) ExTrA OBSERVATIONS OF MAGNETOMETERS, SEPTEMBER 17—OcToBER 20, 1845. 111 
Gott. BIFILAR BALANCE Gott. BIFILAR BALAN! 
ete. Mean DECLINATION. Corrected. Corrected. Mean DECLINATION. Corrected. Once 
Time. Time. 
Min. | Mic. Div. id.) Uh Min. 2 v Min. | Se. Div. || Min. | Mie. Div. ids he Min. o 4 Min. | Se. Div. |} Min. | Mic. Div, 
456-61 19 10 | 30 | 24 57-21) 32 | 524-3] 3; | 431-0] 3 15 0 | 25 08-16 2 | 540-8 3 | 414.0 
13 | 458-8 40 | 24 59-70] 42 | 524-4] 43 | 430-2 ee 
23 | 456-77 19 11 0 | 25 05-77 2 | 525-3 3 | 433-8] 6 12 0 | 25 11-61 2 | 554-1 3 | 431-6 
3 | 447-2 ee — 15 08-65 || 17 | 548-2|| 18 | 428-3 
23 | 423-37 20 10 0 | 25 04-22 2 | 540-0 3 | 457-9] 6 13 0 06-73 2 | 544-5 3 | 429-6 
33 | 422-5 10 | 24 97-10} 12 | 553-6} 13 | 447-9 | 
38 | 426-1 15 54-68] 17 | 559-9] 18 | 443-47 9 11 0 | 24 43-72 2 | 512-3 3 | 420-3 
44 | 428-1 20 54-92] 22 | 560-1] 23 | 440-2 5 42-71 7 | 522-2 8 | 403.4 
48 | 424.1 30 | 24 56-97] 32 | 544-5] 33 | 439-3 . 10 42-44) 12 | 524-5|| 13 | 393-6 
53 | 416-0} 20 11 0 | 25 01-78 2 | 527-8 3 | 443-3 15 44-97 | 17 | 518-1]) 18 | 377-5 
58 | 412-2 21 05-89 || 22 | 533-1) 23 | 443-4 20 | 24 53-58 || 22 | 499.7) 23 | 357-5 
3 | 410-8f 20 12 0 09-39 2 | 533-8 3 | 436-1 25 | 25 02-48] 27 | 476-9 || 28 | 328-3 
8 | 408-8 = — - 3 10-36 | 32 | 457-2] 33 | 296-0 
13 | 404-3) 24 8 0 | 25 11-10 2 | 557-7 3 | 441-3 | 30 13-74 | 37 | 472-1]| 38 | 305-9 
23 | 398-6 20 10-98 || 22 | 551-7) 23 | 442-4 40 11-77 || 42 | 433-1] 43 | 263-8 
28 | 394-5] 24 9 0 10-95 2 | 557-7 3 | 437-4 45 | 25 00-98] 47 | 450-7) 48 | 245.4 
33 | 389-5 30 11-21 || 32 | 557-2]) 33 | 436-8 50 | 24 55-36 || 52 | 482.2 || 53 | 239.8 
43 | 373-4} 24 10 0 10-80 2 | 555-2 3 | 437-8 55 53-74 || 57 | 493-7]| 58 | 233-8 
53 | 362-1 == 9 12 0 53-32 2 | 499-1 3 | 236-8 
3 | 339-6} 25 10 0 | 24 56-40 2 | 544-0 3 | 453-0 5 53-54 7 | 491-5 8 | 243-1 
18 | 266-8 10 | 24 56-57 || 12 | 542-5} 13 | 449-1 10 52-50 | 12 | 498-1 || 13 | 244-8 
25 11 3 | 25 07-81 4 | 547-7 5 | 409-0 15 52-46 || 17 | 495-4 || 18 | 248-9 
20 09-86 || 22 | 541-6) 23 | 406-1 25 46-65 | 27 | 503-4|| 28 | 262-5 
23 | 238-1] 25 12 0 07-71 2 | 534-9 3 | 396-5 30 46-52) 32 | 504-0) 33 | 266-8 
40 48-83 | 42 | 501-6 || 43 | 272-8 
25 16 0 | 25 14-13 2 | 518-6 3 | 382-4 50 56-07 || 52 | 498-2}) 53 | 281-6 
28 | 225-9 31 17-26 || 32 | 521-5|| 33 | 377-6] 9 13 0 | 24 54-01 2 | 496-7 3 | 298-3 
33 | 216-2] 25 17 0 12-76 2 | 529-8 3 | 388-0 15 | 25 01-14]) 17 | 510-0}) 18 | 344-1 
38 | 216-3 ed - - 32 05-97 || 33 | 518-7 || 34 | 360-0 
43) | 215-74 27 7 0 | 24 43-06 2 | 553-0 3 | 487-1 9 14 0 | 25 01-65 2 | 526-6 3 | 323-4 
48 | 215.7 5 46-18 7 | 559-7 8 | 482-3 15 | 24 55-76] 17 | 526-8] 18 | 309-5 
53 | 224-1 | 10 52-04 | 12 | 553-2|| 13 | 482-6 30 | 24 52-94] 32 | 519-5] 33 | 307-3 
58 | 229-7 15 55-37 || 17 | 542-0} 18 | 484-1 45 | 24 57-78) 47 | 517-7]) 48 | 314-1 
3 | 239-0 20 57-08 || 22 | 533-1) 23 | 485-5] 9 15 0 | 25 00-06 2 | 533-1 3 | 319-5 
13 | 261-2] 27 8 0 | 24 57-56 2 | 528-9 3 | 485-2 15 00-06 | 17 | 539-4} 18 | 318-5 
23 | 277-6 40 01-61 || 42 | 538-8) 43 | 350-2 
43 | 292-0} 27 11 0 | 25 16-93 2 | 519-6 3 | 338-8] 916] O 06-73 2 | 535-2 3 | 372-6 
48 | 292-9 10 05-35 || 12 | 535-3] 13 | 319-3 | 
3 | 316-1 | 15 00-80 | 17 | 561-9] 18 | 324-0] 9 22 0 | 25 20-77 2 | 521-1 3 | 436-7 
20 04-24 || 22 | 560-6 || 23 | 323-7 36 15-54] 37 | 533-2]) 38 | 429-5 
3 | 424-3] 27 12 0 09-57 2 | 537-1 3 | 342-8] 9 23 3 16-92 4 | 528-5 5 | 437-6 
23 | 420-1 — is — —|——_———_—__ ——— 
43 | 418-9 1 16 0 | 25 13-90 2) 551-1 3 | 396-1] 15 10 0 | 25 06-73 2 | 540-6 3 | 414-9 
3 | 425-9 10 10-65 || 12 | 550-3 || 13 | 397-4 6 04-24 7 | 544-2 8 | 412-9 
23 | 425.2 1a 0 11-37 2 | 540-2 3 | 408-7 20 00-48) 21 | 544-8 || 22 | 410-2 
3 | 402-8 —_—— -—— | — -—— 15 11 0 05-20 2 | 537-0 3 | 413-9 
13 | 402-7] 3 5 0 | 25 07-04 2 | 534-1 3 | 475-7 — 
28 | 404-6 20 04-56 || 22 | 546-6] 23 | 483-4] 17 11 0 | 25 12.48 2 | 552-9 3 | 425-4 
44 | 408-1 25 07:07 | 27 | 541-4|| 28 | 484-8 45 06-29 || 27 | 540-6 || 28 | 418-0 
3 | 407-9 30 07-47] 32 | 541-3]} 33 | 485-2 45 | 25 03-27] 47 | 530-6] 48 | 421-6 
eee 36 0 11-75 2 | 535-9 3 | 482-6] 17 12 0 | 24 59-76 2 | 540-3 3 | 423-7 
3 | 431-2 33 | 25 02-72] 34 | 534-3 || 35 | 430-4 
33 | 425-8] 3 12 0 | 25 04-37 2 | 547-5 3 | 433-1] 17 13 0 04-41 2 | 534-7 3 | 431-1 
3 | 428-0 10 03-70 | 12 | 545-3) 13 | 433-3 —|—_-——__|——- L—— 
=| 20 03-95 || 22 | 542-5] 23 | 431-8] 19 14 0 | 25 02.82 2 | 540-5 3 | 405-3 
3 | 475-0] 3 13 t 0 08-41 2 | 540-3 3 | 432-3 30 04-91 || 32 | 541-7|| 33 | 407-5 
18 | 465-9] 3 14 0 18-77 | 2 | 550-1 3 | 407-0] 19 15 0 05-96 2 | 542-9 3 | 406-1 
33 | 447-9 10 14-70 || 12 | 546-9] 13 | 399-9 
3 | 429-6 20 10-40 || 22 | 545-3 || 23 | 399-1] 20 3 0 | 25 25-43 2 | 542.7 3 | 445-5 
13 | 427-5 30 08-93 | 32 | 544-0] 33 | 401-8 15 24-75) 17 | 537-3] 18 | 452-1 
23 | 432-5 40 08-61 || 42 | 542-2]| 43 | 406-4 25 22-10 || 27 | 527-3|| 28 | 455-7 
Biritar. k=0:000140. = Batance. k=0:000010. 
Sept. 204 16, Instruments slightly disturbed throughout the night. 
Sept. 284 13h_18. Idem. ~ 
Sept. 294 13h—18h, Idem. 
