ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 
IRIDIUM —continued, 
Wave-length 
Kayser 
4452-987 
50°346 
49-540 
26-459 
25°936 
227121 
11°344 
06-926 
03°952 
4399-645 
92-758 
80°930 
77-175 
76°575 
62-289 
52°720 
51:462 
32-490 
30-060 
1907. 
Are Spectrum Spark Spectrum Medudtion to 
aaa) sot kan os Sey | Vacuum 
_ | Wave-length ; 
<—s Tntensrty| ee See cuteness = : 
and an 
Bos oe Character Haney ate Character) A+ 3 = 
4467-4 Ib | 1:22 | 6-2 
66'8 1 a3 2 
60:0 1 by) ” 
58-2 1 fe 99 
iI 52°9 1 on FP 
52°7 In a Be 
51:4 1 + Pe 
50-9 1 > 9 
4450°41 In = me 
2 50°2 1 5 “ 
0 99 9? 
44-0 In ”? 9 
43:1 1 es 35 
26°45 5 26°5 4 1:21 | 63 
0 29 ” 
1 22:0 1 55 Be 
21-3" In = a 
2 11:2 1 - nt 
10°5 il * s 
0 06:9 1 - 3 
03°98 3 04:0 2; s a 
01-4 1 ze s 
4399°68 4 399-7 6 F AS 
92°80 2 92°8 1 1:20 Fy 
90:4 In 3 re 
88°5 1 oS Pp 
88:1 1 - Ps 
81-2 In * fr 
80°4 1 FF A 
80:0 1 rf Fr 
3 17:2 1 Ae aa 
0 76°6 1 - Fr 
74:9 1 * = 
73°8 In 2 se 
73:0 In 5 = 
72°3 1 Ae i 
72:0 In a i 
69:2 In E aS 
1 As 6-4 
61°3 1 * 3 
60°9 1 : 33 
60°2 i! ae 35 
59-6 il 7 a 
58-4.’ In 5 5 
55°8 In 1:19 > 
54°3 In 3 eS 
53°5 1 43 Fr 
2 52°7 1 - 3 
1 ”? ” 
48:1 In = AA 
43°7 1b soit eee 
42°2 In PF A 
39°6 lb a ma 
0 »” ”? 
0 30:0 1 = a 
129 
| Oscillation 
| Frequency 
in Vacuo 
