THE ULTRA-VIOLET SPECTRA OF THE ELEMENTS. 
205 
I. 
IF. 
in. 
IV. 
V 
VI. 
VII. 
A 
Til 
IX. 
hundredths 
wave- 
of an inch. 
. 
// 
. 
/ 
// 
. 
u 
length. 
317 
297 
25 
0 
88 
11-59 
-11 
39 
297 
13 
21 
318 
297 
20 
0 
88 
6-95 
- 6 
59 
297 
13 
1 
319 
297 
20 
0 
88 
6-77 
- 6 
48 
297 
13 
12 
297 
13 
11 
320 
40 
30 
0 
88 
14-13 
+ 14 
12 
40 
44 
12 
51 
45 
31 
(2883-5) 
275 
296 
10 
0 
93 
2-48 
- 2 
29 
296 
7 
32 
276 
41 
50 
0 
93 
0-91 
- 0 
55 
41 
49 
5 
277 
41 
55 
0 
93 
6-00 
- 6 
1 
41 
48 
59 
41 
49 
2 
52 
50 
45 
(2926-1) 
267 
296 
10 
0 
93 
2-85 
- 2 
51 
296 
7 
9 
268 
41 
50 
0 
93 
1-20 
- 1 
12 
41 
48 
48 
•• 
52 
50 
50 
2926-0 
310 
41 
55 
0 
93 
1019 
+ 10 
11 
42 
5 
11 
311 
41 
50 
0 
93 
15-00 
+ 14 
59 
42 
4 
59 
42 
5 
5 
312 
296 
0 
0 
93 
8-16 
- 8 
9 
295 
51 
51 
53 
6 
37 
2928*3 
207 
296 
10 
0 
93 
30-58 
-30 
33 
295 
39 
27 
268 
41 
50 
0 
93 
26-50 
+ 26 
29 
42 
16 
29 
13 
18 
31 
(2943-9) 
275 
296 
10 
0 
93 
30-48 
-30 
27 
295 
39 
33 
276 
41 
50 
0 
93 
26-78 
+ 26 
45 
42 
16 
45 
277 
41 
55 
0 
93 
21-73 
+ 21 
43 
42 
16 
43 
42 
16 
44 
53 
18 
36 
2944-0 
310 
41 
55 
0 
93 
21-95 
+ 21 
56 
42 
16 
56 
311 
41 
50 
0 
93 
26-75 
+ 26 
44 
42 
16 
44 
42 
16 
50 
312 
296 
0 
0 
93 
20-04 
-20 
1 
295 
39 
59 
315 
296 
0 
0 
93 
19-97 
-19 
57 
295 
40 
3 
295 
40 
i 
53 
18 
25 
(2943-9) 
275 
296 
10 
0 
93 
35-50 
-35 
28 
295 
34 
32 
276 
41 
50 
0 
93 
31-94 
+ 31 
55 
42 
21 
55 
U 
277 
41 
55 
0 
93 
26-89 
+ 26 
52 
42 
21 
52 
42 
21 
54 
53 
23 
41 
2947-3 
As in tlie highest region we have used the lines in the spectrum of the spark 
between copper electrodes as lines of reference, we add here the measurements and 
calculated values for these lines, and for the strong magnesium lines which we have 
sometimes used in interpolating. 
Copper Lines. 
I. 
II. 
III. 
IV. 
V 
VI. 
VII 
VIII. 
IX. 
hundredths 
wave- 
327 
o 
. 
of an inch. 
Q 
O / // 
length. 
.312 
55 
0 
24 
27-88 
+ 30 
17 
313 
25 
17 
330 
313 
5 
0 
24 
18-19 
+ 19 
46 
313 
24 
46 
331 
313 
5 
0 
24 
18-81 
+ 20 
26 
313 
25 
26 
313 
25 
10 
328 
25 
0 
0 
24 
23-96 
-26 
2 
24 
33 
58 
329 
24 
45 
0 
24 
10-30 
-11 
11 
24 
33 
49 
24 
33 
53 
35 34 21 
21357 
327 
312 
55 
0 
24 
13-87 
+ 15 
4 
313 
10 
4 
330 
313 
5 
0 
24 
4-17 
+ 4 
32 
313 
9 
32 
331 
313 
5 
0 
24 
4-73 
+ 5 
8 
313 
10 
8 
313 
9 
55 
328 
25 
0 
0 
24 
10-15 
-11 
2 
24 
48 
58 
329 
24 
45 
0 
24 
3-53 
+ 3 
50 
24 
48 
50 
24 
48 
54 
35 49 30 
21489 
