13G 
PROFESSOR W. N. HARTLEY AYD MR. W. E. ADENEY 
The Spectrum of Mercury. 
Scale- 
numbers. 
Description of lines. 
Wave¬ 
lengths. 
Remarks. 
24-05 
TVeet steong, continuous, much ex 
J tended, sharp. 
4358-0 
All the lines in this spectrum were 
24-61 
| Faint, continuous, fine. 
43480 
measured from a prism photo- 
25-03 
t_Faint, continuous, fine. 
4341-0 
graph, and are therefore printed 
41-56 
Weak, continuous, fine. 
4077-5 
in Italics. 
43'76 
IVery strong, continuous, much ex 
Several lines due to tin are visible 
J tended, sharp. 
4046-5 
in the photographs, but they are 
48-19 
| Vert steong, continuous, much ex- 
tended, sharp. 
39840 
not recorded here. 
57-65 
Weak, continuous, nebulous . 
38590 
60-85 
Weak, continuous, nebulous . 
38200 
61-90 
J Faint, continuous. 
38070 
62-45 
\ Faint, continuous 
38000 
63-31 
Strong, continuous. 
3790-0 
65-04 
f Weak, continuous. 
37700 
66-34 
\ Faint, fine, continuous. 
3754-7 
66'65 
Strong, continuous. 
-375 1 0 
72-82 
Weak, continuous, nebulous . . . 
rA triplet of fairly strong, con-~i 
3681-9 
74- 60 
75- 37 
77-37 
tinuous, sharp, much extended 
lines, with a nimbus, the 
1 most refrangible line being 
the strongest and most ex- 
* 
36629 
3654-4 
3632-9 
tended 
84-47 
f Strong, continuous, fine .... 
\ Strong, continuous, fine .... 
3560-1 
86-27 
3542-3 
91-52 
Very faint, short. 
34926 
93-60 
Very faint, short. 
3473-4 
96-04 
Very faint, short. 
3451 4 
103-00 
Strong, continuous, somewhat nebu- 
lous, extended. 
3389-5 
105-84 
Faint, discontinuous, fine .... 
33655 
107-58 
Weak, nebulous, continuous . 
33512 
108-79 
Strong, continuous, extended . . 
3341-2 
123-40 
Faint, short fine. 
3226-4 
! 
126-02 
Weak, continuous, fine, faint in the 
centre. 
3207-1 
137-08 
/ A pair of very strong, continuous, 
3130-4 
137-95 
1 much extended lines, with a nimbus 
3124-5 
142-50 
Faint, fine, continuous. 
(. 30940 ) 
Possibly due to an impurity. 
154-12 
Strong, continuous, with a nimbus 
extended . 
30210 
163-37 
Very strong, broad, with a nimbus, 
extended . 
2966-4 
166-86 
Strong, continuous, fine, extended . 
29466 
168-84 
Weak, discontinuous, fine .... 
2935-5 
170-70 
Weak, continuous, fine. 
2925-2 
172-50 
Weak, continuous, fine, faint in centre 
2915-3 
176-63 
Strong, continuous, sharp, extended 
2892 9 
185-45 
Very strong, continuous, broad, some- 
what nebulous, extended '. 
2846S 
188-34 
Faint, continuous, fine . 
2832-1 
191-04 
Strong, continuous, nebulous 
2819-7 
192-80 
Faint, discontinuous, nebulous . 
28100 
193-90 
Fairly strong, continuous, fine, weak 
in a centre . 
2804-5 
