388 Observations in England on the Aurora of 1859. 
The greatest difference observed during this period was — 
1195°91 parts of the scale. One division of the scale corres- 
ponds to ;;34; of the horizontal intensity. Hence the variation 
of the horizontal intensity from Aug. 29 to Sept. 2 amounted 
to nearly /, of its whole value. 
The inclination of the magnetic needle was observed as fol 
age ee ee 
Ows: 
Aug. 29th, 10h 21™ a.m. 71° 31"5 | Sept. 2d, 102 23m a.m, 71° 29'0 
5°23 p.m. 71 19°8 4 16 P.M. 70 269 
6 26 p.m. 71 58 
The mean inclination of the needle in 1859 was 71° 18’. 
communication was interrupted till 11 a. mM. on almost all the 
lines; and likewise Sept. 2d, but with a long repetition alter — 
2 P.M. Sept, 3d, only towards 84 A.M. During the remaining ; 
parts of those days, the perturbations were more or less uniter " 
rupted, nevertheless communication could be maintained in som 
egree. Strong currents caused simultaneous attractions of all | 
the armatures. The galvanometer showed strong deviahon — 
sometimes with slow, sometimes with sudden movements, fom — 
one side to the opposite. : 
_ The intensity of the currents was greatest upon the Tongest ! 
lines going towards the north, on which sparks and unite, — 
rupted discharges were from time to time observed. wit | 
oe were set on fire by the sparks of these discharges. 4 
ergen, where the line to Stavanger runs in a north and ee | 
direction, the current was at times so strong, especially ee | 
and 3d, that it was necessary to connect the lines with the earth ; 
in order to save the apparatus from destruction. The lente : 
na appeared less strong in Christiansand, in the southern part ; 
orway, where the lines run east and west. : 
3 
2. Observations made in different parts of England ; extractel Jr 
the London Times. 7 
A. Durham (lat. 54° 46’). aS noms 
Sept. 1, aurora; Sept. 2, vivid white aurora; Sept. 3, auto 
Sept. 4, faint aurora. a 
minous waves rolled up in quick succession as far a8 ‘hadow 
some of a brilliancy sufficient to cast a perceptible . ’ 
