539. 
540-9 
é 41-8 
| 539-4 
5 41-3 
539-6 
542-0 
538-3 
Extra OBSERVATIONS OF MAGNETOMETERS, JANUARY 26—29, 1845. 
BALANCE oe ’ BIFILAR BALANCE Gotie amyea st Birizak || BaLance 
Corrected. Mean DECLINATION. Corrected. | Corrected. Mean DECLINATION. || Qoprected. || Corrected. 
Time. | Time. 
Min. | Mic. Div. d. h. Min, Z 4 Min. | Se. Diy. Min, | Mic. Div. dad. h. Min. 2 ~ | Min. | Se. Div. || Min. | Mic. Div, 
43 | 553-0] 27 11 || 35 | 25 10-63|| 37 | 538-4] 38 | 560-6] 28 11 | 40 | 25 12-69) 42 | 510-4) 43 | 529-0 
48 | 553-9 40 10-43 || 42 | 538-4] 43 | 561-0 45 | 25 03-70|| 47 | 522-2]| 48 | 539-5 
53 | 555-9] 27 12 || 0 10-97|| 2 | 538-8] 3 | 563-6 | 50 | 24 55-84] 52 | 539.7] 53 | 545-5] 
58 | 557-5 10 10-67 || 12 | 535-9] 13 | 566-4 | 55 | 24 55-80 57 | 545-9) 58 | 545-4 
3 | 558-4 45 12-22|| 47 | 534.5 || 48 | 570-0] 28 12 || 0 | 24 59-66| 2 | 548-8) 3 | 542-8 
8 | 559-7] 27 13 || 0 12-11|| 2 | 534-6] 3 | 572-0 | 5 | 25 04-41] 7 | 543-5] 8 | 542-3 
SS om | 10 | 08-34) 12 | 540-4 
18 | 562-7] 28 4 | 0O| 25 19-34|| 2] 540-1] 3 | 603-0 | 15 | 11-62) 17 | 528-3) 18 | 544-6 
23 | 563-2 15 17-06 || 17 | 543-1| 18 | 614-4 | 20 | 10-43 || 22 | 523-6 | 
50 17-80 || 52 | 525-2)| 53 | 618-0 30 | 10-40 |) 32 | 525-0] 33 | 547-4 
33 | 566-1] 28 5 || O 15-38] 2 | 524.9] 3 | 623-1 | 40 12-04 || 42 | 521-3) 43 | 549.3 
25 09-56 || 27 | 520-7| 28 | 638-2] 28 13 | 0 13-25 || 2 | 528-3] 3 | 550-9 
48 | 567-8 35 07-07 || 37 | 526-9 |) 38 | 640-7 | 30 | 16-82 | 32 | 531-1] 33 | 549.4 
40 08-01 || 42 | 529-1| 43 | 639-9] 28 14) 0 21-56] 2 | 533-7]) 3 | 541-0 
58 | 568-4 45 08-73 || 47 | 533-4] 48 | 639-3 | 10 24-25) 12 | 522-9) 13 | 537-4 
3 | 569-0 50 12-75 || 52 | 527-3|, 53 | 640-6 20 | 23-12 || 22 | 520-8 || 23 | 534-7 
13 | 574-5 55 12-95 |) 57 | 527-6] 58 | 640-8 | 40 | 16-92 | 42 | 526-9) 43 | 531-6 
18 | 576-4] 28 6] 0 13-05 || 2 | 528-1] 3 | 638-6] 25 15 | Oo 12-92|| 2 | 529-8|| 3 | 537-7 
28 | 578-2 10 14-73 || 12 | 525-6), 13 | 640-3 | 15 | 13-29 || 17 | 532-3] 18 | 547-2 
20 14-30 || 22 | 531-3), 23 | 635-0] 28 16 | O 14:15 2 | 533-8] 3 | 560-0 
35 15-12|| 37 | 530-1| 38 | 630-2] 28 19 | 0 23-45 || 2 | 534-8] 3 | 558-6 
DBnn 7; 0 16-26 |) 2 | 528-0] 3 | 633-4 i Si} 23-54) 7 | 536-1} 8 | 556-1 
55 | 580-6 20 13-72 || 21 | 530-5), 22 | 636-1 10 23-49 | 12 | 536-4 || 13 | 552-6 
3 | 583-8] - *| 35 10-41 || 37 | 536-8] 38 | 636-1 15 | 24-35 | 17 | 537-1] 18 | 549-0 
23 | 583-4 40 11-30) 42 | 537-3) 43 | 636-4 | 20 | 24-08 | | 
3 | 580-0] 28 8 |) O 09-10|| 2 | 540-4) 3 | 641-4 | 30 24-32 || 32 | 541-3 || 33 | 541-2 
18 | 581-0 12 09-87 || 13 | 534-6] 14 | 643-2 | 35 24-32 | 37 | 540-8] 38 | 539-3 
28 | 582-2 28 06-32 || 29 | 539-4 | 40 24-08 || 42 | 539-3 || 43 | 537-7 
33 | 582-3 *| 30 12-04 || 32 | 530-9|\ 33 | 645-0 | 50 24-22 |) 52 | 541-9) 53 | 535-1 
35 01-51|| 37 | 546-1|| 38 | 622-2] 28 20 || 0 25-11] 2 | 539-6] 3 | 534-5 
43 | 580-8 40 09-73 || 42 | 536.4|| 43 | 621-7 | 15 26-18 | 17 | 535-7 |) 18 | 528-1 
48 | 581-2 45 12-45 || 47 | 527-1] 48 | 633-6 | 20 25-76 | | 
51 07-74|| 52 | 533-1) 53 | 622-1 || 26 25:24 || 27 | 536-6) 28 | 525.6 
58 | 579-2 55 10-14|| 57 | 534-7|| 58 | 623-7 | 30 26-13 | 32 | 534.4]] 33 | 525.7 
3 | 579-9] 28 9] 0 12:15|} 2 531-0] 3 | 632-5 | 35 24-86 | 37 | 532-5) 38 | 525-2 
8 | 580-9 5 12-35 || 7 | 526-1|| 8 | 641-8 40 23-32 || 42 | 534-8] 43 | 524-3 
10 10-92 || 12 | 531-7|| 13 | 648-3 haz ie eS8sail 
18 | 580-5 15 10-97 || 17 | 527-3|| 18 | 652-5] 28 21 | 5 | 24.84) 7 | 536-5] 8 | 529-2 
28 | 580-8 21 08-03 || 22 | 531-4] 23 | 654-7 | 20 25-67 | 22 | 539-6 |) 23 | 525-7 
25 06-76 || 27 | 527-3|| 28 | 654-4 30 23-85 | 32 | 541-3] 33 | 522.7 
48 | 583-7 30 03-92 | 32 | 528-9] 33 | 650-3 | 35 22:58 || 37 | 543-3) 38 | 521-6 
3 | 587-5 35 03-67 || 37 | 530-3 || 38 | 646-6 \| | 39 | 546-0 
33 | 586-7 45 08-12) 47 | 535-8|| 48 | 638-4 40) 22.67 || 42 | 542-6|| 43 | 522-9 
3 | 582-4 50 09-13 | 52 | 531-3]| 53 | 635-5 | 45 | 20-94 | 46 | 540-0 
28 10 | 0 13-12|| 2 | 524.3|| 3 | 632-3 I | 47 | 541-3) 48 | 523-5 
3 | 616.3 10 12-40 | 12 | 513-1) 13 | 625-1 | 50 | 20-92) 51 | 543-3 | 
33 | 615-2 15 10-38 || 17 | 512-2) 18 | 620-1] 28 22 | 0 | 21-73|| 2 | 539:0] 3 | 524-8 
3 | 617-0 20 08-75 | 22 | 509-2) 23 | 615-3 | 15 22-92 17 | 540-9) 18 | 528-6 
3 | 606-4 25 07-64) 27 | 509-4 | 28 | 613-3 | 35 | 21-86 | 37 | 533-9] 38 | 538-1 
18 | 600-1 30 06-26 || 32 | 511-4|| 33 | 613-5 | 50 | 17-60 | 52 | 540-7) 53 | 538-0 
3 | 597-8 35 04-04 37 | 513-8) 38 | 611-9] 28 23 | 0 | 25 16:03) 2 | 539-6) 3 | 541-2 
40 02-80 | 42 | 514-1) 43 | 608-1 l i 
3 | 578-5 45 04-24|| 47 | 518-6]) 48 | 606-5] 29 6 || 0+ 24 59-63) 2 | 532-5) 3 | 622-2 
8 | 578-3 50 05-11 || 52 | 520-5] 53 | 605-1 || 5 | 24 58-05] 7 | 537-7] 8 | 623-8 
13 | 578-4 55 05-35 || 57 | 522-1) 58 | 603-1 | 10 | 24 58-99] 12 | 539-4 | 
23 | 580-3] 28 11 || 0 06-19|| 2 | 523-1|) 3 | 600-5 | 15 | 25 00-91] 17 | 538-7] 18 | 623.3 
33 | 578-8 10 09-86 || 12 | 523-8) 13 | 594-9 | 20 | 25 00-71) 22 543-4 | 23 | 619-8 
43 | 579-6 20 16-13 || 22 | 556-6) 23 | 549-2 | 25 | 25 00-48 27 | 542-9 | | 
53 | 580-4 25 18-68 || 27 | 549.0) 28 | 524-9 30 | 24 59-97]| 32 | 540-2) 33 | 620-2 
3 | 567-3 30 22-50 || 32 | 537-7|) 33 | 519-4 | 40 | 25 02-12|| 42 | 535-5 |) 43 | 633-3 
13 | 563-4 35 19-73 || 37 | 521-4|| 38 | 520-1 45 | 24 56-23|| 47 | 546-7]| 48 | 628-8 
Birivar. k—0'000140. 
BALANCE. 
k=0-000010. 
* See notes on the Aurora Borealis, after the Extra Observations of Magnetometers. 
