: DarLy OBSERVATIONS OF MAGNETOMETERS, JANUARY 18—Fepruary 1. 1843. 3 
ii Gottingen BIFILAR, BALANCE. Gottingen . BiFivar. BALANCE. 
Mean Time of DECLINA- Mean Time of DECLINA- 
Declination TION. Cor- |Thermo-|| Cor- /Thermo: Declination TION. Cor- |Thermo-|| Cor- /Thermo 
- Observation. rected. | meter. |} rected, | meter. Observation. rected. | meter. || rected. | meter. 
fly cc bh m. aie Se. Div. 5) Mic. Div. ° da ohm ol His, Se. Div. z Mic. Diy. ° 
Jan . 18 18 O}] 25 27-81 538-5} 60-8 || 755-8| 61-8 | Jan. 25 18 0/|| 25 25-27 537-4] 59-3 || 757-9| 61-0 
Lain 20 0 27-98 536-2} 59-5 || 747-7} 62-0 20 0 24-87 537-9} 58-8 || 760-3) 60-3 
Hy! 22 0 27-78 532-5] 59-3 || 763-3} 61-0 22 0 24-06 530-9} 58-3 || 765-5) 60-0 
Jan. 19 0 O 29-83 529-3| 58-3 || 771-8| 59-8 | Jan. 26 0 O 27-22 531-6} 58-9 || 769-8] 60-8 
4 2 0 31-99 || 533-4] 58-3 || 775-1] 60-0 20 28-94 || 535-7| 59-7 || 759-1] 61-4 
a’ 4 0 30-00 542-1] 59-0 || 780-8} 60-3 4 0 26-48 537-6} 59-4 || 765-9] 61-0 
wid 6 0 29-04 540-7| 60-3 || 767-9] 61-5 6 0 25-76 || 538-3] 59-2 || 762-0) 61-0 
8 0 27-85 538-0} 60-3 || 758-1} 61-5 8 0 24-10 529.9] 59-0 || 768-2| 60-5 
0 25-48 533-4] 59-2 || 769-4] 60-5 10 0 22-62 || 534-7| 60-0 || 769-1} 62-6 
0|| 25 27-29 537-2] 55-8 || 773-1| 57-4 18 0O|| 25 24-33 540-9} 60-7 || 752-1) 62-4 
0 27-40 538-7} 55-9 || 774-3] 57-8 20 O 24-77 540-5] 60-9 || 751-2| 62-5 
0 27-17 533-3} 55-3 || 775-5| 56-8 22 0 25-27 534-2} 60-3 || 756-6) 61-6 
0 30-55 539-7| 56-1 || 777-0} 57-5 | Jan. 27 0 0 28-28 536-5| 60-7 || 764-2) 62-3 
0 32 02 532-5} 56-7 || 776-9] 57-8 2 0 29-31 540-3} 60-8 || 757-7| 62-5 
0 31-73 540-7| 57-9 || 776-2} 59-0 4 0 26-55 542-1| 60-5 || 756-9} 62-0 
0 29-95 538-3} 57-2 || 779-7| 58-6 6 0 26-35 541-5} 60-2 || 753-9] 61-7 
0 29-62 536-8| 56-7 || 773-1} 58-2 & 0 25-66 543-4| 62-4 || 747-8| 64-0 
0 28-27 537-6| 55-7 || 774-9| 57-0 10 0 25-41 539-5| 63-2 || 746-5) 64-6 
0]| 25 29-36 536-4; 49-8 || 778-8| 52-0 18 0|| 25 21-31 538-9| 57-8 || 711-5] 58-7 
0 29-08 543-4| 53-0 || 778-9] 55.8 20 0 24-11 539-6 | 57-9 || 744-8) 59-4 
0 28-57 534-1] 50-8 || 776-9] 52-9 22. '0 23-95 535-4| 58-2 || 758-4) 60-0 
8 30-48 534-6| 52-7 || 775-6| 55-0 | Jan. 28 0 O 32-72 531-3| 58-7 || 758-2) 60-3 
0 29-69 539-2! 53-4 || 774-0] 55-3 2 0 29-75 537-2| 58-8 || 755-5| 60-5 
0 27-00 540-4] 53-9 || 774-8] 55-5 4 0 29-31 539-9| 58-2 || 765-2! 59-6 
0 26-25 541-5| 55-2 || 776-1) 56-7 6 0 26-66 526-5] 56-2 || 859-4] 57-2 
0 25-46 540-8| 54-9 || 771-6] 56-5 8 0 20-87 524-2} 55-6 || 842-0] 57-2 
0 24-67 539-1] 54-3 || 765-7| 56-0 10 O 20-88 533-1| 58-5 || 805-2} 61-0 
0|| 25 25-14 531-1| 42-2 || 733-5] 43-8 | Jan. 29 18 O|| 25 24.48 540-6| 54-3 || 723-1} 55-0 
0 24-53 533-2} 42-3 || 740-5] 43-0 20 0 25-34 535-4| 54-8 || 751-6] 56-4 
0 23-30 527-3| 41-8 || 746-8) 42-4 22 0 22-94 531-7| 54-6 || 756-6) 55-8 
0 25-68 528-6| 42-2 || 751-0} 42-7] Jan. 30 0 O 26-67 533-3| 54-0 || 755-9) 55-4 
0 29-65 534-1} 43-0 || 741-2] 43-4 2 0 28-54 532-2| 57-3 || 770-1} 58-9 
0 27-13 536-5} 44-0 || 749-2) 44-1 4 0 25-59 542.9] 59-8 || 767-4] 61-5 
|e (REMC R eee) < acc sell «ARions ||! cemsien 6 0 24-55 534-9| 58-7 || 767-3} 60-0 
0 20-40 535-6| 44-0 || 746-0} 44-2 8 0 24-10 533-4| 56-7 | 772-1) 58-1 
0 23-59 533-7| 44-2 || 743-8] 44-5 10 0 22-69 537-1] 58-8 |) 768-4| 61-0 
i 18 0] 25 21-29 537-1} 52-1 || 735-1] 51-8 18 0!}| 25 23-39 538-8| 58-3 || 754-3) 60-0 
: 20 0 24-30 543-0| 53-7 || 740-7} 53-4 20 0 24-35 535-7| 56-7 || 757-9| 58-4 
d 22 0 23-06 537-2| 54-7 || 744-8] 54-9 22 0 24-00 536-0} 56-7 || 762-4] 58-4 
24 0 0 26-70 534-3| 56-3 || 743-7] 56-5] Jan. 31 0 O 25-88 530-4} 59-0 || 764-1} 60-6 
2 0 28-15 537-2} 56-9 || 741-1] 57-2 2 0 26-79 532-2| 60-9 || 765-8} 62.3 
4 0 26-26 539:0| 57-4 || 750-6| 58-2 4 0 25-39 538-3| 61-0 || 764-1) 62-5 
i 6 0 24-87 539-9| 57-0 || 750-1} 58-3 6 0 24.48 531-9| 59-0 || 758-8) 60-5 
f 8 0 25-14 540-8} 57-7 || 751-8] 59-1 8 0 25-31 536-6| 58-8 || 751-2] 60-0 
| 10 0 25-46 542-1} 57-9 || 754-6] 59-5 10 0 24-04 537-8| 59-7 || 753-9} 61-0 
| 18 O}| 25 22-43 5342] 55-9 || 741-9] 57-5 18 OQ|| 25 24-03 532-6| 54-7 || 739-5} 56-6 
’ 20 O 24-60 535-0] 55-9 || 751-2} 57-8 20 0 24-28 538-2| 56-8 || 764-7) 59-5 
22 0 25-43 531-5] 55-7 || 758-9} 57-0 22 0 25-43 534-5] 55-6 || 762-8] 58-0 
25 0 0 27-19 532-5| 58-0 || 763-5| 60-7] Feb. 1 0 0 26-94 535-3} 54-5 || 762-0} 56-5 
{ 2 0 29-65 536-3] 58-8 || 767-2} 61-1 2 0 27-14 536-3| 54-9 || 7621} 56-5 
bel 4 0 28-07 540-9| 59-8 || 775-5| 61-6 4 0 24-74 539-2} 59-5 |] 762-2] 61-3 
\ 6 0 26-10 538-9} 58-9 || 771-1| 60-5 6 0 25-41 535-5] 58-0 || 759-9| 59-7 
8 0 25-95 539-4| 59-4 || 772-6} 61-2 8 0 24.47 537-2] 58-3 || 759-0} 60-0 
k 10 O 25-09 535-3} 59-4 || 768-0] 61-3 10 0 23-95 || 535-9| 57-8 || 757-9| 59-7 
if DECLINATION. Torsion removed, circle reading,—Jan. 234 23, 4°; 284 3b, 18°; 304 23h, 18°. 
£ BIFILAR. k=0:0001248. BatancE. k=0:000015 approximately. 
fey: Jan. 314 64 30™, Declination reading 25° 17”88. 
