10 



Daily Obseevations of Magnetometers, April G — May 4. 1842. 



Gottingen 



Mean Time of 



Declination 



Observation. 



Apr. 8 



D. a. M. 



Apr. 6 20 



23 



Apr. 7 2 



5 



20 



23 



2 



5 



Declina- 

 tion. 



20 



23 



Apr. 9 2 



5 



Apr. 10 20 



23 



Apr. 11 2 



5 



20 



23 



Apr. 12 2 



5 



20 



23 



Apr. 13 2 



5 



20 



23 



Apr. 14 2 



5 



20 



23 



Apr. 15 2 



5 



20 20 



23 



Apr. 16 2 



5 



Apr. 17 20 



23 



Ai^r. IS 2 



5 



20 



23 



Apr. 19 2 



5 



20 



23 



Apr. 20 2 



5 



127-67 

 133-77 

 138-93 

 133-51 



127-80 

 133-78 

 140-47 

 135-65 



128-77 

 132-85 

 140-47 

 135-02 



134-44 

 144-32 

 142-46 

 140-73 



126-43 

 132-80 

 140-55 

 136-33 



131-30 

 149-15 

 147-95 

 139-30 



128-75 

 133-13 

 140-10 

 136-62 



152-33 

 142-47 

 144-34 

 136-92 



146-03 

 136-15 

 141-05 

 137-75 



133-53 

 134-13 

 141-80 

 133-82 



134-50 

 136-68 

 144-35 

 134-38 



129-37 

 136-05 

 143-68 

 137-63 



BiriLAR. 



Cor- 

 rected. 



Thermo- 

 meter. 



Sc. Div. 

 517-3 

 511-0 

 524-8 

 529-5 



517-2 

 512-5 

 530-6 

 537-0 



512-1 

 507-6 

 524-9 

 532-1 



505-9 

 493-4 

 518-2 

 537-5 



511-9 

 514-9 

 514-6 

 536-1 



467-0 

 477-6 

 536-3 

 530-4 



506-1 

 500-7 

 512-2 

 531-1 



454-9 

 467-2 

 507-4 

 559-8 



499-3 

 510-5 

 512-7 

 533-4 



521-4 

 503-5 

 518-8 

 535-9 



522-6 

 507-9 

 529-0 

 540-4 



518-0 

 512-0 

 523-9 

 546-6 



Balance. 



Cor- 

 rected. 



46-6 

 46-9 

 47-9 

 49-1 



42-7 

 44-6 

 51-1 

 56-1 



42-2 

 43-7 

 50-1 

 55-6 



44-6 

 45-6 

 50-6 

 53-1 



42-2 

 44-5 

 48-0 

 51-0 



41-7 

 42-9 

 45-6 

 47-9 



41-7 

 42-7 

 44-6 

 46-6 



43-7 

 44-2 

 45-6 

 47-1 



42-7 

 44-6 

 47-6 

 52-1 



43-2 

 44-6 

 52-6 

 59-7 



49-4 

 51-3 

 57-3 

 62-6 



50-0 

 52-6 

 59-4 

 64-8 



Thermo- 

 meter. 



Mic. Div. 

 902-0 

 886-7 

 883-0 

 883-0 



900-8 

 888-3 

 855-8 

 878-5 



900-9 

 882-0 

 869-3 

 878-1 



787-7 

 852-2 

 912-1 

 969-7 



881-9 

 897-6 

 935-5 

 964-0 



880-8 



863-6 



1041-6 



932-1 



903-9 

 916-6 

 896-3 

 907-4 



579-6 



885-1 



931-4 



1063-2 



862-9 

 892-7 

 933-4 

 932-8 



881-6 

 892-1 

 873-7 

 924-2 



858-0 

 880-8 

 874-6 

 920-3 



879-8 

 865-5 

 852-3 

 894-9 



46-8 

 46-6 

 47-4 

 48-1 



43-0 

 44-2 

 49-1 

 55-2 



42-8 

 43-5 

 48-1 

 52-9 



45-3 

 45-6 

 49-1 

 51-1 



42-1 

 44-0 

 46-6 

 48-6 



Gottingen 



Mean Time of 



Declination 



Observation. 



Declina- 

 tion. 



41-5 

 42-5 

 44-1 

 45-9 



43-5 

 44-0 

 45-1 

 46-1 



43-8 

 44-0 

 46-2 

 49-2 



43-4 

 44-2 

 49-7 

 56-7 



49-4 

 50-6 

 55-3 

 60-2 



50-1 

 51-6 

 57-2 

 61-7 



d. h. m. 



Apr. 20 20 



23 



Apr. 21 2 



5 



20 



23 



Apr. 22 2 



5 



Apr. 



May 



Maj 



20 



23 



Apr. 23 2 



5 



Apr. 24 20 



23 



Apr. 25 2 



5 



20 



23 



Apr. 26 2 



5 



BiFILAR. 



41-8 



20 







42-7 



23 







44-6 



Apr. 27 2 







46-2 



5 







20 



23 



Apr. 28 2 



5 



20 



23 



Apr. 29 2 



5 



20 



23 



50 2 



5 



May 1 20 



23 



Maj- 2 2 



5 



20 



23 30 



3 2 

 5 



20 



23 



4 2 

 5 



133-20 

 137-70 

 140-33 

 135-75 



130-52 

 134-33 

 137-98 

 137-58 



128-48 

 130-90 

 137-80 



132-47 



120-85 

 132-20 

 137-63 

 134-44 



128-01 

 131-67 

 137-77 

 135-02 



126-35 

 131-62 

 136-62 

 135-65 



128-83 

 131-69 

 137-43 

 135-63 



127-54 

 132-93 

 137-74 

 138-82 



130-16 

 134-13 

 140-53 

 138-34 



128-63 

 134-70 

 142-88 

 137-45 



130-60 

 136-82 

 142-06 

 136-93 



131-22 

 133-35 

 138-96 

 135-65 



Cor- 

 rected. 



Thermo- 

 meter. 



Balance. 



Sc. Div. 



511-8 

 508-8 

 526-6 

 529-0 



513-3 

 519-9 

 531-4 

 529-2 



518-6 

 511-6 

 529-5 

 536-3 



518-11 

 511-3 

 529-9 

 541-4 



522-0 

 517-5 

 534-7 

 541-9 



520-0 

 513-6 

 527-0 

 540-3 



519-3 

 516-8 

 530-7 

 547-2 



518-9 

 517-7 

 533-4 

 543-8 



518-2 

 512-1 

 526-7 

 535-4 



530-0 

 520-4 

 532-1 

 538-9 



519-2 

 519-6 

 530-1 

 534-2 



527-0 

 514-6 

 527-3 



537-5 



57-1 

 58-6 

 63-7 

 66-9 



53-6 

 55-0 

 62-0 

 62-6 



49-9 

 50-6 

 54-6 

 62-6 



Cor- 

 rected. 



Thermo- 

 meter. 



491 

 50-8 

 57-6 

 61-6 



46-6 

 49-2 

 551 

 59-3 



47-5 

 48-6 

 54-3 



59-8 



46-3 

 50-1 

 57-1 

 61-4 



48-1 

 49-1 

 52-8 

 55-8 



47-9 

 50-4 

 56-3 

 60-0 



47-0 

 50-5 

 56-1 

 60-0 



52-9 

 53-1 

 55-7 



58-8 



Mic Div 



859-1 

 860-8 

 845-7 

 919-2 



870-7 

 887-8 

 861-4 

 867-0 



868-8 

 884-5 

 857-7 

 865-8 



50-6 867-4 



51-3 855-6 



57-6 855-7 



62-2 849-8 



873-7 

 850-9 

 808-3 

 846-6 



865-7 

 861-1 

 852-4 

 841-2 



867-6 

 859-6 

 829-5 

 808-7 



853-7 

 854-7 

 832-1 

 844-9 



874-6 

 852-4 

 842-5 

 858-2 



863-3 

 844-0 

 822-2 

 840-9 



866-6 

 857-3 

 843-9 

 853-7 



858-7 

 845-0 

 836-6 

 841-1 



BiriLAR. yt=00001248 g=0-000304=2-44 Scale divisions. 

 Balance. Mar. 21* 20''— April leJ A-=0-0000118 g=0-000073=6-20 Micrometer divisions. 

 April 17<i —Oct. 8-1 t=0-0000130 ^=0-000073=5-60 Micrometer divisions. 



April 15<i aO^. (observation 20"" late, caused by error in the house clock. 



April 22* 20''. The previous observations were made by Mr Russell; for the follovring I am responsible. 



May 2* 23''. Observation 30™ late, omitted while observing Polaris. 



J. A. B. 



