298 Serentific Intelligence. 
Willigen, are given in the table below, which is taken from his 
paper. omparison of the results of the measarements of these 
different observer, provided apparently with equally good instru- 
ments, will serve to show that the subject is by no means ex- 
haust ed, and that new series of determinations are required. 
Kirchhoff, D. Angstrom. v. d. Willigen. Kirchhoff. D. Angstrom. _v, d, Willigen. 
593 687-41 686-67 687°132 1737°6 511712 510-70 Pee 
C 694 656°23 656-18 656°557 1750-4 510°00 509.88 510199 
TLL5 651-71 651-55 651°961 17774 50811 50788 508'268 
7 6 ates 
55a 1834 504°26 504713 504390 
831 623-24 623-14 aie 18545 502-96 502-70 
850 619°26 619°05 619°423 1867 501-97 501-75 oak 
860 61714 616°82 617-201 1873°5 501°38 501°32 oa 
616°37 616:12 616-510 18-5°38 500-78 500-50 ae 
8745 614°38 614-05 614-451 1908°5 499°43 499-02 oven 
877 613°88 613°55 GIS 718 a 98°48 498-20 
597-79 597-70 ar 1983 49405 49385  .... 
585°92 585- Dae 
57639 576-20 suis 2041'4 489°25 489°05 489°378 
7544 575-20 a 2058  487°89 487-75 Ladd 
7117 570-83 — 2067  487°26 487710 ee 
568-37 568-14 _... || F 20801 48622 48608 486400 
566.00 565 sued 2103'3 48434 483-90 pe 
563°93 562-23 —§62°336 2121°5 48253 482-24 ja 
56165 561-45 561-809 21 0.28 480.00 ph 
557-45 557 21871 47653 47650 ee 
554°21 552-75 553-214 2201°9 475°62 475°35 ase 
550°80 55 ft 3 2291-7 474:07 473°60 nas 
550-37 way 2233-7 473°08 472-66 pai 
547°81 547-60 548-186 2250 471°53 471:35 +ns 
46°46 546-23 546-551 2264°3 470-43 470-20 ins 
545°73 645°-46 545°813 2309 46680 46665 467 
54476 54458 2416  460°36 459°20 o--+ 
10 542 eee 2436°5 45840 458710 = 
540°60 540-48 ce 24575 456°53 455°50 --- 
539°71 538 24674 455°45 454°90 a 
53720 537-05 537.409 2489-4 453-49 45330 453 
53420 534 253771 450°29 450-05 --- 
532°98 532-75 533-070 2547°2 449°86 449-40 o=-* 
529°91 §29 se 25663 448°20 448-20 -os+ 
523-39 528-96 SRS 2606 445-74 445°40 ---- 
527.71 527-50 sane 2627 444°39 444°20 ---- 
52713 526-90 527-203 2638-6 443°59 443-45 sais 
5°68 525-4 as 2670 441°63 441-48 pin 
523-43 52323 523.590 26866 440°62 440°40 195668 
522.79 522-64 522-968 2721-6 43850 43840 # 
2169 521-50 Ss 27349 43755 437°51 a--* 
521 520-75 oo 2775°6 435°42 435°18 Ta 
519°37 5191 2797 43408 434-00 pee 
51843 51831 5186 2822-8 432°56 432°50 abe 
17°40 617-22 4517522 || @ 2854-7 431:12 430°70 30-190 
51685 51668 516-985 2869-7 430:13 430:00 
51434 513-85 a 428°96 428-90 dai 
