TrerM-Day OBSERVATIONS OF MAGNETOMETERS, 1845. 71 
January 22, 23. Fesruary 21, 22. 
DECLINA- BiFILaR | BALance | DeEcLINA- Brrizaz | BaALance J DEcLiNA- BIFILaR | BALANCE DEcLINA- Biriuar | BaLance 
TION. Corrected. | Corrected. TION. Corrected.| Corrected. TION. Corrected. | Corrected. TION. Corrected.| Corrected. 
is Se. Diy. | Mic. Div. fe 4 Sc. Div. | Mic. Div. Se. Diy. | Mic. Div. Se. Div. Mie. Div. 
oh. 6b, 104, 144, 
25 19-75| 538-4 | 591-9 : 539-3 | 605-4 537-0 . : 534-6 
19-31] 537-2 | 594-1 . 539-7 | 604-1 : 536-5 . . 533-6 
20-27| 536-5 | 596-3 : 541-0 | 604-1 . 535-4 6 : 534-2 
20-99| 539-0 | 598-4 : 541-0 | 601-0 534-3 . . 533-5 
20:77| 534-4 | 601-1 : 540-1 | 600-1 532-2 : : 534.2 
20-52} 535-0 | 603-7 : 539-8 | 599-2 533-1 . : 534.7 
20-27| 537-6 | 605-5 : 538-9 | 599-3 532-3 : . 534.9 
19-82] 532-5 | 608-5 . 539-2 | 598-0 533-5 . 534-3 
17-40} 532-5 | 608-6 : 539-0 | 596-2 534-4 5 . 532-8 
17-33| 534-3 | 610-4 . 539-3 | 595-7 535-4 : : 533-6 
17-:04| 529-2 | 614-0 5 539-7 | 595-7 536-8 E 5 534.2 
17-10} 525-4 | 616-8 . 540-2 538-6 . 89 | 533.4 
3h, pe 115, 15%, 
17-12 | 525-2 616-6 . 540-4 540-6 . . 533-3 
18-07 | 526-8 615-3 . 540-2 -: 537-2 o D 533-9 
18-90 | 527-5 615-1 ‘ 540-1 . 538-6 : ‘ 534-2 
19-78} 524-8 | 615-7 . 540-6 D 540-1 
20-85| 525-3 | 614-5 D 540-4 D 540-9. 
21-57 | 525-2 614-3 . 539-6 537-2 
21-07 | 526-6 608-8 c 538-4 537-6 
20-77 | 528-6 | 608-2 D 539-7 534-9 
19-61 | 532-4 609-4 D 540-0 532-8 
19:04} 535-1 611-9 : 542-2 531-9 
18-84 | 534-8 610-4 . 538-7 533-0 
18-63 | 537-1 610-6 . 537-6 | 531-0 
4h, gh, 12h. 
18-68 | 538-2 | 611-1 . 535-8 527-3 
18-60] 541-9 | 613-4 : 535-1 | 527-1 
19-10} 541-5 | 615-6 . 534-8 | 525.4 
19-51] 541-4 | 617-0 . 533-8 | 528-0 
19-26] 542-7 | 617-8 . 532-9 529-4 
19.28] 542-4 | 619-7 533-1 531-5 
19-78] 540-9 | 622.4 +33 | 533-1 531-0 
19-14| 536-9 | 623-7 76| 532-8 15-79| 533-0 
18-99| 535-2 | 623-2 -84| 532-2 18-21} 531-0 
19-07 | 534-0 | 622-0 . 530-8 18-40 | 528-5 
19-14] 532-9 | 620-0 . 529-1 18-81 | 528-2 
18-45 | 536-2 | 618-2 . 525-1 17-51} 530-4 
5h, gh. 135, 
17-20| 531-0 620-4 D 522-5 16-79 | 531-4 
18-21 | 530-1 618-8 - 521-0 15-83 | 531-6 
17-93 | 530-1 617-1 D 520-5 14-94 | 533-0 
17-49 | 532-6 616-7 . 521-6 14-91 | 534-7 
16-89 | 530-3 615-6 . 532-4 15-69 
16-28 | 532-9 615-1 D 555-7 15-49 
16-75 | 534-1 613-6 : 553-7 15-85 
16-38 | 535-7 611-7 . 545-2 15-38 
16-35 | 538-4 609-0 9- 536-3 15-20 
16-28 | 542-9 606-5 . 531-1 15.27 
15-86 | 542-4 606-1 : 534-6 15-38 
15-99 | 540-0 606-0 : 534-1 14-60 
Brrivar. Observed 2™ after the Declination, s=0-000140. BALANCE. Observed 3™ after the Declination, =0-000010. 
The temperature of the bifilar and balance magnets, and the observers’ initials, will be found at the corresponding hours in the Hourly 
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. 
_ Jan. 234105. Extra Observations made. 
