Daily Observations of Magnetometees, March 11 — April 6. 1842. 



Gottingen 



Mean Time of 



Declination 



Observation. 



Declina- 

 tion. 



d. h, m. 



Mar. 11 20 



23 



Mar. 12 2 



5 



Mar. 13 20 



23 



Mar. 14 2 



5 



20 



23 



Mar. 15 2 



5 



20 



23 



Mar. 16 2 



5 



20 



23 



Mar. 17 2 



5 



20 



23 



Mar. 18 2 



5 



20 



23 



Mar, 19 2 



5 



Mar. 20 20 



23 



Mar. 21 2 



5 



20 



23 



Mar. 22 2 



5 



20 



23 



Mar. 23 2 



5 



20 



23 



Mar. 24 2 



5 



125-47 

 127-40 

 132-10 

 127-85 



130-98 

 136-88 

 131-47 



127-75 

 133-90 

 141-64 

 136.12 



128-77 

 133-87 

 134-58 

 132-62 



128-60 

 132-27 

 1.34-55 

 131-43 



127-05 

 134-40 

 140-09 

 140-83 



128-48 

 132-97 

 138-47 

 133-77 



128-37 

 128-67 

 130-78 

 128-32 



122-65 

 129-67 

 136-05 

 131-72 



125-45 

 130-13 

 134-30 

 1.30-50 



BlFILAR. 



Cor- 

 rected. 



Tliermo- 

 meter. 



Sc. Div. 

 516-6 

 514-4 

 5295 

 534-5 



516-9 

 532-2 

 531-7 



527-6 

 518-7 

 531-5 

 532-9 



5200 

 518-0 

 527-0 

 538-6 



514-6 

 514-1 

 528-3 

 528-6 



510-4 

 511-4 

 524-2 

 529-4 



513-0 

 510-9 

 522-2 

 535-9 



510-6 

 511-4 

 523-6 

 531-7 



514-2 

 512-9 

 521-1 

 527-4 



521-6 

 518-2 

 544-9 

 541-6 



527-8 

 503-8 

 529-0 

 5340 



45-1 

 47-1 

 52-1 

 53-5 



45-1 

 51-0 

 52-3 



48-6 

 52-6 

 55-4 

 56-3 



50-1 

 51-1 

 54-6 

 55-6 



45-4' 

 48-1 

 54-6 

 52-6 



43-6 

 44-6 

 48-1 

 52-3 



43-5 

 44-1 

 50-3 

 51-9 



38-5 

 42-7 

 47-6 

 52- 1 



43-2 

 43-7 

 46-6 

 49-1 



40-7 

 42-2 

 48-6 

 55-2 



56-7 

 59-4 

 60-4 

 61-9 



Balance. 



Cor- 

 rected. 



Thermo- 

 meter. 



Mic. Div 

 866-0 

 893-0 

 861-6 

 856-3 



873-0 

 844-1 

 855-2 



856-2 

 841-3 

 821-4 

 836-4 



871-3 

 869-2 

 828-0 

 855-9 



869-7 

 893-8 

 867-3 

 879-5 



887-5 

 892-6 

 872-9 

 864-3 



880-1 

 891-3 

 878-2 

 926-2 



880-5 

 892-2 

 865-2 

 840-7 



888-0 

 904-0 

 894-5 

 892-7 



875-7 

 890-1 

 857-7 

 832-8 



845-0 

 866-9 

 8490 

 849-7 



Gottingen 



Mean Time of 



Declination 



Observation. 



46-9 

 47-6 

 51-6 

 52-6 



45-1 

 50-1 

 51-6 



48-6 

 52-1 

 54-7 

 55-7 



49-9 

 50-6 

 54-9 

 55-2 



46-1 

 47-6 

 53-4 

 52-6 



44-2 

 45-1 

 48-1 

 51-8 



44-6 

 45-1 

 49-9 

 51-6 



39-0 

 43-0 

 48-0 

 51-8 



44-5 

 45-1 

 47-1 

 49-4 



40-8 

 42-6 

 48-4 

 53-6 



58-2 

 60-5 

 61-1 

 62-9 



d. h. m. 



Mar. 24 20 



23 



Mar. 25 2 



5 



20 



23 



Mar. 28 2 



5 



Mar. 27 20 



23 



Mar. 28 2 



5 



20 



23 



Mar. 29 2 



5 



20 



23 



Mar. 30 2 



5 



20 



23 



Mar. 31 2 



5 



20 



23 



1 2 



5 



Apr. 



Apr. 



Apr. 

 Apr. 



Apr. 



Apr. 



5 2 

 5 



20 



23 



2 2 



5 



Declina- 

 tion. 



3 20 

 23 



4 2 

 5 



20 

 23 



20 



23 



6 2 



5 



125-12 

 129-75 



133-25 

 136-42 

 138-55 

 131-20 



129-50 

 133-60 

 139-60 

 136-52 



131-13 

 133-04 

 142-80 

 139-76 



127-20 

 131-42 

 134-82 

 131-87 



124-39 

 128-98 

 137-32 

 134-20 



127-61 

 130-93 

 137-20 

 134-15 



127-00 

 131-52 

 136-20 

 135-62 



128-38 

 131-87 

 138-40 

 133-10 



128-68 

 134-30 

 139-89 

 132-95 



BirlLAE. 



Cor- 

 rected. 



Tliernio- 

 meter. 



Sc. Div. 

 515-9 

 507-2 



518-9 

 533-1 



520-1 

 499-6 

 528-4 

 546-3 



519-3 

 510-9 

 526-4 

 527-6 



511-0 

 511-3 

 517-9 

 538-0 



519-6 

 511-0 

 530-0 

 5321 



523-4 

 516-7 

 506-2 

 530-1 



514-8 

 510-0 

 516-9 

 530-4 



513-3 

 508-3 

 529-7 

 543-5 



513-6 

 511-1 

 5300 

 543-2 



509-0 

 507-9 

 530-3 

 539-5 



48-9 

 51-3 



45-1 

 49-4 



44-1 

 46-5 

 5M 

 52-5 



44-6 

 46-1 

 50-6 

 51-4 



43-7 

 44-5 

 47-2 

 50-4 



44-5 

 45-3 

 49-1 

 50-4 



43-4 

 44-2 

 47-4 

 48-5 



41-5 

 42-2 

 43-2 

 43-2 



39-2 

 41-7 

 48-4 

 531 



42-2 

 44-2 

 50-4 

 55-7 



43-2 

 44-6 

 51-1 

 56-6 



Balance. 



Cor- Thermo- 

 rected. meter. 



Mic. Div 

 859-5 

 874-9 



873-1 

 911-7 



8690 

 900-0 

 924-7 

 960-9 



900-4 

 898-0 

 889-2 

 925-3 



881-0 

 898-9 

 906-5 

 928-3 



905-2 



898-4 

 888-9 

 903-7 



900-6 

 890-4 

 890-6 

 917-7 



894-5 

 895-4 

 889-7 

 910-8 



911-2 

 8S6-4 

 895-5 

 915-5 



900-2 

 890-9 

 879-8 

 893-3 



873-0 

 882-0 

 890-5 

 899-2 



49-9 

 51-9 



45-6 

 48-6 



43-5 

 45-6 

 49-2 

 50-9 



45-1 

 46-1 

 49-1 

 501 



43-5 

 44-1 

 46-1 

 48-6 



44-6 

 45-1 

 47-9 

 49-1 



43-3 

 43-8 

 46-1 

 47-1 



41-5 

 42-0 

 43-0 

 42-8 



39-5 

 40-8 

 46-3 

 50-1 



42-5 

 44-0 

 48-5 

 53-1 



43-5 

 44-3 

 49-1 

 53-8 



BiFlLAR. A'=0-0001248 g=0-000304=:2-44 Scale divisions. 

 Balance. Jan. 23<i —Mar. 21* 5^ J-=0-0000140 g=0-000073=5-20 Micrometer divisions. 

 „ March 21<i 20''— April 16<i A;=0-0000118 5=0-000073=6.20 Micrometer divisions. 



March ll* 20'', 23'' ; March 12'' 2'', 5''. Observations of the declination at tliese hours have been corrected for torsion by 

 -t-3'-30. See note March 14<i. 



March 14''. Torsion of Declinometer thread examined. Circle moved 54°. Left reading 27G°. Mr Russell conceived this 

 torsion to have taken place on removing the magnet in order to make the Dip observation March ll** 6'', when most probably fiom 

 the thread getting loose for a moment the fibres took a different disposition inter se. 



March 25'' 6''. On removing the detorsion bar from the Declinometer after the Dip observations, the suspension cylinder was 

 accidentally let slip. Brass bar suspended throughout March 26'', and torsion removed. Circle left reading 326°. 



March 25'' li" — 6''. Declinometer employed in malting intensity observation. 



March aSii 20'' — 23''. Observatory being cleaned. 



M.VG. OBS. VOL. I. 



