DAILY OBSERVATIONS OF MAGNETOMETERS, JUNE 22—JuLy 18. 1842. 13 
Géttingen BIFILAR. BALANCE, Gottingen BIFILAR. BALANCE. 
Mean Time of DECLINA- Mean Time of DECLINA- 
Declination TION. Cor- |Thermo-|| Cor- |Thermo Declination TION. Cor- |Thermo-|| Cor-  /Thermo- 
Observation. wore hea rected. | meter. || rected. | meter. Observation. rected. | meter. || rected. | meter. 
-— —| 
dh. 4 Se. Div. P Mic. Div. a a oh. 4 Sc. Div. ° Mic. Div. “i 
June 22 20 123-02 || 517-3] 58-6 || 781-6| 59-2} July 5 20 128-90 || 517-8] 54:8 || 795-4| 55-1 
23 127-81 || 528-4] 60-9 || 792-1) 60-7 23 126-33 || 529-8] 57-3 || 824-9] 56-6 
June 23 2 133-02 || 548-4| 64-7 || 796-0) 65-0 | July 6 2 134-13 || 538-1] 60-4 |) 808-1} 59-3 
5 129-73 || 549-2} 67-5 || 806-5] 66-4 5 131-38 || 542-6| 63-7 || 805-5| 62-1 
20 124-04 || 515-3| 59-9 || 823-8] 60-1 20 125-79 | 524-1| 54-2 || 828-5] 54-6 
23 126-43 || 509-3} 60-9 || 831-9] 60-7 23 126-25 || 520-6| 55-4 || 825-9] 55-3 
June 24 2 134-30 || 529-6| 63-4 || 846-2) 62-7 | July 7 2 133-05 || 527-5| 57-9 | 824-9) 57-1 
5 131-70 || 545-8| 65-2 || 827-6} 64-2 5 131-62 || 540-8] 58-6 || 831-7] 57-9 
20 122-27 || 529-0} 58-2 |) 818-1] 58-3 20 124-88 || 526-0| 54-3 || 845-5| 54-3 
23 129-23 || 517-6] 59-1 || 836-7| 58-0 23 126-35 || 520-1] 56-2 || 801-6| 55-7 
June 25 2 129-18 || 542-1| 60-4 || 812-9} 60-0 |July 8 2 134-33 || 531-4| 59-9 || 816-2) 58-8 
5 131-10 || 545-3| 60-4 || 818-6) 60-1 5 132-95 || 543-1| 61-4 || 815-5| 60-2 
June 26 20 123-30 || 528-8} 58-2 || 820-6} 57-7 20 130-15 || 532-0) 56-4 || 697-8) 56-4 
23 127-63 || 526-6] 59-9 || 806-4] 59-2 23 130-05 || 525-7| 59-1 || 795-3} 58-3 
June 27 2 134-79 || 543-0] 63-1 || 790-5| 61-9 ]July 9 2 135-92 || 535-6| 62-7 || 829-7} 61-4 
5 132-48 || 549-8] 65-7 || 798-6} 64-2 5 134-33 || 565-6] 65-1 || 861-7| 63-7 
20 124-13 || 531-4| 56-4 || 833-5| 56-7 | July 10 20 127-54 || 520-8| 56-3 || 828.4| 56-3 
23 126-94 |} 521-7| 57-3 || 806-7| 57-1 23 129-78 || 505-5| 56-5 || 829-2| 56-4 
June 28 2 133-93 || 532-8] 59-9 || 799-5| 59-2 | July 11 2 136-57 || 531-9| 59-3 || 827-6] 58-5 
5 132-73 || 550-7) 62-5 || 815-9] 61-2 5) 131-32 || 545-2] 62-4 || 834-4] 61-2 
20 124-42 || 537-7) 58-4 || 821-1) 58.3 20 124-04 || 532-3) 59-0 || 828-6] 59-1 
128-74 || 530-7| 59-5 || 812-8) 59-2 
' 126-90 || 524-2|} 60-6 || 818-1] 60-1 
133-05 || 546-7| 61-4 || 791-7| 60-5 | July 12 2 
June 29 2 135-53 || 541-0} 64-6 | 804-7| 63-3 
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5 132-78 || 550-4| 63-1 || 787-7| 62-2 5 131-83 | 553-6| 66-8 || 815-5| 65-3 
20 121-98 || 534-8| 57-9 | 807-8| 56-9 20 123-80 || 534-7] 60-3 || 820-2| 60-2 
23 128-85 || 527-3| 59-6 || 790-0| 59-1 23 126-48 || 523-4) 62-5 || 829-1| 61-6 
June 30 2 133-48 || 540-1| 64-2 | 772.6| 62-7 |July 13 2 131-78 || 535-6| 65-1 || 790-8| 64-0 
5 133-27 || 546-4| 66-4 | 785.0| 65-1 5 131-60 | 545-4! 66-3 | 810-6| 65-3 
20 123-75 || 528-1] 59-8 || 786-1| 59-9 20 122-45 | 526-4| 58-3 | 833-5| 58-5 
23 131-96 || 523-5| 62-5 || 790-8| 61-8 23 129-41 | 521-0| 59-3 | 830-4| 59-2 
July 1 2 136-52 || 543-0| 66-1 | 757-7| 65-0 | July 14 2 131-00 | 528-3] 61-4 | 805-5| 60-6 
5 133-50 || 549-8| 68.4 | 805-7| 66-9 5 129-80 | 539-6| 63-5 | 813.4| 62-3 
20 126-39 || 479-9] 58-4 | 618-5| 58-7 * 5d 125-23 | 535-5| 56-8 | 818-1| 56-7 
23 130-65 || 502-1| 58-4 ||.731-7| 58-5 23 128-83 || 530-6| 59-1 || 796-5| 58-4 
July 2 2 138-01 || 542-4| 60-0 || 809-6] 59-9 |July 15 2 133-24 | 540-4| 64-4 || 788-0] 62-8 
5 137-41 || 559-0| 61-6 || 799.2| 61-2 5 130-72 || 551-1| 68-7 | 789-2| 66-7 
July 3 20 132-20 || 443-6| 56-4 | 522-6| 56-4 20 122.65 | 524-8} 60-2 || 801-6] 60-4 
23 133-27 || 502-6] 58-2 || 742-1| 57-9 23 128-20 || 527-2| 63-3 || 786-3| 62-5 
July 4 2 123-90 || 625-6] 60-5 |1062-8| 59-9 | July 16 2 133-00 | 545-2] 68-6 || 780-0| 67-1 
5 129-49 || 573-9| 62-5 || 959-3| 61-7 5 129-49 | 548-0| 71-6 | 795-2| 69-7 
20 123-20 || 512-2| 59-0 | 831.0] 59-2 | July 17 20 122-80 | 532-8| 59-9 | 825.2] 59-9 
23 135-65 || 501-6] 61-1 || 848-9| 60-5 23 128-77 | 525-0| 61-7 | 805-0| 61-1 
July 5 2 134-86 || 531-5] 62-6 || 812-6| 61-9 | July 18 2 135-08 || 536-5| 63-9 || 784-7| 62-9 
5 132-27 || 530-4] 63.4 || 826-4| 62-7 5 131-78 | 542-3| 65-8 | 796-7! 64-5 
BIFinar. k=0:0001248 g=0-000304=2-44 Scale divisions. 
Baxance. April 174—Oct. 84 k=0-0000130 g=0-000073=5-60 Micrometer divisions. 
DECLINATION. Torsion removed. Circle reading 40°. June 244 74, 57°. June 264 204, 230°. 
See note below.) June 
274 20%, 235°. July 147%, 312°. July 44 20h, 312°. July 84 8, 342°. July 154 8h, 4, 
J une 264 204. A fibre of the Declinometer suspension thread found broken ; removed after the observation ; when the torsion 
was tried, its effect was found equivalent to + 7-79. 'The reading at 20% was therefore corrected by —7"79. 
July 14—44, Extra observations. 
July 9455, Extra observations. 
July 14254. Observation 5™ late. Instruments quite stationary. 
MAG, OBS. VOL. I. ba 
