a i il ie ee re 
ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 185 
p. 53 (1897 
). 
OsMIUM. 
Kayser, ‘ Abhandl. kénigl. Akad. Wissensch. Berlin,’ 1897. 
Exner and Haschek, ‘ Sitz. kais. Akad. Wissensch. Wien,’ cv. p. 727 (1896), evi. 
Rowland and Tatnall, ‘ Astroph. J.’ ii. 186 (1895). 
Exner and Haschek, ‘ Wellenlingen-Tabellen der Bogenspektren der Elemente,’ 
Leipzig und Wien, 1904. 
Adeney, Photographs of Ultra-violet Spark Spectra, ‘Trans. Roy. Dublin Soc,’ 
(2), vii p. 331. 
Are Spectrum 
Wave-length 
Kayser 
5728-735 
5523°786 
02-789 
5149-895 
03°670 
5031-988 
4937°522 
12-771 
4899-386 
65-759 
16°105 
4794:177 
63-263 
55:332 
44-050 
38:508 
38-215 
4692-220 
63-977 
42-010 
34-930 
32-000 
16:948 
4597-321 
95:206 
51°461 
50°584 
48-836 
40:093 
29-848 
25-035 
Rowland 
and 
Tatnall 
4616:944 
4551-463 
50°571 
48-827 
40-087 
29°842 
25:035 | 
and 
Haschek 
4692:20 
63°99 
34°94 
32°01 
16°94 
4597°35 
95-22 
51:50 
50°59 
48°85 
40:10 
29°88 
25:03 
racter 
PNNrFOUNNOFOCrFNNWNh 
bo 
me bw Re © 0 
wop, 
Spark Spectrum 
_| Wave- ears 
length | sity 
S|) pha 
- Exner and, Cha- 
Haschek | racter 
55 
5 
or 
lor) 
co 
Be a ae ee Fa a ne Ne et et a a ee 
| Reduction to 
Vacuum 
| 
Oscillation 
| Frequency 
in Vacuo 
17451:2 
180986 
67:6 
19412-7 
19588°3 
19867°5 
20248-1 
20349°5 
20405°1 
205462 
20758°0 
20852°9 
20983°8 
21023°2 
