(492 ) 
F'ariations de la déclinaison magnétique observées à Bruxelles, de 5 
en 5 minutes, et pendant 24 heures, à partir du 24 mars 1841, 
_ à 10 heures du soir, temps moyen de Gœttinque. 
50’. | 55’. 
HEURES. | 0’. | 5”. 
10 h.s. [56,56 se 
| 
57,84157,59/57,22156,80|56,68|57,024/57,16/56,88 
57,68,57,87/58,24/58,59/58,58|58,53158,05|57,58 
56,20/55,92,55,74155,67/55,19/54,55/54,69/55,43 
57,64/58,15/58,:3158,68/58,47/57,99/57,44/56,97 
55,56155,56|55,68[56,04156,21156,25/56,48/56,54156,52|56,35 
56,37 56,27/56,10/55,89/55,80/55,69/55,68/55,34 
| 
11 — |56,81156,87 
Minuit . 
1h. m. 156,25 [56,69 
56,16/56,29 
57,22|57,49 
54,41/54,41 
— |55,20/55,27!55,17154,84 
3 
4 54,27/54,59/54,83155,05/55,13[55,13/55,12|55,16 
5 5 | 
6 — 155,05154,81/54,74154,69 
7 
8 
9 
54,99155,09154,96/54,86155,06|55,33|55,13|55,07 
54,82/55,07155,19/55,25[55,08154,96/55,16|55,06 
55,14155,32/55,21154,98/55,11155,05/55,16|54,96 
54,81/55,19/55,24155,38/55,52|55,55|55,39|55,39 
54,9954,99 Ho 54,99/55,11/55,15/55,23 
54,33154,25/54,17153,97153,93153,92/54,07|54,18 
53,80/53,63/53,35/53,31153,30|53,33|53,37|53,37 
53,11|52,98/52,93/52,88|52,85|52,79/52,97|52,97 
52,87152,86153,50[53,37[53,40[53,27|53,27|53,40 
53,34 cedlés es 53,60/53,59/53,56|53,53[53,46 
53,42[53,45153,39/53,46|53,53153,58[53,60|53,67 
53,94153,99/54,04/54,07[54,17/54,20/54,23|54,26 
54,37|54,37/54,35|54,35/54,38/54,41154,41154,42 
54,48154,52[54,52/54,54154,54154,55|54,56|54,56 
54,72[54,73154,69154,71154,71|54,72|54,74[54,91 
55,38/54,51155,50/55,50155,67/55,99/56,16|56,36 
56,22/56,19/56,06/55,96/55,97[55,91/55,86/55,81 
— |55,00/54,98/54,86155,11 
— |54,98/54,96/55,03|55,22 
— (55,30/55,37155,36154,92 
10 — |55,09/54,86/54,74154,53 
11 — |54,23/54,26/54,10/53,95 
Midi. . [53,52/53,40153,32|53,35 
Dhs. |52,87/52,87152,83/52,88 
2 — |53,38/53,48153,38/53,36 
— |53,43|53,48153,37|53,38 
— |53,72/53,79/53,87153,93 
54,22/54,32 
54,46|54,47 
54,66/54,65 
55,32/55,81 
ps 56,2 
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