ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 125 
STANDARD LINES—continued. 
— i 
eon ae Perot and Fabry | Kayser 
Tron Are Solar Spectrum Tron Are 
Previous Measurements 
(Solar Spectrum) 
Rowland 
2690-153 | 
89-302 
80°544 
2679-065 79°148 2679-148 (in arc) 
73°315 
69-581 
66°897 
56-232 
51-800 
47-649 
44-085 
35°899 
31°139 31-125 (in arc) 
28-296 28-383 
25-754 
23°627 
20-499 
18:108 
17°706 
| 13°914 
| 11-963 11-965 (in are) 
| 07°155 
| 
06-920 
2599-663 
99-483 2599-494 (in arc) 
98-456 98-460 ,, 
| 2588-016 88-102 
85-964 
| 84-623 84-629 (in arc) 
| 82-408 
| 78-012 
| 75°845 
| 
| 
| 
| 
74-462 
67-001 
62°541 62619 
' 56:963 
51-192 
49-708 49-704 (in arc) 
46-072 46-068 _,, 
44-016 
42-192 
| 41-064 41-058 (in arc) 
37°263 
35°699 35-648 
33-911 
29-928 
29-223 
28516 Si 28-599 Si 
27°525 27-530 ,, 
24-393 
23°754 
22-950 22-948 (in arc) 
18-198 18-188 
17-754 
11:857 
10-927 10-934 (in arc) 
{07-991 
06-904 Si 06-944 Si 
3° 
