100 EXTRA OBSERVATIONS OF MAGNETOMETERS, FeBpRUARY 25—Marcu 9, 1845. 
Gott. BIFILaRr BALANCE Gott: BIFILAR BALANncr Gore 1a 
ean DECLINATION. Gacsnctea! Gesnectade a DECLINATION. Gomracted. Garrectaa: Say DECLINATIO} 
1 | 
an. | Min.| 2° ¢ || Min. | Se. Div. || Min. |Mic.Div.f a. on. [| Min.| 2 Min. | Sc. Div. || Min. |Mic’Div.] a. b. || Min.]| 2° # 
25 14 | 15 | 25 11-51] 17 | 525-1] 18 | 483-5] 26 15 || 40 | 25 14-40]| 42 | 533.9] 43 | 510-5] 28 14 || 25 | 25 O6moI 
25 15 0} 14.94 || 2 | 522.7 3 | 483-6] 26 16 0 | 12-62} 2 | 534-5 3 | 522-3 35 05. 
1} 10 | 16-19 | 12 | 519-4 || 13 | 487-5 31 11-98 || 32 | 532-0]| 33 | 533-5 46 06:5: 
even 15-67 | 17 | 520-6|| 18 | 490-0} 26 17 0 12.38 2 | 535-5 3 | 539-0 55 08: 
25 16} 0} 14-51 2 | 528-8 3 | 500-5 28 15 0 08: 
O5usit) OM! 08-72) 2 | 524.8 3 | 527-57 27 2 0 | 25 22-03 2 | 541-2 3 | 560-8 -————_|_ =| 
| 10 | 10-48 | 12 | 522-0] 13 | 530-7 13 | 18-27 || 14 | 530-2]) 15 | 562-1] 3 9 0 | 25 09-35) 
| 15 11-84} 17 | 521-8} 18 | 529-6] 27 3 0 | 17-81 2 | 535-0]| 3 | 567-2 5 04. 
2519 | 0} 17.93] 2] 534-5] 3 | 509.7 | 10 06: 
15 | 15-81 | 17 | 541-1]/ 18 | 502-0] 27 8 0 | 25 01-59} 2 | 549.2 3 | 575-1 15 09. 
30 | 14-71 | 32 | 540-0 || 33 | 505-1 10 | 24 59-79|| 12 | 546.2}! 13 | 573-8 25 06: 
25 20 | O 13-19] 2 | 537-9]) 3 | 507-0 15 | 24 59-70] 17 | 541-9]| 18 | 574-8 35 10. 
| 20 | 25 01-22|| 22 | 536-8]| 23 | 578-7 50 12: 
26 1] O| 25 17-46 2 | 511-6] 3 | 563-8 30 | 24 58-76 || 32 | 530-7 || 33 | 580-5] 3 10 0 12. 
I 12 | 518-7] 13 | 573-0 35 56-10 || 37 | 533-1]) 38 | 578-5 }|————_|_ = 
| 15 14-46 17 | 524-5] 18 | 573-9 40 | 54-59 || 42 | 535-1] 43 | 578-5] 4 10 0 | 25 104 
| 20 21-46 | 22 | 523-7) 23 | 577-1 45 52-82 || 47 | 534-5]/ 48 | 577-8 10 12.5 
| 30 21-71] 32 | 529-0}! 33 | 581-0 50 50-90 || 52 | 537.2]) 53 | 575-2 15 12s 
26) «2 || 0 22-89 2 | 523-0] 3 | 582-3 55 49-91 || 57 | 543-1] 58 | 574-4] 4 11 0 13 
26) *3- 5.0 23-54|| 2 | 541-8] 3 | 591-3] 27 9 0 52-40 2) 544.3 3 | 574-4 10 11 
| 10 23-48 | 12 | 522-9] 13 | 594-9 5 55-77 || 7 | 541-7|| 8 | 574-2 20 11 
30 25-06 | 32 | 532-0] 33 | 616-2 10 | 24 57-37|| 12 | 539-9} 13 | 573-5] 4 12 0 11-2 
35 21-53 || 37 | 522-0]! 38 | 628-2 22 | 25 01-46|| 23 | 535-1|| 24 | 570-0 + = 
40 11-24 | 42 | 527-8}| 43 | 637-3 30 03-94 || 32 | 532-6]! 33 | 567-2] 5 10 1 | 25 10 
45 08-31 | 47 | 532-9] 48 | 651-8 55 04-42 || 56 | 523-2]) 57 | 565-7 10 12:1 
50 06-97 | 52 | 532-4 || 53 | 660-9} 27 10 0 04-32 2 | 526-5 3 | 565-6 15 12. 
55 03-47 | 57 | 543-7]! 58 | 665-2 10 06-12) 12 | 533-0]| 13 | 563-8] 5 11 0 12-2 
26 4 0 03-34] 2 | 546-6 3 | 668-4 20 07-44 || 22 | 533-2|) 23 | 562.2 —— 
| 10 06-06 | 12 | 549-2]! 13 | 668-8} 27 11 0 10-25 2 | 531-4 3 | 560-8] 7 10 0 | 25 09-4 
| 25 13-49 | 27 | 541-8} 28 | 651-7] 27 12 0 08-95 2 | 534-5]| 3 | 550-3 10 10-4 
| 30 14.06 || 32 | 542-4|| 33 | 644-2 33 13-52 || 34 | 529-7|| 35 | 551-3 15 10. 
40 16-59 || 42 | 545-7|) 43 | 632-7] 27 13 0 14-13 2 | 529-0] 3 | 543-8 20 10: 
50 17-67 | 52 | 540-2] 53 | 623-4] 27 14 0 19-48 || 2 | 524-1 3 | 502-4 25 11.7 
26 5 0, 17-33 || 2 | 539.9]| 3 | 618-6 10 16-45 || 12 | 526-6|| 13 | 494.6 30 12+( 
25 16-15 | 27 537-0 || 28 | 611-9 20 14-73 || 22 | 530-3] 23 | 495-0] 7 11*] 0 10-3 
26 6 | 0 14.71 2) 536-1 3 | 603-5 30 13-52)| 32 | 529-9} 33 | 499.3 |j——|—_|—___ 
27 15 0 11-41|| 2 | 534-8] 3 | 518-0] 9 14 0 | 25 14 
26 10 0 | 25 11-64) 2 | 541-8 3 | 550-8 - 10 17.4 
10 10-23 | 12 | 542-5) 13 | 548-8] 28 6 0 | 25 07-47 2 | 539-6|| 3 | 596-4 15 17-2 
| 15 10-48 | 17 | 543-2|| 18 | 548-7 10 09-15 || 12 | 536-6]| 13 | 595-9 20 154 
26 11 0 | 09-19] 2 | 533-3 3 | 554-3 30 12-11 || 32 | 526-6|| 33 | 591-3 25 134 
40 07-99 | 41 | 538-1 || 42 | 554-9] 28 7 0° 12-95 || 2 | 542.4|| 3 | 582-0 30 12. 
52 13-39 | 53 | 536-0 || 54 | 544.2 35 11 
55 13-56 | 57 | 530-1) 58 | 541-6] 28 10 0 | 25 01-95 2 | 543-0|| 3 | 568-9 40 114 
26 12] O| 12-89) 2 | 525.4 3 | 538-6 5 01-01 7 | 542-6|| 8 | 568-1 45 11. 
10 10-70 | 12 | 522-1}! 13 | 538-9 15 02-89 || 17 | 534-1]) 18 | 566-4] 9 15 0 12.6 
1 15 | 11-51 | 17 | 531-2) 18 | 539-2 20 02-23 || 22 | 529-3) 23 | 566-5 10 12.6 
20 14.94] 22 | 535-6 || 23 | 536-0 25 01-92 || 27 | 527-3 15 15:8 
25 | 16-92 || 27 | 536-5 || 28 | 530-3 30 02-37 || 32 | 526-5]| 33 | 567-5 20 18-4 
| 30 | 17-36 || 32 | 538-7 | 33 | 523-1 35 03-58 || 37 | 529-2|| 38 | 567-7 25 20: 
| 35 | 17-83, 37 | 537-6) 38 | 517-1 40 05-70 | 30 20-7 
| 40 17-29 || 42 | 536-9) 43 | 512-6] 28 11 || 0 09-40}} 2 | 531-2]| 3 | 566-5 35 21:1 
| 51 13-86 | 52 | 533-1|) 53 | 509-9 10 10-88 || 12 | 533-7]) 13 | 565-9 40 20-2 
2613) O 12-72)| 2 | 533-2) 3 | 512-8 | 31 11-55 || 32 | 529-9) 33 | 568-2 45 19-5 
| 20 | 09-93 | 22 | 536-3 || 23 | 520-54 28 12 | 0 11-99 2 | 534.4 I 3 | 565-3 50 17-4 
26 14 0 11-42) 2 | 529-4 | 3 | 533-1] 28 13 || O 10-94 2 | 529-4|| 3 | 561-8] 9 16 0 14-3 
2615 | 0} 18-47] 2 | 530-2 3 | 506-8 10 14-10 || 12 | 526-6|| 13 | 559.7 10 11-7 
| 6 16-93) 7 | 531-7) 8 | 499-8} 28 14 || 0| 05-60) 2 | 533-0]! 3 | 504-2 15 10-6 
| 15 16:53) 17 | 538-2) 18 | 499.7 iio 05-05 7 | 530-8 8 | 503-0 20 09-6 
| 20 | 17-39 | 22 | 536-2} 23 | 500.9 10 05-05 || 12 | 528-5 || 13 | 504.9 25 4 
30 | 15:22) 32 533-6] 33 | 504-0 15 05-11 | 17 | 527-5 30 09-29 | 
Birivan. k=0-000140. BaLaNnce. k=0:000010. 
* See notes on the Aurora Borealis, after the Extra Observations of Magnetometers. 
Feb. 254 185 10™,. The magnets evidently disturbed throughout the night, but within small limits. 
March 44 10" 15™, Instruments slightly disturbed. 
