22 
19 
16 
12 
09 
06 
02 
2698 
94 
85 
83 
81 
78 
69 
68 
65 
55 
52 
47 
42 
40 
35 
31 
25 
23 
19 
19 
14 
id 
“SIP 
85 n. 
62 f. 
60 f. 
:} 
D. 
b. 
n. 
n. 
b. 
n. 
f. 
f. 
n. 
b. 
70° C. 
A. 
b. 
n. 
n. 
2791 
84 
77 
73 
68 
66 
63 
50 
There is intense absorp¬ 
tion from A 2762 to 
2416. The rays from 
A 2416 to 2265 are 
transmitted. Hence 
the above is an intense 
and very broad absorp¬ 
tion band. 
100° c. 
A. 
25 bands 
6 bands 
2802 
00 
2795 
94 
85 
83 
78 
77 
69 
66 
65 
5 
f.n. 
f.b. 
b. 
f.b. 
b n. 
d 
There is an intense ab¬ 
sorption band from 
A 2790 to 2416. The 
rays from A 2416 to 
2288 are transmitted. 
8 bands 
