THE SOLAR SPECTRUM AT THE DATE 1877-1878. 317 
nae DATA, Ich 1 Concluded fs aca 
‘ bd o : jeal-origin- ee ee 
Object Observed, generally a black, fixed aettenalty erence Micrometer from daca fone WAVE. ar si 
Fraunhofer Line. Fagiteibeaeee compara 8 Angstrom’s Angstrom, NUMBER- || 43 3 
; omits tive Rew Grating Nor-| Thalen, &c. PLACE, per |] 33 2 
* | symbol ; mal Solar British Inch,|| 5 © a 
Spectrum. ae) 8 
Group of sharp lines: 1st component, 1 | 15146 53 036 3 
Qnd do. 1 etal 15°160 53 039 || 7 
3rd & strongest, 2 | 15°185 Tron 53 046 
12 
Fine line, 1 ' 15235 53 058 12 
Hazy band : beginning, 1 J 15°287 Nickel. 53 070 6 
end, 0°3 i 15°305 Nickel. 53 076 
33 
Very strong and eae line, | 4 | 15°446 | 53 109| Manganese. || 53 109 ei 
Fine line, iL 1 15°604 Cobalt. 53 147 7 
Do. 1 \ 15°636 53 154 
| 34 
Hazy band : beginning, : 1 F 15°73 53 188 || rfl 
end, 0:3 te 15°797 | 53 199 || : 
2 
Strong sharp line, 3 | 15938 Iron. | 53 226 12 
Line hazy to right, 2 EE 15990 | 58 2388 18 
Fine line, c 1 \ 16:070 | 53 256 16 
Stronger line, 166) | 16140 Tron. 53 272 21 
Fine line, 1 16°223 53 293 7 
Double line : 1st component, 1 | i 16°256 53 300 6 
2nd. do. il | 16°280 53 306 17 
Clear line, — 3 1b 16°357 53 323 
19 
Strong line, 3 1: 16°424 53 342 | Manganese. 53 342 12 
Fine line, c 1 \ 16°472 Manganese. 53 354 4 
Very fine line, . 0°5 : 16°490 53 358 19 
Fine line, 13 ' 16°573 Titanium. 53 377 13 
Very fine line, 05 , 16628 Titanium. 53 390 7 
Fine line, 1 | 16°660 53 397 
10 
Group of lines ; 1st component, 1:3 | 16°702 Nickel. 53 407 5 
2nd = do. 1 alll 16°728 Nickel. 53 412 3 
. 3rd do. 1 | 16°737 583 415 I 
Very fine line, . ¢ 2 05 ' 16-786 53 426 ; 
7 
Notable and strong line, 4 | 16'820 | 53 433) Manganese. |53 433 * 
Faint double line : 1st component, il r 16°898 53 452 4 
ond) © ‘do; il rfl 16:915 53 456 
8 
Fine line, 1 | 16°952 53 464 15 
Faint hazy and perhaps double line, . : il fs 17017 53 479 19 
Very fine line (strong in Angstrom), . 0-7 ' 17:096 2 53 498 
26 
Clear line, 155 | 17°205 Tron. 53 524 V7 
Fine line, 1°3 ; 17-275 53 541 ic 
Finer line, 0'8 : 17353 Titanium. 53 559 
14 
Triple group : 1st component, 2 | 17-415 Tron. 53 573 7 
gnd do. 1 rely | 177443 ’ 53 580 7 
3rd do. 2 | 17-475 2° 53 587 
15 
Fine line, é : 5 a \ 17538 53 602 18 
Triple group: 1st component, 1 | 17617 || 53 620 8 
2nd and chief, 3 Leil 17650 Iron. 53 628 || 49 
3rd component, . 1 ' 17690 53 638 3 
2 
Clear line, 11955 | 17°810 Titanium. 53 666 ll 
Fine line, 0°8 | 17°858 53 677 11 
Do. 1: in 17 ‘906 Iron. 53 688 : 
Do. ile \ 17945 53 697 8 
Do. ile F 17980 Manganese. 53 705 : 
; 1 
Clear line, 15 | 18:050 2 53 722 v5 
Strong line, 2 | 18104 Tron. 53 735 | 13 
Fine line, ; i \ 18163 53 748 23 
Very fine line, . 07 , 18-258 53 771 rT 
Do. 0°4 ; 18°304 53 782 12 
4M 
