106 
PROFESSOR W. N. HARTLEY AND MR. W. E. ADENEY 
The Spectrum of Copper (continued). 
Scale- 
numbers. 
Description of lines. 
Wave¬ 
lengths. 
Remarks. 
135-63 
Faint, short. 
3139-7 
There are five faint half lines 
136-40 
Faint, short. 
3134-2 
slightly less refrangible than 
this, too faint to be measured. 
"I 
138-08 
Weak, short. 
31237 
139- 28 
140- 48 
Faint, short. 
Weak, short. 
3115-7 
3107-4 
> Approximations. 
141-92 
Faint, short. 
3097-8 
J 
151-35 
Faint, short. 
3035-6 
153-90 
Faint, shox-t. 
3023-4 
164-53 
Weak, discontinuous. 
2959-6 
178-55 
Faint, short. 
2882-4 
179-56 
Weak, short. 
2877-4 
187-55 
Weak, short. 
2836-5 
190-13 
Weak, short. 
2823-2 
201-36 
Strong, short, sharp. 
2769T 
201-81 
Weak, short. 
2766-2 
206-35 
Weak, short. 
2745-9 
211-80 
0 A triplet of short fine lines, the least f 
2721-2 
212-55 
> refrangible weak, the other two < 
2718-4 
213-71 
J STRONG 
2713-1 
216-10 
f Strong, short, fine line. 
2702-7 
216-58 
\ Strong, short, fine line. 
2700-5 
219-37 
Strong, short, fine line. 
2688-8 
224-70 
Weak, short. 
2666-0 
230-31 
Very faint and short. 
2643-5 
236-45 
Weak, fine, discontinuous, fine . 
2617-8 
238-87 
Faint, short, fine. 
2608-9 
241-10 
f Strong, short, fine line. 
2599-7 
241-58 
\ Strong, short, fine line. 
2598-3 
243-66 
Weak, short, fine. 
2590-1 
248-00 
f Very faint, short, nebulous . 
25730 
There are two or three very faint 
248-28 
\ Very faint, short, nebulous .... 
25720 
lines similar in character to 
248-61 
Faint, short. 
2570-9 
this line, less refrangible, too 
250-11 
Faint, short, nebulous. 
2565-3 
faint to be measured. 
253-29 
f Very faint, short, nebulous . . 
2553-7 
253-70 
Faint, short, nebulous. 
2552-2 
255-94 
Vert strong, discontinuous .... 
2544-6 
257-65 
f Faint, very short, nebulous . . . . 
2538-2 
1 
258-53 
< Faint, very short, nebulous .... 
2533-9 
> Approximations. 
259-25 
f Faint, very short, nebulous .... 
2531-4 
260-25 
1 A pair of strong short lines, the more f 
2528-8 
261-00 
/ refrangible line slightly weaker \ 
2526-2 
261-95 
Very faint and short, nebulous . 
2522-7 
1 
262-21 
Very faint and short, nebulous . 
25221 
> Approximations. 
263-22 
f Very faint and short, nebulous . 
2518-3 
263-79 
\ Very faint and short, nebulous . 
2517-5 
J 
264 - 79 
f Very faint and short, nebulous . . . 
2513-2 
265- 33 
266- 20 
\ Very faint and short, nebulous . 
Weak, very short. 
2512-2 
2508-7 
| Approximations. 
266-77 
Strong, short, sharp. 
2506-2 
269-29 
f Very faint and short, fine. 
2497-4 
269-71 
\ Very faint and short, fine. 
2495-9 
270-91 
f Weak, very fine, sharp, long line . 
2491-4 
271-65 
< Strong, sharp, short, fine line 
2489-1 
272-72 
L Short, strong line. 
2485-6 
273-74 
Weak, very fine, and short .... 
2481-8 
