Daily Observations of Magnetometers, August 17 — September 15. 1841. 



Gottingen 



Mean Time of 



Declination 



Observation. 



d. h. m. 



Aug. 17 20 



23 



Aug. 18 2 



5 



20 



23 



Aug. 19 2 



5 



20 



23 



Aug. 20 2 



5 



20 



23 



Aug. 21 2 



5 



Aug. 22 20 



23 



Aug. 23 2 



5 



20 



23 



Aug. 24 2 



5 



20 



23 



Aug. 25 2 



5 



20 



23 



Aug. 26 2 



5 



20 



23 



Aug. 27 2 



5 



20 



23 



Aug. 28 2 



5 



Aug. 31 20 



23 



Sept. 1 2 



5 



Declina- 

 tion. 



131-30 

 137-21 

 141-73 

 137-75 



133-73 

 135-57 



138-05 



127-97 

 135-92 

 142-05 

 138-23 



130-87 

 13700 

 145-92 

 139-76 



138-75 

 13515 

 143-25 

 143-57 



150-30 

 137-21 

 140-56 

 136-90 



132-27 

 136-00 

 141-47 

 136-88 



130-49 

 137-57 

 145-39 

 143-11 



144-62 

 138-93 

 152-00 

 139-65 



137-18 

 141-78 

 147-63 

 139-72 



143-35 

 143-24 

 142-08 

 134-35 



BiFILAR. 



Cor- 

 rected. 



Sc. Div. 



528-7 

 528-0 

 551-5 

 553-3 



534-8 

 530-7 



552-7 



545-0 

 541-5 

 557-1 

 552-8 



540-2 

 533-8 

 538-3 

 549-7 



523-3 

 536-7 

 541-5 

 543-2 



504-5 

 522-0 

 542-5 

 550-5 



545-8 

 544-6 

 557-9 

 555-3 



546-4 

 543-1 

 552-8 

 570-2 



535-8 

 548-3 

 551-2 

 559-3 



545-4 

 523-9 

 554-5 

 563-4 



508-6 

 535-5 

 564-7 

 559-1 



Thermo 

 meter. 



53-6 

 56-4 

 60-8 

 65-3 



57-4 

 59-6 



67-8 



62-7 

 65-5 

 69-1 

 70-2 



62-0 

 60-4 

 60-4 

 59-9 



56-8 

 58-0 

 61-6 

 63-7 



53-6 



54-5 

 57-1 

 60-1 



56-6 

 59-3 

 63-6 

 65-7 



61-5 

 64-1 

 65-5 

 66-5 



62-1 

 62-3 

 65-4 

 67-5 



63-0 

 64-5 

 67-6 

 69-8 



50-1 

 53-1 

 57-6 



58-8 



Balance. 



Cor- 

 rected. 



Mic. Div 



781-5 

 724-4 

 694-2 

 7121 



750-4 

 731-8 



695-3 



705-6 

 683-2 

 634-5 

 650-7 



714-3 

 691-5 

 703-8 

 722-3 



683-2 

 675-2 

 676-3 

 718-5 



671-6 

 709-6 

 714-1 

 695-3 



718-8 

 700-5 

 656-8 

 669-3 



691-1 

 658-4 

 663-6 

 710-3 



605-6 

 676-0 

 696-6 

 734-5 



672-4 



718-3 

 712-3 

 690-6 



Thermo 

 meter. 



54-7 

 56-3 

 59-7 

 63-1 



57-5 

 59-2 



65-7 



62-7 

 64-7 

 68-1 

 69-5 



62-7 

 61-0 

 60-7 

 60-1 



57-3 

 58-2 

 61-7 

 62-7 



54-1 

 54-9 

 56-9 

 59-7 



56-7 

 58-7 

 62-2 

 64-2 



61-2 

 63-3 

 64-6 

 65-8 



62-2 

 62-2 

 64-7 

 66-3 



63-8 

 65-1 

 67-4 

 67-8 



Gottingen 



Mean Time of 



Declination 



Observation. 



Sept. 

 Sept. 



Sept. 



Sept. 



Sept. 

 Sept. 



d. h. m. 



1 20 

 23 



2 2 

 5 



20 



23 



3 2 

 5 



20 



23 



4 2 

 5 



Sept. 



5 20 

 23 



6 2 

 5 



20 



23 



Sept. 7 2 



5 



20 



23 



Sept. 8 2 



5 



20 



23 



9 2 



5 



20 



23 



Sept. 10 2 



5 



20 



23 



Sept. 112 



5 



Sept. 12 20 



23 



Sept. 13 2 



5 



Sept. 14 20 



23 



Sept. 15 2 



5 



Declina- 

 tion. 



133-57 

 139-35 

 141-65 

 136-00 



132-00 



129-95 

 135-35 

 142-50 

 135-48 



124-23 

 126-52 

 133-37 

 130-49 



123-35 

 128-40 

 133-07 

 131-27 



124-79 

 128-69 

 133-53 

 129-10 



122-64 

 127-14 

 134-17 

 130-23 



123-77 

 128-17 

 134-59 

 131-03 



127-07 

 128-27 

 134-55 



127-27 

 14415 

 139-90 

 129-49 



131-45 

 135-28 

 135-43 

 132-13 



BiFILAK. 



Cor- 

 rected. 



Sc. Div. 



543-9 

 541-1 

 559-6 

 557-9 



542-7 



548-9 

 534-5 

 548-5 

 551-6 



541-8 

 539-7 

 550-1 

 560-7 



544-5 

 545-0 

 551-0 

 565-0 



506-2 

 504-6 

 514-3 

 517-5 



503-6 

 499-9 

 511-9 

 520-1 



516-6 

 514-7 

 522-4 

 529-6 



514-9 

 517-7 

 525-1 



531-3 

 509-5 

 541-0 

 539-3 



520-4 

 519-5 

 529-5 

 532-6 



Thermo- 

 meter. 



54-6 

 57-1 

 60-6 

 61-7 



54-2 



52-7 

 52-3 

 51-4 

 50-8 



47-3 

 48-6 

 52-6 

 55-6 



47-1 

 49-4 

 52-5 

 54-6 



51-1 

 52-3 

 53-6 

 54-5 



46-9 

 48-7 

 52-9 

 55-7 



58-6 

 60-1 

 62-1 

 62-6 



59-0 

 59-9 

 62-1 



61-6 

 63-1 

 69-3 

 73-6 



61-8 

 64-0 

 68-3 

 69-5 



Balance. 



Cor- 

 rected. 



Mic. Div 



713-7 

 709-3 

 699-0 

 698-5 



711-0 

 699-9 

 688-0 

 698-0 



695-8 

 699-8 

 683-0 

 693-6 



721-8 

 722-4 

 695-7 

 688-9 



681-3 

 672-9 

 655-8 

 660-4 



656-8 

 665-8 

 657-3 



590-0 

 644-2 

 655-9 



727-8 



675-8 

 674-8 

 652-8 

 657-6 



Thermo- 

 meter. 



47-9 

 48-6 

 51-6 

 54-1 



47-6 

 49-0 

 51-3 

 53-1 



51-6 

 52-1 

 53-1 

 53-7 



47-4 

 49-0 

 51-9 

 54-3 



58-0 

 59-5 

 61-2 

 62-1 



58-9 

 59-5 

 61-4 



62-2 

 63-2 

 68-4 

 71-6 



62-0 

 63-1 

 67-0 

 68-1 



Bifilar. Aug. 4'! —Sept. 7^ 5^ A;=0-0001522 g=0-000304=2'00 Scale divisions. 



Sept. 7* 20i»— Sept. SOd /:=0-0001464 5=0-000304=2-08 Scale divisions. 



Balance. Aug. 4'i — Aug. 28'i ^=0-0000143 5=0-000073=5-10 Micrometer divisions. 



Sept. Sd —Sept. 30d /;=0-0000127 3=0-000073=5-74 Micrometer divisions. 



Aug. 20* 22'>. Extra observations made during a thunder storm. 



Aug. 30"i. Mr Simms adjusted the agate planes of the Balance Magnetometer, making them parallel to each other; he also 

 inserted spider's threads in lieu of the silver wire for the bisection crosses, and adjusted the Micrometers. 



Sept. 3<i. Remaining observations for the day not made, on account of alterations being made in the Balance Magnetometer. 



Sept. yd 7^. Torsion circle of Bifilar Magnetometer moved from 114° 50' to 114° 0', in order to bring the readings nearer the 

 middle of the scale. 



