paceanan 4 
TEeRM-DAY OBSERVATIONS OF MAGNETOMETERS, 1845. 
Fepruary 21, 22. 
- BrirILaR | BALANCE Birizar | BALANCE DECLINA- Birizar | BALANCE DECLINA- BIrivaRr 
Observation, Corrected.| Corrected. Corrected.| Corrected, TION. Corrected.| Corrected. TION. 
| Se. Div. | Mic. Div. Se. Div. | Mic. Div. o a Se. Div. | Mic. Div. Sc. Div. 
18%, 2aus on 6h, 
533-9 | 543-6 518-4 | 548-2 | 25 21-44| 533-3 | 564-9 | 25 16-25] 533-7 
536-2 | 542-8 519-5 ” 20-65! 533-0 | 564-9 16-80| 535-4 
| 535-0 © 4 520-9 | 548-4 20:30} 535-3 | 564-8 16-95) 535-6 
| 533-6 | 544-4 521-4 » 20:79} 536-8 | 565-6 16-80| 535-8 
535-4 | 543-4 525-8 | 549-0 20-11} 535-1 566-8 16-45} 536-8 
| 535-8 | 541-7 525-7 in 19-41 | 536-2 | 566-7 16-48} 538-0 
} 537-2 | 541-6 527-0 | 548-9 19-37 | 536-0 | 566-5 16-32} 539.0 
536-9 | 541-5 529-1 a 19-37) 538-5 | 566-6 16:59} 538-8 
536-2 | 542-0 527-3 FA 19-14) 538-7 | 567-4 16-41} 540-7 
I 533-9 | 541-7 528-1 | 548-8 19-49 | 540-0 | 568-5 15-71} 542-3 
536-1 | 540-7 526-9 ” 20-43) 540-6 | 571-0 15-32) 543-3 
534-0 | 540-4 528-1 | ss 19-76 | 535-6 | 573-3 15-47 | 540-1 
194, 23h, ou a 
535-1 | 540-8 529-5 549-4 | 25 19-19} 532-5 | 573-6 5 15-92] 538-8 
| 535-1 | 539-3 530-0 | ,, 18-32] 531-6 | 574-2 16-12| 536-6 
| 535-8 538-1 530-4 | ” 18-41] 533-1 574-9 15-94| 538-7 
533-7 | 538-3 531-9 | 549-7 19-28| 537-7 | 575-7 15-88} 539-4 
534-7 | 537-7 529-3 | a 20-13} 539-4 | 577-2 15-44} 539-2 
H 535-3 | 536-7 27 -du mos 20-50} 538-1 | 579-8 15-09| 538-2 
536-5 | 536-1 526-6 | 549-9 20-09} 535-2 | 580-7 15-12) 538-5 
535-8 | 536-6 532-6 ny 19-59| 535-4 | 580-4 14:98} 539-5 
537-1 | 536-0 527-9 + 19-51} 535-2 | 581-2 14-53 | 539-6 
534-5 | 538-1 533-0 - 19-10} 536-1 | 582-9 14-30} 540-2 
535-8 | 538-3 533-1 | 551-4 18:94} 537-7 | 583-1 14-17| 541-5 
537-8 | 537-5 531-5 | es 19-62} 541-4 | 583-4 : 542-7 
205, ob. 4h, 8h, 
537-6 | 537-9 527-3 | 552-2 | 25 19-29! 536-9 | 586-3 14-33| 541-8 
537-0 | 537-6 530-6 _ 19-93| 540-3 | 586-7 13-99| 542-3 
537-9 | 537-5 529-1 | 551-8 20-67) 540-5 | 589-9 13-91] 540-2 
538-0 | 538-2 529-8 A 21-56) 536-6 | 592-9 14-03| 537-8 
533-4 | 539-5 528-1 . 20-40) 527-7 | 597-8 14.43| 537-3 
533-7 | 540-0 530-8 | 553-7 19-91| 526-4 | 600-2 13-86| 537-2 
| 536-6 | 539-3 531-2 * 19-37| 523-9 | 602-0 13-56| 536-2 
535-6 | 540-2 531-5 3 17-74| 527-2 = 14-01] 536-3 
534-6 | 540-1 531-1 | 554-6 16-82| 519-1 | 606-7 13-94] 535-9 
| 537-1 | 539-2 532-8 | 555-9 16-65| 513-8 | 608-4 13-63| 537-3 
] 536-4 | 539-0 534-1 “ 14.67| 514-0 | 613-7 13-43] 537-4 
534-5 | 539-1 H33:24 as 11-61} 520-4} 614-1 3 538-0 
| 
\ Pals ve 52, on 
i 524-4 | 537-0 532-2 | 556-6 | 25 09-98] 527-5 | 617-0 12:09| 541-8 
533-4 | 536-3 528-5 | 557-6 08-41] 529-3 | 619-5 12-72} 540-0 
} 530-0 | 537-4 531-7 | 558-6 08-58} 535-3 | 621-0 12.02| 540.7 
\| 527-9 | 539-3 529-7 | 559-5 09-26 | 541-2 | 623-5 12-40} 538-0 
| 526-9 | 540-6 529-0 | 559-3 10-47| 540-4 | 625-8 09-35} 534-0 
| 525-2 | 541-2 529-9 | 559-5 11-07} 543-9 | 622-6 06-54| 534-9 
524-9 | 541-5 530-1 | 559-7 11-81} 540-8 | 624-3 05-79| 533-7 
| 525-7 | 540-3 533-2 | 559-5 12-46| 540-4 | 622-3 02-99} 536-8 
i| 525-2 ai 536-6 | 560-4 14-18} 540-9 | 619-2 02-15} 542-7 
523-3 | 543-9 538-2 | 561-9 15-91} 538-3 | 616-4 03-75| 543-6 
| 521-0 | 544.4 538-1 | 562-8 16-33 | 535-6 | 611-0 04-64} 545-3 
518-7 “: 537-4 | 563-8 15-88] 533-7 | 610-3 . 546-1 
Birizar. Observed 2™ after the Declination, k=0:000140. BALANCE. Observed 3™ after the Declination, =0-000010. 
Baa 
Corrected.| Corr 
Mie. Di 
605:8 
603-5 
600.0 
598-2 
594.0 
591-7} 
589-7 | 
587-2 
583-6 | 
582-6 
582-2 
582-6 | 
581-8 
583-3 
581-7 
5806 
579-1 
578-5 
577-2 | 
575-8 
575:3 
5741 
573.0 | 
573-0 
572-7 | 
575-2 
576-7 
576-5 | 
578-3 
578-7 
580-0 
579-7 
579:0 
577-2 
575-9 | 
578-1 
578-0 
577-7 
578-2 
578-2 | 
The temperature of the bifilar and balance magnets, and the observers’ initials, will be found at the corresponding hours in the foun 
Observations of Magnetometers. 
When double commas (,,) occur in the column for the balance magnetometer, the needle was examined, and no change from the previous 
position being appreciable, the micrometers were not altered. 
