% 
HEURES. | 0’. | 5’. | 10’. 
to hs. |56,64156,70|56,72 
in —0156,93/57,14[57,19 
Minuit . |56,09/56,06|56,43 
1h. m. |59,17159,12|58,99 
2 — |58,79/58,7958,81 
3 — 155,92/56,07[56,33 
a — |58,22/58,15/58,65 
5 — |57,99/57,97|57,93 
6 — |57,31/57,44/57,58 
7 — |55,16/55,21/55,24 
8 — À56,76/56,66|57,07 
9 —:156,76/56,65|56,57 
Duo —  |56,69/56,59/56,24 
Man —.|55.17/55,13/55,23 
laid. . |54,96/54,02/54,61 
1h. s. |53,69/53,72153,55 
2 — 156,10/56,03155,87 
3 — 155,51/55,20/54,83 
Doas — 15415/55,23/56,49 
Los — 156,01156,12156,13 
8 —.157,73[57,7057,58 
om. |o1,54/61,27|61,31 
| 8 — |58,95/58,39/58,09 
lo — |56,87/56,75/56,61|: 
Il 
(601) 
Variations de la déclinaison magnétique observées à Bruxelles, de 5 
en 5 minutes, et pendant 24 heures, à partir du 20 octobre 1841, à 
10 heures du soir, temps moyen de Gættinque. 
20”. 
57,28 
5 
59,17 
58,02 
56,79 
55,86 
57,29 
56,15 
56,21 
55,20 
| 
56,76/56,69 
59,25|5 
58,38[5 
57,48/5 
25° 
57,18 
57,11 
58,93 
57,61 
56,94 
53,51 
55,50 
54,62 
58,39 
56,19 
59,55 
59,42 
58,02 
56,80 
56,62 
57,28 
57,605 
58,77 
56,67 
57,10 
59,20 |5 
58,095 
57,39 
56,12 
57,34 
55,89 
56,19 
54,145 
54,40 
53,58 
56,05 
54,44 
57,10 
56,22 
60,40 
58,78 
58,06 
56,84 
155,50/55,30155,47 
1156,23155,72/55,57 
153,87[54,18 
,44156,07|56,01/5 
40’. | 45".| 50’. 
SRE 
57,30|57,26|57,10 
58,20/58,48/58,77 
58,48/58,77|58,89 
57,35/57,44157,77 
58,7458,37158,32 
58,08/57,90/57,98 
56,23156,24/56,16 
57,06/56,99/5 
56,48/56,39 
55,96/55,61|: 
54,00154,05|53,93 
54,03[54,99/55,55 
55,83[55,83[55,6 
53,79/53,93/54,52 
0 
56,35/56,19,5 
62,46/62,00|61,25 
59,64/59,52/59,50 
57,65/57,28|57,05 
56,35/56,36|56,51 
55e 
