Hourly Observations of Magnetometers, January 26 — February 1, 1844. 



Gbttingen 

 Mean Time 

 of Declina- 

 tion Obs. 



d. h. m« 



26 21 



22 



23 



27 



1 



2 

 3 

 4 

 5 

 6 

 7 









 

 

 



8 



9 



10 Of 



11 5f 



12 



28 13 Of 



14 



15 



16 Of 



17 of 



18 



19 



20 



21 



22 



23 



29 

 1 

 2 

 3 

 4 

 5 

 6 

 7 



8 



9 Of 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 

 30 



1 



2 



3 



4 



Declina- 

 tion. 



25 



25 



25 



16-80 

 18-49 

 19-65 

 20-17 

 21-70 

 20-40 

 18-82 

 17-58 

 17-40 

 17-40 

 18-22 

 17-56 

 19-63 

 19-46 

 16-62 

 19-64 



17-04 



18-82 

 18-18 

 22-30 

 17-73 

 18-68 

 18-14 

 18-88 

 19-82 

 20-25 

 21-93 

 22-65 

 22-92 

 21-50 

 21-53 

 20-45 

 20-76 

 19-98 

 20-03 

 20-05 

 20-32 

 18-20 

 18-70 

 19-17 



20-35 

 19-48 

 19-35 

 19-32 

 19-05 

 18-23 

 18-07 

 18-18 

 19-69 

 20-74 

 20-35 

 21-79 

 20-72 

 20-89 

 20-18 

 20-05 



BlFILAR. 



Cor- 

 rected. 



Thermo- 

 meter. 



Sc. Div. 



° 



525-3 



44- 



523-7 



44- 



520-8 



44. 



519-2 



44. 



5210 



44-« 



522-8 



45- 



522-2 



45- 



519-4 



45-1 



518-3 



45- 



5210 



45- 



518-8 



46- 



515-2 



46- 



513-7 



46- 



516-2 



46- 



520-9 



46- 



521-1 



47- 



514-8 



44. 



516-2 



44. 



513-6 



43- 



516-9 



43- 



516-7 



42- 



519-9 



42- 



518-4 



42- 



519-2 



42- 



520-7 



41- 



516-9 



41- 



5151 



41- 



513-9 



41- 



515-3 



40- 



5211 



40- 



519-9 



41- 



519-6 



41- 



520-7 



41- 



515-9 



42- 



518-7 



42- 



516-4 



42- 



513-7 



43- 



516-8 



43- 



523-6 



43- 



518-6 



43- 



519-3 



43- 



517-4 



44- 



517-6 



44. 



519-0 



44. 



520-5 



44. 



521-3 



44- 



524-4 



44. 



522-9 



43- 



521-8 



43- 



519-4 



43- 



517-3 



43- 



519-2 



42- 



515-7 



42- 



519-7 



42- 



521-9 



43- 



521-3 



43- 



Balance. 



Cor- 

 rected. 



Mic. Div. 



756-8 

 758-5 

 769-7 



740-7 



746-9 

 744-9 

 7537 

 748-1 

 745-4 

 748-7 

 757-3 

 759-6 

 762-0 

 765-9 

 769- 1 

 776-4 

 780-5 

 780-4 

 781-7 

 778-6 

 776-5 

 780-8 

 780-4 

 786-3 

 793-0 

 789-3 

 7800 

 770-9 



761-1 

 760-4 

 761-4 

 762-5 

 760-8 

 762-6 

 757-9 

 759-7 

 760-3 

 763-5 

 755-5 

 760-3 

 770-4 

 770-1 

 770-9 

 776-3 



Thermo- 

 meter. 



44-8 

 450 

 43-5 



49-6 



43-5 

 43-4 

 43-0 

 42-5 

 42-3 

 41-9 

 41-5 

 41-1 

 410 

 40-8 

 40-8 

 40-8 

 40-9 

 41-1 

 41-4 

 41-9 

 42-3 

 42-8 

 43-5 

 43-8 

 44- 1 

 44-5 

 44-6 

 44-6 



44-7 



44-8 

 44-8 

 44-7 

 44-8 

 44-6 

 44-5 

 44-1 

 43-6 

 43-2 

 43-0 

 43-0 

 43-0 

 43-4 

 43-7 

 43-8 



o 



B 

 W 

 W 

 W 

 W 

 W 



w 

 w 

 w 

 w 



H 

 H 

 H 

 H 

 W 

 B 



W 

 W 

 W 

 W 

 W 

 W 

 W 

 W 

 B 

 B 

 H 

 B 

 H 

 B 

 B 

 B 

 B 

 W 

 W 

 W 

 W 

 W 

 H 

 H 



H 

 H 

 H 

 H 

 H 

 H 

 II 

 H 

 W 



w 

 w 

 w 

 w 

 w 

 w 

 w 



Gbttingen 

 Mean Time 

 of Declina- 

 tion Obs. 



31 



h. 



5 

 6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 







1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 







1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 











of 





 

 

 



of 



Of 











































































of 



Of 



of 





 





 



of 





 

 

 

 

 

 

 

 

 

 



ot 



Of 



ot 



Of 



of 



ot 



ot 

 ot 

 ot 







Declina- 

 tion. 



25 20 



25 



21 



27 



13 



46 



19 



44 



19 



26 



18 



84 



18 



74 



15 



44 



25 14 



85 



19 



17 



19 



05 



18 



90 



20 



18 



18 



08 



17 



29 



18 



77 



19 



39 



20 



43 



21 



48 



23 



14 



22 



89 



22 



47 



21 



27 



20 



11 



19 



39 



19 



41 



19 



51 



18 



16 



09 



88 



19 



64 



19 



31 



19 



41 



25 18 



90 



19 



42 



21 



03 



19 



14 



17 



91 



17 



15 



16 



55 



19 



62 



18 



50 



20 



53 



22 



01 



23 



95 



26 



25 



24 



94 



26 



97 



28 



27 



17 



78 



30 



05 



24 



15 



17 



15 



09 



02 



13 



16 



17 



02 



17 



87 



BlFILAR. 



Cor- 

 rected. 



Sc. Div. 



520-5 

 517-2 

 5221 

 5211 

 518-3 

 518-3 

 518-6 

 529-6 



518-2 

 516-2 

 516-9 

 515-5 

 517-1 

 519-6 

 521-6 

 520-9 

 517-6 

 516-7 

 516-5 

 517-3 

 516-4 

 518-8 

 520-9 

 521-4 

 521-6 

 522-8 

 522-4 

 510-1 

 522-7 

 509-9 

 521-6 

 520-1 



521-4 



518-7 

 525-9 

 523-5 

 528-8 

 522-6 

 519-9 

 522-1 

 525-2 

 527-8 

 521-1 

 517-7 

 516-2 

 518-4 

 525-5 

 522-8 

 519-3 

 515-0 

 517-0 

 515-2 

 554-4 

 511-2 

 512-7 

 512-2 



Thermo 

 meter. . 



43 

 43 

 42 

 42 

 42 

 42 

 42 

 41 



41 

 41 

 40 

 40 

 39 

 39 

 39 

 38 

 38 

 37 

 37 

 37 

 37 

 37 

 37 

 37 

 37 

 37 

 37 

 37 

 36 

 36 

 36 

 36 



35 

 35 

 34 

 34 

 34 

 34 

 33 

 33 

 33 

 33 

 32 

 32 

 32 

 33 

 33 

 34 

 35 

 35 

 36 

 36 

 36 

 36 

 36 

 35 



Balance. 



Cor- 

 rected. 



Mic. Div 



772-4 



774 

 785 

 775 

 776 

 772 

 767 

 747 



744 

 746 

 747 

 752 

 747 

 746 

 749 

 753 

 754 

 754 

 752 

 760 

 763 

 768 

 769 

 770 

 767 

 766 

 768 

 787 

 788 

 787 

 775 

 770 



764 



769 

 765 

 758 

 753 

 754 

 753 

 749 

 748 

 746 

 750 

 763 

 769 

 779 

 779 

 817 

 857 

 841 

 835 

 833 

 781 

 753 

 776 

 777 



Thermo- 

 meter. 



43 

 43 

 43 

 43 

 42 

 42 

 41 

 41 



41 

 40 

 40 

 39 

 38 

 38 

 38 

 37 

 37 

 36 

 36 

 36 

 37 

 37 

 37 

 37 

 37 

 37 

 36 

 36 

 36 

 35 

 35 

 34 



34 

 33 

 33 

 33 

 33 

 33 

 33 

 32 

 32 

 32 

 32 

 32 

 33 

 34 

 35 

 36 

 37 

 37 

 37 

 37 

 37 

 37 

 36 

 36 



W 



H 

 H 

 H 

 H 

 H 

 B 

 B 



B 

 B 

 B 

 B 

 B 

 B 

 B 

 B 

 H 

 H 

 H 

 W 

 H 

 H 

 H 

 H 

 H 

 B 

 B 

 B 

 B 

 B 

 W 

 W 



W 



W 



W 



W 



W 



W 



W 



W 



B 



B 



B 



B 



H 



B 



B 



B 



B 



W 



W 



W 



W 



W 



H 



H 



BlFILAR. 



Declination. Torsion removed, — Jan. 27 

 Observed 2'" after the Declination, i-=0'000140. 



0°. Effect of + 10° of Torsion = - 0'-8-i. 



Balance. Observed 3 m after the Declination, /<-=000000S. r 



t Extra Observations made. 



Jan. 2Gi 21h— 27d 7h. The magnet with the short scale used in the declinometer ; the readings of the declinometer have heen corrected for the effect of the 

 removal of the balance magnet. 



Jan. 274 Oh — lib. Balance magnet removed for the purpose of determining its temperature correction by the method of deflections ; its time of vibration in a 

 horizontal plane was determined in the declinometer box between 27d, 8h, and 9h. 



Jan. 31d 6b. A thick cotton cover put over the bifilar instrument. 



