of the lines of the Solar Spectrum. 189 
DMNMWNNHNWNWWNNWNHNNNMWNMNNNKH NY MN YH DD Wb DWH DD | wb dD DP 
Wt wW.L. Wt. . Wel Wits Weel 
4 5210:492 3 5544-073 2 5919-795 
Pie 215207 3 5555-035 3 5930-339 
2 5217-488 2 5569-772 2 5934-809 
2) 5225-617 yea 56,222 2 5946-130 
2 5229-950 Oe 5582120 4 5948-685 
2. 5233-047 2 5588'910 2 5951-710 
2 5241-599 2d 5603-019 2 5955106 
S 5250-334 2 5615-451 2 5956-853 
S 5250-759 2 5615-809 2  5975°508 
2 5253-558 S  5624:181 3  5976°934 
2 5261-815 S 5624-696 2 5984-977 
S 5269-649% 2 5641595 3 5987-214 
Sd 5270-429* 2° 5645.751 S 6003173 
ad 5273'3'9 2 6655-645 2 6008-700 
5276138 3 5658-019 S 6013-682 
5281-908 2 5662679 4 6016-776 
5283-747 2 5675:593 2d 6020278 
5288-640 2  5679:184 2 6021-948 
8296-798 4 5682-894 4 6024-207 
5300°843 2 8688-370 4 6042241 
5307 478 2 5701-708 3 60567153 
d. 5316°803+ 2 5709°565 6  6065°635 
5324-311 2 5709-700 6  6078°635 
5333-038 3 5715-244 4 60797146 
5353-530 4 5731-909 3 6108864 
5361°752 2 5741-994 1 6103°346 
5362 970 3 552-188 ON) 6082262 
5367 600 3 5753-278 Qh Glin 206 
5370 093 2  5754:819 2 6116345 
5371°622 3 576371538 Bu G1 22-35 
5379-704 2 5772-299 28) G86: 160 
5383-497 3 5715-235 3 6141-882 
5389-611 2 5782 285 4  6162°319 
5393-298 2 5784:015 2 6169°699 
5397-268 S 5788-075 Ds OUTS alr 
5405-914 S 5791-137 2 6176:943 
5415341 2 5798-330 2 6180-337 
5424-203 2 5809 357 3 6191°324. 
5434-656 2 58167504 4 6191-695 
5447-046 3 5853-838 5 62007455 
d 5455°682 4 5 857°606 3 6213°569 
5462666 6 5859-741 4 6219 420 
5463-090 4 5862-511 4  — 6230°876 
5463408 2 5883:971 2 6237-452 
5466521 3 5889-804 3 6246-460 
5477-040 S 58907125 D.* 3 6252-706 
5497:°660 3 5893-026 2 6256°500 
5501-609 S 5896-080 D, 3 6261-234 
5506'920 2 5898-327 5 6265-271 
5513-122 2 5901-630 6 6270:370 
5528°560 3 5905-820 5 6278-225 
5534-990 Sd 5914319 4  6281°315 
5543339 3 5916-409 1 6289°542 
* Fraunhofer’s E. + Kirchhoff’s 1474. 
{ Peirce’s standard, given by him 5624°825 (Amer. Jour. of Science) later cor- 
rected by him to 5624-86 and finally corrected by Rowland & Bell for error of 
ruling of grating and of standard to 5624°66. The latter can be considered as 
very near to what the final corrected value of Peirce will be, though it may be 
even so high as 5624°16, ; 
