EXTRA OBSERVATIONS OF MAGNETOMETERS, APRIL 5—6. 1843. 59 
DECLINATION. BIFILAR. BALANCE. 3 DECLINATION. BIFILaR. BALANCE. 
i Min. Reading Min.| Reading | Min.| Reading eer Min. Reading Min.| Reading | Min. Reading 
\ Of adiaed: of Cor- || of Cor- of Reduende ot Cor- of Cor- 
iH Obs. Obs.| rected. || Obs.| rected. Obs. Obs.| rected. || Obs.| rected. 
{ = 
ile a en ce m: |. Se.Diy. || m. || Mic. Div. ERE mn ered. | Renee bee m. | Sc.Div. || m. | Mic. Div. 
| Apr. 5 14 54 | 494-2 || Apr. 6 2] 10 | 25 39-72] 12] 541-0 | 13 | 755-3 
| 55 | 25 15-36] 55 | 500-5 15 40-03 || 17 | 539-6 || 18] 772-1 
i 56 501-5 > 20 38-35 || 22 539-1 23 778-0 
| 57 501-9 || 57 486-7 30 39-29 || 32 543-5 33 793-4 
} : 58 503-4 58 488-3 35 40-70 || 37 551-7 || 38 804-9 
| Apr. 5 15 0 20-43] O 499-4 40 41-14 || 42 549-5 || 43 823-5 
{ 2 499-9 2 505-2 45 38-53 | 47 556-9 || 48 825-9 
| 3 509-1 50 39-90 || 52 556-5 53 825-1 
5 18-48 || 7 497-6 8 528-4 55 42-19 || 57 553-0 58 825-4 
| 10 16-97 || 12 506-3 13 539-38 | Apr. 6 3 0 43-10); 2 545-7 3 827-4 
] 14 508-7 5 41-24) 7 545-4 8 836-7 
15 16-57 || 17 509-2 18 544-5 10 39-96 || 12 549-6 13 835-9 
| 20 17-34| 22 511-0 || 23 554-4 15 37-89 || 17 555-6 18 834-3 
| 25 17-41 | 27 514-2 || 28 564-6 20 38-95 || 22 554-3 || 23 829-7 
| 30 16-73} 32 518-2 33 570-6 25 40-17 || 27 553-5 || 28 824.7 
| 35 16:97 || 37 520-7 || 38 578-2 30 41-24)| 32 551-1 33 820-2 
40 17-25 || 42 521-0 || 43 585-2 35 39-83 || 37 548-1 38 821-1 
45 17-61) 47 516-8 || 48 590-5 40 40-03 || 42 545-7 || 43 820-3 
50 16-24 || 52 516-8 53 591-9 45 40-20 || 47 543-0 || 48 819-9 
55 15:19] 57 517-0 || 58 591-2 50 40-48 || 52 538-0 || 53 817-5 
ipr. 5 16 0 16-03), 2 513:8 3 594-0 55 39-84 || 57 546-5 58 810-4 
5 14:92) 7 514-0 8 593-9 | Apr. 6 4 0 40-91 2 555-1 3 804-9 
10 14-48 || 12 515°3 13 593-6 5 41-47|| 7 562-0 8 802-0 
15 15:39 | 17 514-4 18 589-2 10 41-69) 12 554-8 13 807-2 
20 14-97 || 22 509-9 || 23 586-9 15 40.24] 17 548-0 18 808-5 
25 14-85 || 27 508-4 || 28 579-3 20 39-43 || 22 558-4 || 23 806-7 
30 14-08] 32 510-8 || 33 574-5 25 38-69 
35 13-91 || 37 511-5 38 574-2 | Apr. 6 5 0 39-39}) 2 543:8 3 804-8 
40 14-18] 42 510-0 || 43 570-9 | Apr. 6 6 0 32-69 || 2 543-4 3 803-3 
45 14-51 || 47 510-3 || 48 567-5 10 31-38 || 12 538-6 13 802-7 
50 14-82 || 52 509-4 || 53 564-0 | Apr. 6 8 0 26-35 || 2 540-3 3 726-9 
55 14-89 || 57 508-2 || 58 564-6 | Apr. 6 10 5 8-60|| 7 521-8 8 735-4 
pr. 517 0 15-09} 2 505-0 3 564-0 10 6-05 || 12 §22-1 13 740-3 
5 14.92 7 504-3 8 562-9 15 8-21 || 17 507-3 18 753-1 
10 14-11] 12 506-9 13 562-9 20 4-52 || 22 517-0 || 23 748-1 
15 14.20] 17 | 508-9 || 18] 562-3 25 6-42 || 27 | 521-9 || 28] 746-9 
20 14.06] 22 510-7 || 23 566-5 30 6-05 || 32 | 528-3 | 33 744-4 
40 13-95 || 42 513-8 || 43 561-6 35 8-41 || 37 530-6 || 38 741-1 
r 5 18 0 14.23] 2 515-4 3 566-9 40 12-33 || 42 531-0 || 43 744.9 
pr. 5 19 | 55 24.00 || 57 517-9 || 58 565-0 45 14-92 || 47 531-1 48 741-3 
pr. 5 20 0 23-63 || 2 519-2 3 563-5 50 14-62 || 52 536-5 53 724-9 
pr. 5 21 | 50 30-25 || 52 505-0 || 53 628-4 55 15-32 || 57 515-0 || 58 706-5 
3 55 29-14] 57 503-7 || 58 632-0 | Apr. 6 I1 0 15-09 |) 2 540-7 3 699-3 
br. 5 22 0 28-64|| 2 504-6 3 633-5 5 16-43 || 7 534-5 8 690-7 
} 2 508-4 8 638-1 10 16-94] 12 534-9 13 671-6 
10 29-71] 12 508-6 13 643-9 15 17-62 || 17 534-3 18 673-6 
| 15 31-09 20 18-66 || 22 531-2 23 666-0 
; 30 35-06 || 32 505-5 || 33 653-3 25 18-84 || 27 528-7 || 28 655-9 
pr. 5 23 5 36:88 || 7 517-9 8 665-9 30 18-43 || 32 525-9 || 33 648-4 
, 35 17-05 || 37 523-6 || 38 641-9 
pr. 6 O 0 | 25 34-82] 2 521-1 3 701-8 40 15-90 || 42 520-2 || 43 635-8 
6 1 0 39-44 || 2 532-8 3 695-6 45 15-02 || 47 518-7 || 58 626-9 
30 38-87 || 32 529-7 || 33 723-0 50 14-36 || 52 517-0 53 615-4 
6 2 0 41-98], 2 533-5 3 746-1 55 14-11 || 57 508-7 58 606-3 
5 38:96] 7 536-2 8 754-4 | Apr. 6 12 0 14-28|) 2 504-5 3 607-0 
Birizar. k=0-0001248. BALANCE. k=0-000015 approximately. 
BIFILAR THERMOMETER, c 46°6 467-0 457 | 45°°7 | 49°83 | 49°-2 
BaLance THERMOMETER, } psc { 4g4 5 5° 16%, { 47°93 62 17%, { 477.53 69 18, {a7 a Pe { 49.95 6% 12, { 49°-6 
April 54. See notes on the Aurora, p. 61. 
