( 604 ) 
Variations de la déclinaison magnétique observées à Bruxelles, de 5 en 
5 minutes, et pendant 24 hewres, à partir du 26 novembre 1841, 
à 10 heures du soir, temps moyen de Gættinque. 
A HEURES. 
0’. 
57: 
40". 
45”. 
50155" 
DIRES ECRIRE 79 EE ER EEE LAND DE DT TE EE EEE ART RS MEEEUERS © EEE EURE JE EEE CE 
10 h. s. |56,86[56,85156,90/56,89/56,92|56,81156,96/56,96156,97/57,05/57,04/57,02 
11 —  |57,03157,02/56,99/57,04/57,08/57,00/57,02/56,96156,86/56,90/56,88/56,75 
Minuit . |56,82156,85156,82156,84156,86156,82/56,9557,05/57,02156,99/56,96|56,86 
1h.m. |56,84156,86/56,91156,87156,85/56,75156,88/56,93156,89/56,89/56,94/56,94 
2 — |56,85/56,78/56,61156,58/56,64156,64)56,65|56,57 |56,72 156,81 57,03|57,00. 
3 — |57,06[57,08/57,27157,26157,23157,18/57,15,56,08/56,81156,82|56,87|56,79 
a — |56,69/56,62156,64/56,82|56,90/57,00/56,92/56,89/56,90/57,04/56,92/57,05 
5 — |56,97156,77156,82|56,68/56,63156,72156,71156,70|56,81156,80/56,63|56.78 
6 — |56,82156,82|56,88/56,93/57,00!57,05/57,07157,02/57,05/56,98/56,93|56,87 
1 — |56,80/56,85|56,90156,83/56,86/56,84/56.87/56,82/56,88/56,88/56,84156,85 
8 — |56,86156,83156,87156,86156,78156,91,56,89/56,85156,87156,85156,85156,82 
9 — |56,80/56,79/56,86/56,90/56,78,56,76/56,78/56,72|55,72156,66|56,61156,59. 
10 — |56,58156,52/56,42/56,45/56,39/56,36,56,25156,32156,35|56,22|56,22|56,22 
11 — |56,25/56,18/56,10/56,11/55,92/55,90/55,90155,91/55,94/55,98/55,87|55,88 
Midi 55,91155,86/55,86/55,78/55,76|55,75/55,74155,70/55,77|55,78/55,75|55,78 
1h. s. |55,80/55,79/55,77155,67|55,71155,86/55,76/55,75/55,94/55,96/55,99|56,09 
2 — 56,07156,12156,15/56,17156,18,56,22/56,21156,18/56,19/56,12156,10|56,14 
3 — |56,16/56,15/56,09/56,08/56,06156,16/56,16156,18/56,16/56,15/56,14156,15 
4 — |56,17/56,16/56,19,56,20/56,25/56,32)56,23156,22|56,28|56,23156,18|56,27 
5 — |56,25156,34/56,37,56,28/56,21156,17156,08/56,16/56,24156,15/56,17|56,22 
6 .— |56,26156,36|56,39/56,44156,52/56,59156,57156,59156,67156,73156,74156,72 
7 — |56,77/56,83156,84156,88156,83156,82/56,80156,83156,80/56,79/56,8956,91 
8 — |56,84156,84156,79156,74156,72|56,82156,95|57,26|57,53|57,77|57,86|57,67 
9 — |56,39/57,22/57,06157,06157,53157,63/57,57157,5357,51|57,45/57,36|57,28 
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