— 
| 
ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 119 
STANDARD LINES—continued. 
Buisson and 
Fabry 
Tron Are 
Perot and Fabry 
Solar Spectrum 
Kayser 
Tron Are 
Previous Measurements 
(Solar Spectrum) 
Rowland 
4076°641 
21°872 
3977°745 
35-818 
06-481 
3865°526 
43-261 
4084-166 
79-999 
71-901 
68-138 
63°755 
62-605 
55-706 
45-978 
44-776 
32°796 
30°670 
22-029 
17°303 
07-429 
3998-211 
96-148 
86-330 
84°112 
77892 
69-411 
66-219 
56823 
56-610 
48-927 
45-269 
41-032 
35-966 
28-073 
23-059 
20-404 
18-467 
16-880 
13-784 
09-980 
06-624 
03-097 
3899°853 
95-801 
93-538 
87:193 
86-426 
78°722 
78°166 
72-640 
65°670 
60-054 
56°515 
50-114 
41:194 
40-586 
34:370 
33-463 
27:967 
26-028 
24:591 
20°573 
4071-903 
63°755 
62-602 (in sun) 
55-701 .; ) 
45-975 
3977-891 (in sun) 
41-034 
28-060 
16-886 
3886-421 
60-050 
56°517 (in sun) 
40-589 
27:973 
26-024 
20:566 
