olour of the 
Jontinuous 
rum at 
fe Place. 
THE SOLAR SPECTRUM AT THE DATE 1877-1878. 
Object Observed, generally a black, fixed 
Fraunhofer Line. 
Strong line, . 
Very fine line, . 
Fine line, " 
Hazy line, 
Sharp line, 
Fine line, 
Strong line, 
Fine line, 
Strong line, 
Fine line, 
Double line: 1st component, 
2nd = do. 
Strong line, hazy, 
Great change of focus in the spectrum foraateuias 
Last line repeated, with new focus, 
Fine line, i 5 
Do. 
Do. 
Do. 
Strong line, 
Finer line, 
Strong line, 
Fine line, 
Stronger line, 
Fine line, 
Do. 
Do. : 
Strong line, 
Ultra faint band, begins faintly, 
ends sharply, 
eid faint double line— 
1st component, 
2nd do. 
Fine line, : 
Strong aud AS double line— 
1st component, 
2nd = do. 
Fine line, 
Strong and sharp line 
Sharp line, 
Do. : a 
Close double line : 1st component, 
2nd = do. 
GREEN colour ends here, and GLAUCOUS colour begi 
Strong line, . 
Fine line, 
Very strong line (not so strong in 
Angstrom), 
Unequal double line : Ist component, 
Zoe, 
Strong line, c : 
Fine line, 
Unequal double line: Ist component, 
2nd do. 
Intensity 
of black, or} ° 
thickness 
of line. 
br or bo 
HOWHMH HE 
ay : 
BREE DpH ww Hoo 
UN ~ 
Lael So) 
mM be bb eH 0 
th, 15m. p.M., Stove-pipe cuts off Sun. 
10h. 30m. A.m., 3 June 26, 1878. 
Bad definition. 
definition. 
definition good. 
Appear- 
ance by 
graphical 
a 
yy 
ti 
ytd 
Removed the blue. glass, and again adjusted prisms for space between E and F. At 11h. a.m., 
311 
PLACE- | Differences. 
Sfiesarier, | SUAS [Chemtestorlei| Onduted (rani 
SN Angstrom’s Angstrom, NUMBER- || 4 oS S 
Re Grating Nor-| Thalen, &c. PLACE, per || 3 3 EI 
Be mal Solar British Inch. || 52] 
Spectrum. gA| A 
8°724 Tron. 49 476 12 
8°780 49 488 10 
8°823 Tron. 49 498 20 
8920 Titanium. 49 518 16 
8-998 Tron. 49 534 13 
9:059 49 547 10 
9103 i eeeONs 49 557 2 
9°117 Tron. 49 559 ll 
9°167 Tron. 49 570 6 
9°195 49 576 14 
9°264 Tron. 49 590 13 
9-322 Titanium. 49 603 50 
9°557 49 650 Nickel. 49 653 53 
9-793 Tron. 49 706 10 
9°832 2 49 716 17 
9:920 49 734 Tron. 49 733 
this telescope focusses now close to one end of its tube range. 
10°067 49 734 Tron. 49 734 99 
10°164 Copper. 49 756 12 
10°233 49 768 14 
10°300 49 782 21 
10°406 49 803 
9 
10°450 49 813 Nickel. 49 812 6 
10°480 49 818 5 
10°517 49 §20 Iron. 49 823 12 
10°572 49 835 5 
10°600 Tron. 49 840 
23 
HOE Alris 49 863 20 
10°810 49 883 6 
10°834 49 889 9 
10°898 49 898 Tron. 49 898 14 
10°964 49 912 9 
11:008 49 921 
10 
11°054 49 931 9 
11°068 49 933 3 
11°140 ~ 49 936 
27 
11°215 2 49 963 9 
11255 Tron. 49 972 
9 
11'303 49 981 13 
11°373 49 994 6 
11-404 Nickel 50 000 8 
11°445 50 004 and 50 008 5 
11°472 Tron [ 50 013 3 
11°486 50 016 | 
ins. 26 
11°620 Iron ? 50 042 li 
11°668 50 053 
6 
11°704 Iron. 50 059 18 
11-800 tion 50 077 6 
11°832 5 50 083 29 
11°983 Tron. 50 112 17 
12068 Tron. 50 129 So 
12188 50 152 Tron and 50 151 1 os 
12°190 Titanium. 50 152 
Set and re-set the prisms several times for this part of the spectrum, but without improving the 
found 
