( 607 ) 
Variations de la déclinaison magnétique observées à Bruxelles , de 5 en 
5 minutes, et pendant 24 heures, à partir du 22 décembre 1841, 
à 10 heures du soir , temps moyen de Gœttingue. 
| HEURES. 
! 10 h. s. 158,30158,39,58,19/58,17|57,87 |57,62157,55 58,24158,38)58,31I} 
11 — 58,04158,09,58,14158,14158,06 |57,69157,49157,39 57,34 57,30157,26|57,03 
Minuit . 156,70156,55,56,43/56,17|56,31 |56,59,56,73156,85 156,93 |57,01157,07157,11 
1h.m, 157,16157,13157,16/57,17|57,28 |57,53157,74157,81 157,79 157,54157,43|57,41) 
2 — 157,19/57,20157,21/157,08/57,05 |57,05|57,09/57,02 157,01 |57,09/57,05|57,10 
3 — 57,06/56,95,56,91,56,85,56,86 |56,86156,78/56,84 56,87 |56,82/56,84|56,79 
4 — 156,72/56,71,56,94156,99/57,12157,09157,05/57,01 56,83 |56,86|56,92 D 
5 — 156,91/56,90,56,91/56,83/56,88 157,08156,78156,81 |56,86 |56,97|57,00 nd 
6 — 156,84156,83156,84156,94157,12/57,13/56,97156,99 57,12 156,93|57,11156,93 
; 7 — À56,94/56,83156,79/56,79/56,78 156,83156,75156,73 56,66 |56,64/56,42[56,22 
| 8 — 156,12,/56,16,56,21156,20156,27 |56,23156,37|56,53 56,76 |56,69/56,79157,05 
1 9 — 157,04156,56,56,48/56,35156,26 56,36|56,50 56,57 |56,55 56,44156,65|56,77 
10 — }56,94,57,04,56,91157,32156,90,56,77|56,73 56,55 156,29 156,08 56,25|156,41 
12 — 56,70,56,76/56,73156,69,56,64/56,22156,71 slines 56,63156,74156,29 
Midi. 56,14/56,13,55,90156,01 56,25 |56,12156,12,56,11 156,15 |56,25/56,31156,44 
. 1 hs. 156,47156,50,56,47156,52156,58 156,42156,45156,44 156,36 /56,47|56,49/56,52 
2 — 156,65,156,71,56,74156,77156,80 56,81156,77 cd | ds 56,80/56,80|56,30 
3 — 156,79/56,81,56,76/56,78/56,80 156,81156,89 po: 56,88|56,95 56,97] 
| 4 — 156,98157,03157.00157,06,57,1357,08/57,11 HR à 57,10157,09157,13 
| 5 — 57,11/57,12,57,18/57,19157,16 ,57,18157,11157,16 57,12 |57,06|57,06 81,01 
) 6 — }57,00/57,02,57,02157,00|157,00 57,00,56,99,57,03 Ed 57,07|157,33 57.45) 
7 — !57,31157,21157,13157,24157,49 157,70157,59 APS OS 57,21157,13 FR 
8 — 156,97157,00/57,05157,06,57,08 157,10/57,11 s7,12 57,15 57,14157,13 57,31! 
9 — 157,95/58,23| » |57,95157,80 57,94157,98,57,88 157,78 |57,67]57,67 En 
10 — 57,61] » » » » » » » n » n » 
57,55 Le | 
