EXTRA OBSERVATIONS OF MAGNETOMETERS, JANUARY 0—9, 1845. 
TROT BUFILAR BALANCE A DEORE ANON BIFILAR BALANCE 
4 Corrected. . || Corrected. Time. : Corrected. Corrected. 
Min. = nS Min. | Se. Div. || Min. | Mic. Div. cL Paid. Min. ¢ “s Min. | Se. Div. || Min. | Mic. Div. 
O | 25 11-17 2 | 532-8 3 | 615-3] 9 7 || 15 | 25 11-01] 17 | 534-1]) 18 | 665-1 
10 12-92 |} 12 | 540-9] 13 | 611-9 25 09-96 || 27 | 537-3] 28 | 663-5 
15 13-81 || 17 | 541-3) 18 | 611-5 30 09-08 | 32 | 530-4/) 33 | 667-6 
30 15-98 || 32 | 534-0|| 33 | 605-9 35 09-26 || 37 | 531-5] 38 | 668-8] 
45 11-08 || 47 | 532-1]| 48 | 599-6] 9 8%] O 06-59 2 | 525-0 3 | 688-4 
55 08-68 || 57 927-9 | 58 | 601-6 5 06-43 7 | 524-1 8 | 695-0 
0 08-05 2 | 526-3 3 | 603-4 20 07-78 || 22 | 530-5 || 23 | 726-3 
5 08-14 7 | 526-8 8 | 606-0 25 07-51 || 27 | 536-5 || 28 | 731-1 
15 09-96 || 17 | 528-9 || 18 | 609-1 32 | 534-0] 33 | 730-5 
20 10-98 || 22 | 529-4} 23 | 611-2 35 09-08 || 37 | 536-2) 38 | 726-9 
25 11-39 || 27 | 530-0) 28 | 610-1 50 09-49 || 52 | 522-9) 53 | 728-4 
0 11-91 2 | 533-1 3 | 610-4 55 05-45 || 57 | 528-2]! 58 | 733-6 
— —_—||— — 9 9%) 0 | 25 00-27]) 2 | 558-8] 3 | 766-6 
0 | 25 12-08 2 | 528-7 3 | 643-2 5 | 24 59.12 7 | 580-0 8 | 832-4 
10 10-77 || 12 | 537-6 || 13 | 641-0 10 59-23 || 12 | 554-4 || 13 | 869-7 
15 11-44 |] 17 | 537-5 15 58-42 || 17 | 542-1] 18 | 848-6 
0 12-20 2 | 537-1 3 | 640-3 20 57-34 || 22 | 528-7 || 23 | 820-1 
0 12.67 2 | 531-9 3 | 631-9 25 58-94 || 27 | 516-5] 28 | 806-9 
10 04-44 |} 12 | 535-6) 13 | 630-1 30 | 24 59.43 || 32 | 504-4|| 33 | 789-0 
15 04-24 || 17 | 539-7] 18 | 629-3 35 | 25 00-60]! 37 | 503-4|| 38 | 767-9 
20 01-65 || 22 | 547-5 | 23 | 627-4 40 | 24 56-13 || 42 | 520-9]! 43 | 738-1 
25 03-43)]) 27 | 549.2|| 28 ri 45 | 24 58-36] 47 | 515-4|| 48 | 733-0 
30 06-63 || 32 | 544-7) 33 | 628-4 50 | 24 59-06]| 52 | 511-1]| 53 | 729.9 
40 11-44 |} 42 | 538-4 | 55 | 25 00-18] 57 | 504-3] 58 | 704-9 
0 11-34 2 | 536-2 3 | 626-5] 9 10%] O 04-14 2 | 499.7 3 | 682-3 
30 13-93 || 32 | 534-7 || 33 | 624-6 5 04-31 7 | 543-8 8 | 694-5 
0 12-96 2 | 536-2 3 | 621-2 10 07-13 || 12 | 503-6|| 13 | 640-9 
0 08-19 2 | 537-4 3 | 620-7 15 | 25 04-66 || 17 | 511-5]! 18 | 605-4 
10 08-82 || 12 | 537-4] 13 | 620-6 20 | 24 51-86 || 22 | 599-2|| 23 | 633-4 
0 11-61 2 | 532-9 3 | 619-1 24 26-43 || 24 | 587-7 
— —— — 25 19-63 || 26 | 561-2 
0 | 25 06-68 529-6 3 | 632-5 26 18-89 || 27 | 543-7 || 27 | 580-0 
10 07-34 || 12 | 530-3) 13 | 632-6 28 | 534-4 
0 13-05 2 | 536-0 3 | 621-5 29 22-32) 29 | 529.0 
— — — 30 31-07 || 30 | 517-0]! 31 | 517-6 
0 | 25 11-37 2 | 539-9 3) 593-5 31 | 515-7 
10 10-56 || 12 | 538-3 | 13 | 595-2 32 32-89 || 32 | 515-2 
0 12-02 2 | 535-6 3 | 598-8 33 | 515-4)] 34 | 557-9 
——— ——| 35 31-74 || 35 | 514-7 
0 | 25 14-44]. 2 | 537-3 3 | 602-6 36 34-00 || 36 | 509-9 
| 15 13-46 37 | 506-1|| 37 | 502-3 
32 15-51 || 33 | 535-0] 34 | 610-0 38 36-05 || 38 | 501-8 
0 13-19 2 | 532-0 3 | 608-8 39 | 501-2|| 39 | 499.8 
0 | 25 17-60 2 | 540-0 3 | 597-2 42 41-70 || 42 | 493.9 
15 18-07 || 17 | 542-0 43 | 490-1) 43 | 487-0 
0 17-54 2 | 541-8) 3 | 593-1 44 | 485-2 
es Sas —| 45 40-63 || 45 | 481-3 | 
0 | 25 22.37 2 | 533-0 3 | 607-0 46 | 479.4 
10 24.22 || 12 | 531-0}} 13 | 611-3 47 | 475-9 
20 24-59 || 22 | 528-7] 23 | 614-2 48 | 473-6|| 48 | 471-4 
30 23-11] 32 | 530-2] 33 | 614-2 49 | 474.6 
40 22-87 || 42 | 534-1] 43 612-0 || 50 37-29 || 50 477-0 | 
0 21-90 2 | 532-7 3 614-6 | 51 | 483-2 
0 15-47 2 | 536-9} 3 | 647-9 52 40-15 || 52 | 481.2 | 
15 19-73 || 17 | 533-1] 18 | 658-2 | 53 | 480-1] 53 | 410-9 
20 20-29 || 22 | 532-0] 23 | 658-5 54 | 479-7 | 
30 20-65 || 32 | 532-7 || 33 | 658-2 55 48-27 55 478-9 
0 16-43 2 | 537-6|| 3 653-4 | | 56 | 473-5 
0) 12-93] 2 | 535-4) 3 | 663-0 | 57 | 471-0] 
10 12-22!| 12 | 532-5! 13 | 665-3 58 | 466-5 || 58 | 368-1 
BIrivar. 
k=0-000140. 
BALANCE, 
k=0-000010. 
9 12%| 
* See notes on the Aurora Borealis, after the Hxtra Observations of Magnetometers. 
Jan. 94 10% 23m, 
Jan. 94 11 
22m, 
Bifilar reading probably highest (615) at this time. 
Bifilar vibrating 20 sc. div. 
DECLINATIO 
Min.| ° 
0 | 24 56: 
1 55 
5 46: 
45 
47 
46-70 
18-87 
24 54: 
39: 
