12 DAILy OBSERVATIONS OF MAGNETOMETERS, May 27—JuLy 22. 1842. 
sOtti BiIFiILanr. BALANCE, Gottingen BIFILAR. BALANCE. 
Me enc DECLINA- Mean Time of || Drecu1na- || — —— 
Declination TION. Cor- |Thermo-|| Cor- |Thermo- Declination TION. Cor- |Thermo-|| Cor- 
Observation. rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. 
, i ° Mie. Div. a m. e Se. Diy. a Mic. Diy. 
May 2 20 0 | 126-62 528-3 54-8 || 848-4} 56-2 0 || 125-95 || 523-8] 57-9 || 846-1 
y 23 0|| 130-45 || 523-8) 58-1 || 815-0) 57-8 0|| 130-53 |) 526-2) 60-3 || 811-8 
May 28 2 0) 136-15 || 539-2 61-3 || 793-8} 60-5 0} 140-63 |) 553-1 63-1 761-8 
5 0|| 131-92 | 543-3| 63-0 || 811-5| 62-3 0) 138-01 || 544-7] 64-0 || 786-4 
May 29 20 0} 125-88 | 529-2) 55-8 || 846-4) 55-6 0; 125-23 529-4 58-5 || 827-6 
23 0|| 129-30 | 527-7| 57-4 || 824-7] 56-9 0 | 129-49 || 518-8] 60-4 || 813-0 
May 30 2 0} 130-32 | 544-3) 60-4 800-4) 59-4 0 | 136-60 || 538-5] 64-5 || 801-6 
5 O| 128-43 || 545-1| 61-4 || 819-9] 60-3 0 135-45 || 551-5] 69-3 || 802-5 
20 0} 123-13 || 529-4) 55-4 || 841-0) 55-3 0}| 127-54 || 533-6| 58-6 || 785.0 
23 0] 125-68 || 522-7) 57-1 || 808-8} 56-6 0) 130-05 || 524-6} 60-9 || 820.2 
May 31 2 0|| 130-52 | 542-1] 61-0 || 793-8] 59-8 0} 139-20 || 538-6] 68-0 || 795-1 
. 5 0| 129-52 | 547-9| 64-1 | 814-7| 62-6 0} 139-12 | 556-4] 73-8 || 898.2 
20 0|| 123-60 | 531-7) 54-2 || 827-1] 54-4 0 | 132-37 || 522-1) 65-2 || 772.9 
23 0|| 127-77 || 530-4} 55-9 || 826-4) 55-7 0}; 131-05 || 509-2) 66-0 || 806.7 
June 1 2 O|| 132-93 | 540-3) 57-5 || 788-6) 56-8 0] 139-45 || 532-6} 69-9 |) 897.1 
5 0] 129-78 || 549-5! 58-5 || 826-4) 57-9 0|| 138-49 || 563-9] 72-3 || 848.1 
20 0} 125-15 | 532-9) 54.1 || 821-8| 54-3 0|| 129-52 || 525-5] 61-7 || 792.8 
23 0} 127-77 || 531-5] 55-4 |) 791-5| 55-1 0 129-65 || 520-2| 62-5 || 807-3 
June 2 2 0| 135-48 | 549-0) 59-0 || 796-6| 58-2 0} 133-35 || 537-2] 64-5 || 812.6 
5 0! 132-53 || 547-5| 62-4 || 832-6] 60-9 0]) 134-05 || 550-3} 68-7 || 803-0 
20 0} 119-92 | 529-2) 54-8 |) 854-6] 55-2 0] 125-53 || 525-0] 61-9 || 825-1 
23 0] 125-08 || 531-8) 56-9 || 840-4] 56-5 0|) 130-42 || 526-8] 63-6 || 827.9 
June 3 2 0] 130-25 || 535-8| 63-6 || 804-0] 61-9 0] 134-93 || 534-8] 64-6 || 813-6 
5 0] 131-92 | 554-9] 68-5 || 824-4] 66-2 0} 133-13 || 542-9) 64-7 | 831-8 
20 0} 123-93 || 526-8] 60-4 || 834-1] 60-5 0|| 124-97 |} 526-1] 55-7 || 843-1 
23 0} 129-56 || 533-6] 63-0 || 797-2| 62-4 0} 133-73 || 520-1] 56-9 || 895.1 
June 4 2 0] 134-44 || 549-4] 68-4 | 772-5] 66-7 0) 136-88 || 540-3 | 59-2 |) 807-5 
5 0] 139-55 | 553-8] 70-5 || 771-9] 68-9 0} 133-91 |} 540-5} 61-3 || 827-0 
June 5 20 0} 123-33 | 522-3] 59.2 || 834-7| 59-2 0) 126-52 || 528-5 835-3 
23 0] 130-92 | 516-1] 61-3 || 819-4| 60-6 0] 130-29 || 528-4} 56-3 || 894.3 
June 6 2 O|| 133-27 | 536-9] 65-3 || 811-0| 64-0 0} 134-38 || 538-3] 59-9 || 797-5 
5 0} 128-81 | 543-1] 67-6 || 829-6] 66-3 0) 133-80 || 547-8 805-9 
DOL Ollinsencee en 517-5! 58-9 || 808-9] 59.2 0}) 127-18 || 530-3 849-5 
23 O|| 130-82 | 513-5! 60-4 || 835-7} 60-1 0} 129-73 || 529-5 : 839-4 
June 7 2 0] 137-68 | 531-2| 65-5 || 813-2] 64-0 0} 134-33 || 542-0 ‘ 830-5 
5 0 | 129-62 | 548-8) 69-7 813-8) 67-8 0) 132-97 || 559-8] 63- 819-7 
PAW YON TRE Tb al|l Abana lMsoceae 819-3| 60-7 0|| 126-15 || 527-8 831-3 
23 0} 127-00 || 526-2} 63-4 || 830-0} 62-9 0} 128-10 || 524-4 : 824-0 
June 8 2 0] 134-83 | 535-4] 68-1 || 815-9| 66-8 0} 134-15 || 536-3 s 784-8 
5 0} 132-44 | 551-9) 70-7 || 804-4) 69-1 0} 130-18 || 544-5 796-3 
20 0} 123-00 | 521-5) 59-4 || 817-4| 59-9 0}| 123-73 || 537-6 826-8 
23 0} 128-65 | 523-0) 60-4 || 808-6] 60-4 0|| 130-05 || 523-6 p 804-6 
June 9 2 O]] 138-05 || 526-4] 64-3 | 812-1] 63-3 |June 22 2 O] 135-35 || 538-8 ‘ 785:8 
5 0) 136-99 | 545-8] 66-5 || 834-2] 65-3 0] 131-55 || 553-5 795-0 
Brrinar. k=—0-0001248 g=0-:000304—2-44 Scale divisions. 
BALANCE. April 174—Oct. 84 k=0-0000130 g=0-000073=5'60 Micrometer divisions. 
DECLINATION. ‘Torsion removed, Circle reading. June 34 6, 215°. June 64 204, 329°, (See note below.) June 184 61, 
338°, June 204 215, 40°, 
May 302 20. The Declinometer magnet having been removed, and the brass bar inserted, in order to make the Dip observa- 
tion, the brass bar was allowed to move freely, to find if any torsion existed, when it went round about 400°. See Introduction 
for remarks on this torsion, and the correction of observations. 
June 64 20, Found two fibres of the Declinometer suspension thread broken, which had induced a considerable quantity of 
torsion. The fibres were cut off, and the torsion eliminated. 
June 184 6b ; 214 8h ; 264 23, Observations made to determine the value + for Declinometer thread. 
