Prof. E.. Loomis on the Aurora of 1859. 333 
The following table shows for each station in how many 
cases the minimum deviation of the magnetic needle occurred 
earlier than at Gottingen; in how many cases it occurred at the 
Same instant as at Gottingen; and in how many cases it occurred 
later than at Guttingen. 
Minimum deviation of the magnetic needle, 
atc 
Earlier, — ag Later. Earlier. ton} Later. 
Petersburgh, 7 x 3 || Heidelberg, 0 1 
Christiania, 0 0. ||Munich, 3 12 3 > 
Upsala, 11 17 2 |Kremsmunster,| 0 eae a 
Stockholm, 8 4 1 ||Hague, l 2 Oo 
Copenhagen, 6 1¢ 2 Breda, 5 15 6 
Seeburg, 0 1 0 ||Brussels, 0 aoe eo 
Altona, ( 1 0 arburg, ) 26 1 
Berlin, ‘ 3] 0 || Augsburg, ) 1 0 
Leipsic, 28 2 | Geneva, 0 1 poy 
Breslau, 3 26 2 || Milan, 0 24 4 
Freiberg, 0 4 0. ||Makerstoun, 0 Bnd 
Cracow, 0 9 0 blin, 1 8 4 
Prague, 0 1 8 NGreehwick, 1 B° f°3 
We perceive from these observations that the progress of the 
Magnetic minima was nearly in the same direction as that of the 
Magnetic maxima. We may draw a great circle through Got- 
tingen in such a manner that at every station on the N.E. side 
of this line, the minimum occurs earlier more frequently than 
later; while at all those on the S.W. side of this line (without 
mportant exception), the minimum occurs later more fre- 
quently than earlier, This line runs from N. 62° W. toS. 62° E., 
indicating progress in a direction from N. 28° E. to 8. 28° W. 
t 
i c Simulta- 
Earlier. — Later. Earlier. sinha: Later. 
16 10 5 || Heidelberg, 0 0 1 
2 8 0 || Munich, 3 82 } 
24 44 3 emsmunster, 1 : a 2 
3 § Hague, L 
18 33 » |} Breda, 9 BE 8 
0 2 » || Brusse 0 11 8 
9 4 0 || Marburg, 0 5 y 
4 67 Augsburg, 0 4 0 
{ 67 : Gene 0 § 8 
vf 60 3 || Milan, 0 54 1 
0 13 0 || Makerstoun, 0 ] ¢ 
] 18 0 Dublin, y 4 16 
Toren bh 
