ON THE MEASUREMENTS OF WAVE-LENGTHS. 
107 
The Spectrum of Copper (continued). 
Scale- 
numbers. 
Description of lines. 
Wave¬ 
lengths. 
Remarks. 
274- 89 
275- 87 
276- 45 
277- 88 
278- 57 
279- 81 
280- 85 
282-63 
284- 45 
285- 31 
286- 15 
286- 63 
287- 93 
289- 63 
290- 35 
291- 51 
292- 33 
295-51 
297- 68 
298- 31 
299- 40 
301- 90 
302- 21 
304-39 
307-35 
309-17 
309- 57 
310- 13 
314-07 
314-59 
316- 83 
317- 79 
321-25 
333- 46 
334- 7 
335- 88 
336- 80 
336-98 
338- 02 
339- 66 
342- 87 
343- 67 
347- 92 
348- 55 
348-78 
352-05 
354- 41 
355- 27 
355-50 
357-10 
357-32 
Faint, very fine and short. 
Very faint, short. 
f Fairly strong short line. 
\ Weak short line. 
Very short, nebulous. 
Very short, nebulous. 
Very short, nebulous. 
Very short, nebulous. 
Very short, nebulous. 
Weak, very short. 
Weak, very fine, discontinuous . 
Very faint and short. 
Very faint and short. 
Very faint and short. 
Very faint and short. 
Weak, short, fine. 
Very faint, short. 
Weak, very short, fine. 
Weak, very short, fine. 
Strong, short, fine line. 
Strong, short, fine line. 
Very faint, fine. 
Very faint and fine, very short . . . 
Very faint, short, fine. 
Weak, short, sharp, fine. 
f Faint, fine, short. 
<( Very strong, long, broad. 
Faint, fine, short line. 
f Fairly strong, short. 
\ Faint, short. 
f Faint, fine, short. 
\ Faint, fine, short. 
Weak, short. 
f Very faint, short, and very fine . 
< Very faint, short. 
l_ Very faint, short. 
f Strong, sharp, fine, discontinuous, ex- 
J tended. 
| Weak, sharp, fine, discontinuous, less 
extended . 
Weak, short, fine. 
Weak, short, fine. 
Faint, short, fine. 
Strong, fine, discontinuous, extended, 
somewhat nebulous on more refran¬ 
gible side. 
Faint, short line. 
/Weak, fine, short, nebulous .... 
[ Weak, fine, short, nebulous .... 
Faint, short. 
Faint, short. 
f A pair of double lines, each consist-''} 
ing of a rather long, very j 
STRONG, sharp, fine, and extended 
line, and a weak, discontinuous, 
^ nebulous line J 
2478-2 
24751 
2473-2 
2468-4 
2465-2 
2461-5 
2458-2 
2452-5 
2446-7 
2444-1 
2441-6 
2439-8 
2435-7 
24303 
2428-2 
2425-1 
2422-0 
2412-2 
2404-8 
2403-3 
2400-1 
2393-0 
2392-2 
2385-2 
2376-7 
2371-6 
2370-1 
2368-7 
2357-2 
2355-0 
2348-8 
2346-2 
2336-6 
2303-8 
2300-5 
229T5 
2295-0 
2294-6 
2291-4 
2286-7 
2279-6 
2277-0 
2265-8 
2263-9 
2263-2 
2257-7 
2250-0 
2248-2 
2247-7 
2244-0 
2243-5 
An approximation. 
