DAILY OBSERVATIONS OF MAGNETOMETERS, SEPTEMBER 15—OcToBER 15. 1841. 
Gottingen 
Mean Time of 
Declination 
Observation. 
dh. 
Sept. 27 20 
23 
Sept. 28 2 
5 
Sept. 29 2 
Oct. 8 2 
Octs 19.42 
Oct. 
Oct. 
10 
Oct. 12 2 
Oct. 
13 2 
Oct. 
14.2 
Oct. 15\.-2 
cooo coosc cooseoe cooeoesc cosoeoo sooo scesso scssoso eoscoseoe cooo ooooB 
DECLINA- 
TION. 
135-52 
133-85 
138-55 
133-04 
136-32 
135-30 
137-47 
133-85 
127-65 
132-95 
137-48 
128-80 
128-25 
132-50 
135-46 
136-83 
127-67 
133-40 
137-25 
121-70 
127-57 
127-28 
131-51 
128-93 
131-24 
128-34 
131-68 
127-81 
124-62 
125-15 
130-58 
125-81 
121-67 
125-13 
129-95 
125-39 
125-70 
125-03 
129-85 
125-40 
126-74 
130-56 
131-20 
128-82 
BIFILAR. 
iThermo- 
meter. 
Cor- 
rected. 
Se. Div. 
528-8 
523-0 
532-2 
537-7 
532-4 
506-5 
536-3 
538-9 
527-8 
524-9 
540-3 
545-4 
55:5 
60-9 
64-4 
63-7 
56-0 
56-4 
61-1 
63-1 
56-1 
57:1 
63-2 
63-7 
50-6 
51-1 
56-1 
56-6 
51-5 
53-6 
505-2 
504.2 
524-6 
531-2 
516-9 
511-8 
517-5 
555-5 
513-5 
515-4 
533-4 
549.7 
524-1 
533-1 
536-0 
544.7 
504-9 
520-5 
541-4 
552.2 
537-0 
533-5 
542-3 
542.4 
537-4 
542.7 
541-8 
549-1 
534-0 
535-9 
536-8 
558-8 
BALANCE. 
Cor- {Thermo 
Mie. Div. 
617-3 
633-0 
631-6 
659-0 
575-5 
680-4 
635-3 
754-8 
55:2 
59-2 
602-5 
639-2 
627-0 
681-2 
653-7 
642-3 
644-6 
666-6 
625-2 
650-3 
643-5 
735:3 
661-2 
666-7 
649-3 
706-7 
665-6 
662-5 
638-2 
638-7 
651-1 
661-0 
665-9 
662-6 
656-3 
654-7 
647-6 
662-4 
641-1 
625-9 
630-8 
640-7 
607-8 
645-7 
646-3 
656-8 
rected. | meter. 
k=0°0001464 g=0:000304=2:08 Scale divisions. 
194 20% k=0:0001303 g=0-000304=2:34 Scale divisions. 
k=0:0000127 g=0:000073=5'74 Micrometer divisions. 
k=0°0000118 g=0:000073=6-20 Micrometer divisions. 
4 
Gottingen BIFILAR. BALANCE. 
Mean Time of DECLINA- 
Declination TION. Cor- |Thermo-| Cor- |Thermo- 
Observation. rected. | meter. || rected. | meter. 
a 
am. iy Sc. Div. Mice, Div. = 
Sept. 15 20 0 132-88 || 524-5] 61-0 |} 660-0] 61-2 
23 0|| 135-13 || 518-6| 62-5 || 660-9] 62-4 
Sept.16 2 0 139-40 || 527-8| 64-2 || 655-3] 63-3 
5 O|| 134-25 | 531-9| 66-5 || 670-2] 65-3 
20 O|| 133-17 || 518-9} 55-1 || 644-8 55-7 
23 0|| 133-95 | 517-5| 56-8 || 677-7) 56-3 
Sept.17 2 0 138-48 || 533-8] 63-4 || 653-7] 61-4 
5 0|| 133-77 || 541-7| 66-5 || 666-1} 64-5 
20 O|| 128-89 | 522-3] 54-6 || 677-4] 55-1 
23 0|| 133-90 || 510-6] 54-8 || 679-4] 55-2 
Sept.18 2 0 140-10 || 528-4] 56-9 || 666-7} 56-2 
5 O|] 135-82 || 526-7] 58-2 || 692-3} 57-2 
Pil) MGW || rosedece ||| abeneced|) wasanae||I|sopscas [espace 
23 0|| 133-22 || 510-3] 56-6 | 665-9] 56-2 
Sept.19 2 0O|) 140-93 530-3] 61-6 || 645-8| 59-9 
5 O|| 140-36 || 548-7] 65-8 || 709-1] 64-1 
20 O|| 129-47 || 526-9] 60-2 | 675-6| 59-9 
23 O}] 135-20 || 516-6| 60-5 || 670-1| 60-2 
Sept. 20 2 0O}]| 142-27 || 526-7 60-4 || 665-7| 60-2 
5 O|| 136-52 |) 536-2] 60-6 || 693-4| 60-2 
20 O]] 131-88 || 522-0] 53-0 || 704-7} 52-9 
23 O|] 135-19 || 513-5| 54-4 | 683-7| 53-8 
Sept. 21 2 0|| 140-40 | 525-0] 58-8 | 665-9 57-4 
5 0O|| 136-83 || 529-7] 59-6 || 675-7| 58-3 
20 O|| 132-11 || 522-0] 52-4 |) 687-8] 52-1 
23 O|| 135-68 || 517-3] 54-5 || 671-7] 53-8 
Sept. 22 2 0|| 140-13 || 526-7] 56-0 || 648-4 55-3 
5 0O]| 135-20 || 536-0] 56-4 || 683-1] 55-7 
20 O]| 132-02 || 532-9] 62-4 || 685-3] 62-3 
23 0O|| 137-28 || 515-0} 60-6 || 646-2] 60-7 
Sept. 23 2 0|| 141-29 || 529-0] 60-8 || 650-2) 61-7 
5 O]| 137-88 || 540-5] 63-5 || 649-9} 63-0 
PL). (lf eeasdocss 4) cence || S854) | Peed ol leaocsce 
23 O|| 136-20 || 525-1] 58-0 || 647-8| 57-7 
Sept. 24 2 0O|| 140-75 || 531-1] 58-2 || 642-1] 57-8 
5 O}] 144-42 || 546-1] 60-7 || 665-1] 59-6 
20 O|| 133-77 || 516-8] 55-4 || 575-5| 55-4 
23 O|| 144-93 | 497-6| 58-0 | 625-6] 57-3 
Sept. 25 2 O]| 153-14 | 664-3] 62-0 || 916-3] 60-2 
5 0O|| 130-45 | 860-2} 65-0 || 909-7| 63-2 
Sept. 26 20 0|| 142.08 || 508-7] 51-6 || 645-5] 51-6 
23 Oj] 138-40 | 495-6| 54-0 || 806-8} 5-13 
Sept. 27 2 0O|| 139-92 | 526-0] 57-7 || 819-6] 56-0 
5 O}| 132-20 | 547-1| 59-2 | 867-6| 57-8 
BIFILAR. Sept. 74 20%—Sept. 30¢ 
» Oct. 64 —Oct. 
BALANcE. Sept, 5¢ —Sept. 30¢ 
”» Oct. 64 —Nov. 304 
Sept. 18¢—194, Sunday. 
Sept. 254 2h, 
Oct 24, 
Oct. 14—64, 
Balance ma 
Bifilar reading approximate. 
Scale out of the field. 
Sept. 254 4», Observations made during an extraordinary disturbance, at which time the torsion circle of the Bifilar was fre- 
quently turned, but left ultimately at its usual position. 
which were free of twist. Adjustment completed. Torsion circle left reading 290° 0’. 
magnet reversed, for the purpose of determining the deviation of the bisection crosses from the magnetic axis. 
Wires of Bifilar Magnetometer found to have a twist. Wires removed, and, after several trials, new ones inserted 
