Daily Obseevations of Magnetometers, September 15 — October 15. 1841, 



Gottingen 



Mean Time of 



Declination 



Observation. 



d, b. m. 



Sept. 15 20 



23 



Sept. 16 2 



5 



20 



23 



Sept. 17 2 



5 



20 



23 



Sept. 18 2 



5 



20 



23 



Sept. 19 2 



5 



20 



23 



Sept. 20 2 



5 



20 



23 



Sept. 21 2 



5 



20 



23 



Sept. 22 2 



5 



20 



23 



Sept. 23 2 



5 



20 



23 



Sept. 24 2 



5 



20 



23 



Sept. 25 2 



5 



Sept. 26 20 



23 



Sept. 27 2 



5 



Declina- 

 tion. 



132-88 

 13513 

 139-40 

 134-25 



133-17 

 133-95 

 138-48 

 133-77 



128-89 

 133-90 

 140-10 

 135-82 



133-22 

 140-93 

 140-36 



129-47 

 135-20 

 142-27 

 136-52 



131-88 

 135-19 

 140-40 

 136-83 



132-11 

 135-68 

 140-13 

 135-20 



132-02 

 137-28 

 141-29 

 137-88 



136-20 

 140-75 

 144-42 



133-77 

 144-93 

 15314 

 130-45 



142-08 

 138-40 

 139-92 

 132-20 



BiFILAU. 



Balance. 



Cor- 

 rected. 



Thermo-|| Cor- 

 meter. || rected. 



Sc. Div. 

 524-5 

 518-6 

 527-8 

 531-9 



518-9 

 517-5 

 533-8 

 541-7 



522-3 

 510-6 

 528-4 

 526-7 



510-3 

 530-3 

 548-7 



526-9 

 516-6 

 526-7 

 536-2 



522-0 

 513-5 

 525-0 

 529-7 



5220 

 517-3 

 526-7 

 536-0 



532-9 

 5150 

 529-0 

 540-5 



525-1 

 5311 

 546-1 



516-8 

 497-6 

 664-3 

 860-2 



508-7 

 495-6 

 526-0 

 547-1 



61-0 

 62-5 

 64-2 

 66-5 



55-1 

 56-8 

 63-4 

 66-5 



54-6 



54-8 

 56-9 

 58-2 



56-6 

 61-6 

 65-8 



60-2 

 60-5 

 60-4 

 60-6 



530 

 54-4 

 58-8 

 59-6 



52-4 

 54-5 

 560 

 56-4 



62-4 

 60-6 

 60-8 

 63-5 



58-0 



58-2 

 60-7 



55-4 

 58-0 

 620 

 65-0 



51-6 

 54-0 

 57-7 

 59-2 



Mic, Div. 



660-0 

 660-9 

 655-3 

 670-2 



644-8 

 677-7 

 653-7 

 666-1 



677-4 

 679-4 

 666-7 

 692-3 



Thermo- 

 meter. 



61-2 

 62-4 

 63-3 

 65-3 



55-7 

 56-3 

 61-4 

 64-5 



55-1 

 55-2 

 56-2 

 57-2 



Gottingen 



Mean Time of 



Declination 



Observation. 



665-9 



56-2 



645-8 



59-9 



709-1 



64-1 



675-6 



59-9 



670-1 



60-2 



665-7 



60-2 



693-4 



60-2 



704-7 



52-9 



683-7 



53-8 



665-9 



57-4 



675-7 



58-3 



687-8 



521 



671-7 



53-8 



648-4 



55-3 



683-1 



55-7 



685-3 



62-3 



646-2 



60-7 



650-2 



61-7 



649-9 



63-0 



647-8 



57-7 



642-1 



57-8 



665-1 



59-6 



575-5 



55-4 



625-6 



57-3 



916-3 



60-2 



909-7 



63-2 



645-5 



51-6 



806-8 



5-13 



819-6 



560 



867-6 



57-8 



d. h. m. 



Sept. 27 20 



23 



Sept. 28 2 



5 



20 



23 



Sept. 29 2 



5 



20 



23 



Sept. 30 2 



5 



Oct. 6 20 



23 



Oct. 7 2 



5 



20 



23 



Oct. 8 2 



5 



Oct. 



Oct. 

 Oct. 



Oct. 



Oct. 



Oct. 



Oct. 



Declina- 

 tion. 



20 



23 



9 2 



5 



10 20 



23 



112 



5 



20 



23 



12 2 

 5 



20 



23 



13 2 

 5 



20 



23 



14 2 

 5 



20 



23 



15 2 

 5 



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. 



Cor- 

 rected. 



Thermo- 

 meter. 



Sc. 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 



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 

 5360 

 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 



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 

 56-4 

 55-6 



49-4 

 52-1 

 55-5 

 56-5 



52-6 

 55-9 

 58-5 

 59-2 



48-6 

 47-6 

 52-9 

 56-8 



47-6 

 50-3 

 51-8 

 50-5 



49-8 

 54-4 

 56-8 

 57-3 



51-4 

 53-9 

 56-0 

 55-4 



Balance. 



Cor- 

 rected. 



Thermo- 

 meter. 



Mic. Div. 

 617-3 

 633-0 

 631-6 

 659-0 



575-5 

 680-4 

 635-3 

 754-8 



602-5 

 639-2 

 6270 

 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 



Bifilar. Sept. 7* SQi"— Sept. 30<i A;=:0-0001464 2=0-000304=2-08 Scale divisions. 



Oct. 6d —Oct. IQd 20'^ /fc=0-0001303 5=0-000304=2-34 Scale divisions. 

 Balance. Sept. 5<i —Sept. 30<i >k=0-0000127 g=0-000073=5-74 Micrometer divisions. 



Oct. 6* —Nov. 30'! A=0-0000118 3=0000073=6-20 Micrometer divisions. 



Sept. 181—191. Sunday. 



Sept. 251 2''. Bifilar reading approximate. Scale out of the field. 



Sept. 251 4h_ Observations made during an extraordinary disturbance, at vrhich time the torsion circle of the Bifilar vras fre- 

 quently turned, but left ultimately at its usual position. 



Oct 21. Balance magnet reversed, for the purpose of determining the deviation of the bisection crosses from the magnetic axis. 



Oct. 11 — 61. Wires of Bifilar Magnetometer found to have a tvrist. Wires removed, and, after several trials, new ones inserted 

 which were free of twist. Adjustment completed. Torsion circle left reading 290° 0'. 



