ON THE MEASUREMENTS OF WAYE-LENGTHS. 
131 
The Spectrum of Bismuth (continued). 
Scale- 
numbers. 
Description of lines. 
Wave¬ 
lengths. 
Remarks. 
77-29 
Weak, very short. 
3631-9 
79-21 
Yery strong, nebulous, short . 
3613-8 
80-99 
Strong, fine, continuous. 
3595-7 
86-40 
Strong, short. 
3541-5 
87-91 
Fairly strong, very short. 
3527-9 
88-97 
Faint, short, nebulous. 
3517-9 
89-69 
Strong, fine, continuous. 
3510-5 
92-37 
Strong, short, nebulous. 
3485-0 
93-65 
Strong, short, nebulous. 
3473-5 
95-59 
Weak, discontinuous, fine. 
3454-8 
96-12 
Strong, short. 
3450-7 
98-40 
Strong, discontinuous. 
3430-9 
102-25 
Strong, continuous, sharp. 
3396-7 
102-81 
Weak, short, nebulous. 
3393-2 
103-91 
Weak, fine, continuous. 
(338L9) 
A tellurium line probably. 
112-03 
Faint, very short. 
33153 
114-03 
Weak, short .. 
3297-9 
115-29 
Weak, discontinuous, nebulous . 
3287-4 
116-45 
Weak, fine, continuous. 
(3279-9) 
A tellurium line probably. 
119-58 
Faint, nebulous, short. 
3255-4 
122-03 
Weak, short. 
32368 
128-75 
Faint, nebulous, short ,. 
3187-7 
131-28 
Faint, short. 
31700 
132-73 
Faint, short. 
31600 
137-01 
Faint, short. 
3130-8 
139-42 
Strong, nebulous, short. 
3114-8 
140-11 
Weak, discontinuous, fine. 
3110-4 
145-42 
Fairly strong , fine, continuous . 
3075-7 
146-85 
Yery strong, broad, continuous, ex- 
tended, sharp . . 
3067-1 
150-75 
Weak, short. 
3041-3 
151-91 
Strong, short. 
3038-0 
152-49 
Strong, fine continuous, sharp . . . 
3034-5 
153-75 
Yery strong, extended, continuous, 
SHARP ..... . 
3023-8 
156-02 
Weak, short, nebulous. 
3009-0 
157-27 
Faint, short. 
3001-2 
158-98 
f Strong, continuous, sharp. 
2992-2 
159-67 
< Strong, continuous, slightly extended, 
sharp . 
2988-1 
160-51 
Weak, continuous, sharp. 
2982-9 
The strong lines in this portion of 
162-68 
Short, faint. 
2973-4 
f the spectrum form a charac- 
163-27 
Short, faint. 
2968-9 
teristic group. 
166-08 
Weak, discontinuous, nebulous . 
2951-0 
167-29 
Faint, very short. 
2942-4 
168-52 
Yery strong, continuous, extended, 
2942-4 
sharp ... 
169-46 
Weak, very short. 
2931-4 
171-03 
Faint, very short. 
2923-2 
172-10 
Weak, very short. 
2917-5 
175-85 
Yery strong, continuous, extended, 
sharp. 
2897-2 
182-45 
Long, fine . 
2862-5 
183-91 
Very strong, short, nebulous 
2854-8 
185-49 
Fairly strong, short. 
2846-1 
186-61 
Weak, very short. 
2840-1 
187-90 
Faint, very short. 
2832-8 
