DaAILy OBSERVATIONS OF MAGNETOMETERS, JANUARY 1—18. 1843. 
Gottingen BIFILaR. BALANCE, Gottingen BIrILar. BALANCE, 
Mean Time of DECLINA- Mean Time of DECLINA- ~ 
Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION. Cor- |Thermo-|| Cor- |Therm 
Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter 
da h m. ° 4 Se. Div. . Mic. Div. 2 da h m ) ‘é Se. Div. z Mic. Div. 
Jan. 1 20 Oj 25 29-88 533-4| 36-1 || 740-0] 36-7 | Jan. 11 20 0} 25 23-43 535-0| 47-3 || 778-1 
23° 0 29-51 533-8] 41-0 || 765-2| 42-0 PA (1) 23-04 532-2) 46-0 || 785-0 
van, 2 2° 0 29-62 530-0| 49-8 || 778-2| 50-2 }Jan. 12 0 0 25-63 533-6| 50-0 || 782-9 
5 (0 25-04 536:6| 53-9 || 846-6] 54-9 2 iG 25-85 540-0| 52-1 || 773-5 
4 0 24.18 538-8| 53-8 || 771-4 
20 O}] 25 23-16 528-2| 33-7 || 750-2} 35-5 6 0 23-77 536-1| 51-3 || 773-4 
23 0 30-43 532-1| 43-0 || 785-8| 45-0 8 0 23-59 538-5| 52-7 || 782-0 
Jan, 3) 52 (0 28-72 540-6| 50-2 || 783-9] 51-4 10 0 21:44 537-1| 53-3 || 786-2 
5 0 27-00 539-9| 50-7 || 789-8} 51-8 
20 0|| 25 22-69 535-3| 43-3 || 768-2 
20 O|] 25 26-75 534-8| 48-7 || 785-4| 51-4 22 0 22.42 534-3] 45-5 || 772-0 
23 0 26-72 531-8| 49-0 || 787-4| 50-5 |] Jan. 13 0 0 25-56 534-4| 48-0 || 775-4 
Jan. 4 2 0 29-28 536-0| 51-8 || 789-8| 52-8 2. ie 27-44 539-9| 52-6 || 773-7 
5 (0 27-71 540-5| 54-9 || 783-6} 56-0 ye i | See 538-4| 52-8 || 782-5 
6 0 24-45 537-9| 51-7 || 778-4 
20 O}] 25 26-77 537-4| 48-8 || 774-9] 51-0 8 0 27-29 539-6] 52-7 || 782-1 
23 0 27-76 530-9| 49-5 || 780-8] 51-7 10 0 24-11 540:-4| 53-5 |) 787-3 
Jan. 5 2.0 29-15 541-8| 56-3 || 778-9} 59-0 
5 0 27-74 || 535-3) 52-6 | 785-6) 54:8 20 0|| 25 24-98 || 536-4) 46-9 || 775-3 
22 0 23-79 529-8| 45-4 || 781-2 
20 0O}| 25 27-02 533-8] 45-0 | 773-4) 47-3] Jan. 14 0 0 26-79 531-8| 49-9 || 789.2 
23 0 28-39 529-:0| 45-4 || 759-0} 47-0 2 0 28-18 540-9| 54-4 || 783-6 
Jan. 6 2 O]/ 29-93 || 541-2) 52-8 | 786-7) 54-4 4 0|| 26-32 | 541-6| 55-6 || 775-1 
5 0 26-33 || 546-0] 59-7 || 786-9) 59-7 6 0 25-32 || 539-1] 52-1 || 780-8 
8 0 25-34 536-4| 51-0 || 784-9 
20 O}] 25 23-44 538-7| 49-9 || 773-5} 52-0 10° .0 24-77 535-3| 52-1 | 788-3 
23 0 25-27 538-3] 52-8 || 785-2) 55-2 
Jans /2ee0) 27-38 541-2] 53-9 || 767-2) 55-6 | Jan. 15 18 0|| 25 23-68 538-1] 42-3 | 768-4 
5 0 24-33 539-2| 54-5 || 755-5) 54-8 20 0 25-81 542-9| 47-1 || 761-5 
220 24:99 537-9| 46-8 || 766-5 
Jan. 8 20 O|| 25 24-15 533-6| 33-8 || 739-9] 34-8 | Jan. 16 0 0 28-52 540-0} 48-9 || 766-9 
22 0 24-13 533-3| 35-1 || 758-3] 36-3 Pay) 33-10 546-4| 51-8 || 766-0 
Jap. 9: 0 0 26-26 539-6| 43-3 || 763-0} 45-0 4,0 29-26 547-3| 54-9 || 775-5 
a 29:33 555-5| 53-1 || 801-1] 56-6 6 0 26-05 547-6| 53-7 || 775-6 
4 0 26-57 538-4] 50-0 || 733-3] 49-5 8 0 25-11 544-2} 54-0 || 773-6 
6/0 25-93 541-5] 49-5 || 760-3] 48-5 10 0 24-01 543-1] 54-2 || 773-0 
8 0 25-32 540-7| 50-3 || 782-9] 51-7 
10 0 23-27 || 544-1] 56-5 || 778-2) 57-9 18 0|| 25 26-22 || 539-9] 50-0 || 771-3 
20 0 24-77 545-9| 55-3 || 770-6 
20 O|| 25 24-77 531-9| 46-4 || 757-8] 46-8 22.0 25-18 538-7| 53-8 || 766-6 
22 0 25-41 532:0| 46-5 || 770-8| 47:8 | Jan. 17 0 0 26-06 537-2| 53-1 || 767-8 
Jan. 10 0 0 26-79 535-6| 48-8 || 775-8| 50-5 2 0 27-61 539-0) 54-0 || 770-5 
2 0 28-03 540-1| 50-8 || 775-0} 53-0 4 0 27-47 542-7| 58-3 || 778-2 
4 0 25-96 542-:1| 54-0 || 771-8] 56-8 6 0 26-73 || 532-2} 56-0 || 790-0 
6 0 26-01 539-3] 51-9 || 785-1] 54-0 8 0 23-90 538-1| 56-2 || 785-5 
8 0 23-39 541-4] 51-8 || 785-5] 54-4 10 O 22.74 537-9| 56-8 || 782-5 
10 0 22-72 542-0} 53-6 || 786-6] 56-5 
18 0O]| 25 23-98 540-8| 55-2 || 767-5 
20 O|| 25 23:26 538-5| 49-9 || 827-1] 52-5 20 0 24-08 541-0| 56-4 || 774-6 
22 0 23-29 535-8| 49-4 || 778-4) 52-2 22° 0 23-88 536-1| 56-9 || 769-8 
Jan. 11 0 5 25-76 534-0| 49-2 || 778-1] 515 | Jan. 18 0 7 27-49 534-0| 57-4 || 771-4 
20 26-72 545-3| 53-8 || 785-2} 56-0 Oye <0) 28-35 538-7| 57-7 || 771-4 
4 0 26-20 542-3] 52-9 || 759-3) 55-5 4 0 27-16 540-5] 57-2 || 780-4 
6 0 25-48 540-6| 52-1 || 773-2] 54-2 6 0 25-56 541-1| 57-6 || 777-4 
8 8 23-01 527-0| 52-7 || 834-4] 54-9 8 0 29-33 537-5| 57-7 || 774-8] oI 
10 0 22-06 531-4} 52-6 || 811-0] 55-7 10 0 27-36 533-5| 56-8 || 781-8 7 
Breese Torsion removed, circle reading,—Dec. 204 1842, 168°; Jan, 24 21h, 194° ;* 6464, 224° ;»* 94 21h, 249°; 134 2h, 1° 
BIFILaR. k=0:0001248. BALANCE. k=0:000015 approximately. 
roduced in taking ont the magnet in order to make the Dip observation ; it W 
* Jan. 2d 21h, It is probable that this change in the plane of detorsion was 3 viola k PS: t, * 
een broken in taking out the magnet, and @ 
found ultimately tht two fibres of the suspension thread had been broken. it is conceived that one fibre had 
other on replacing it, from the great change of torsion found on January 6. 
4 Jan. 134 2h 39m, After an observation for the value of = the broken fibres mentioned aboye were withdrawn, and the torsion eliminated. 
Jan. 174 0b, The Declination observation was 20m late on account of the torsion being removed from the suspension thread. 
