we 
abundant, and forming a very stable corona at A.R. 341° N.P. D. 64$°,— 
18° of the horizon was pervaded by a rush upward of auroral waves in a 4 
constant and quite regular succession. Two to four of these waves might = 
be seen following one another, but with interrupted courses, up toward = 
such an 
aly. This movement, as naturally suggested by the phenomenon itself 
when first noticed many years ago, is a result of the relative direction of 
electrical currents along the streamers and the like currents of the earth and 
At 2" 30™ a cluster 23° high in the N.E. by E., was observed 
to have about 2° a minute of this lateral movement. It was more or less 
ad 
masses obscured the view. These increased until toward the first ap- 
pearance of twilight; but through the rifts and clear spaces in the N. 
a rd o fina 
_ also determine, in certain hysical the material 
in the Northern Lights eee Ped At 3" 30™ and 
ossesses luminosity. oy 
r of Orion and above it, a limited and 
