THE SOLAR SPECTRUM AT THE DATE 1877-78. 319 
Appear- PLACE Differences. 
Intensit ance by | yrierometer DATA, _|Chemical-oviein-|| Concluded || ——— 
Object Observed, generally a black, fixed of black, a graphics) Recnies AG pO F, See ae n | Sao S a 3 
Fraunhofer Line. thickness fee Grine or-| Angstrom, PL AGE. per ae 8 
of line. symbol, Rev. mal Solar Thalen, &e. British Inch. g 5 2 
Spectrum. gA A 
A group to be called ‘‘ the first of the 
hazy ones ””— | 
1st component, 0°5 ' 21°073 54 412 6 
2nd do. 15 I 21°100 | 54 418 3 
Srd and principal, 5) | 21134 |54 420) Titanium. | 54 421 10 
cous 4th, a close double, ‘ 15 { 21°160 54 430 Titanium. 54 431 3 
om : 5th component, 1 1 at 21°172 54 434 4 
6th do. 1 | 21°185 54 438 4 
7th do. 1 I 21°205 54 442 9 
8th do. 0°8 | 21°216 54 444 12 
9th do. 07 | 21°266 54 456 11 
ih. 10m. P.M. 
Friday, 28th June 1878. Prisms 8 and 6. Dispersion = 21°. 
The principal line of last / 
group, for reference place me | 
only, sre : te Ge ee 8365/54 420, Titanium |54 423 
A notable double line : 1st component, 25 8°545 § || 54 467 6 
: 2nd = do. 2°5 8567 (| 54 473 17 
Clear line, ; F : ies) 8624 54 490 7 
Z Do. i 8°656 54 497 10 
Fine line, 1 8691 ’ 54 507 9 
Do. 1 | 8'728 54 516 14 
Do. 1 } 8780 54 530 
Sharp double line, but with haze be- 16 
hind— 
1st component, 2 8'840 ; 54 546 10 
2nd do. 2 8882 | 54 556 
Tron and 21 
Strong and sharp line, 4 | 8:955 | 54 576) Chromium. || 54 577 31 
Sharp double line: Ist component, 2 | il 9-066 2 54 608 || 44 
2nd do. 2 | 9104 Copper. 54 619 31 
A group: 1st component, . 3 | ( 9-224 (|| 54 650 9 
Qnd_ = do. : 1 | 9°255 | 54 659 8 
. 8rd_—s do. 3 | Ih 9284 Chromium. { || 54 667 9 
4th do. 1 | 9°320 | 54 676 8 
5th do. 3 | 9°353 Ui) 54 684 8 
Faint haze, : il Ee: 9°385 54 692 10 
Faint hazy line, a3 1 IE: 9°423 54 702 8 
Do. do, i aE 9°453 54 710 8 
Strong line, 3 | 9°480 Tron. 54 718 29 
Faint hazy line, 05 oF 9°594 54 747 ll 
Do. do. 05 UE: 9°635 54 758 4 
Do. do. 0°5 rE 9°655 54 762 6 
Do. do. : A 3 3 0°5 AA 9°676 54 768 1B 
Strong double line : 1st component, . 2 | iI 9°730 a 54 781 8 
Qnd do. 2 | 9°757 54 789 iG 
Strong line, 2 | 9°831 54 808 Wl 
Fine line, 1 1 9°874 54 819 mI 
Strong line, 2 | 9-916 54 830 13 - 
Stronger line, 3 9°967 54 842 Tron. 54 843 
31 
Strong double line : 1st component, . 2 | 10:095 oy 54 874 
3 Sade tent tlegs | I] 10-130 eee Panola ee 
Very fine line, . : : bid in Bx 0°5 1 10°226 54 904 14 | 
Strong double line: 1st component, . 2 | II 10°285 ton 54 918 14 
2nd do. 2 | 10°340 i 54 932 20 
Quadruple group of fine lines— 
1st component, Oil (| 107430 54 952 7 
2nd do. ‘i 0°6 i : 10°455 54 959 4 
8rd_— do. 06 || Np 10°47 54963 || 5 
4th do. 0°6 | J 10°495 54 968 12 
