342 J. M. Schaeberle—Aurora of September 12-18, 1881. 
1280". Arch 15° high, symmetrical with respect to the mert- 
dian. Irregular black patches distributed throughout the space 
enclosed by the arch; sky in the northwest has a reddish tinge. 
Motion from east to west, 1° in 3 secon 
» 10". Waves toward the zenith very violent ; streamers 
50° lon 
12» 13 17”. Whole northern sky up to 45° altitude, in great 
commotion; streamers 60° | 
12" 30™60", Streamers from the east and west points of 
horizon meet south of the zenith, techie the square of Pegasus, 
several parallel spans formed and en at short intervals. 
. Streamers extend 15° soaeeast of the point of conver- 
ae which is now near a Androm 
13% sake —- east to west, altitude 25°; vigorous ac- 
tion of auroral w 
13° 30%. The « croasing of the streamers in the zenith gives the 
appearance of a zigzag motion 
» 30". Point of convergence near 6 Andromede. 
13" 41™, Remarkable streamer E. 30° N., beginning in the 
horizon and for a distance of 8° making an angle of only 30° with 
it, then suddenly changing its direction to parallelism with i 
orizon. 
13" 55". Sudden abatement be peor action; looks as 
oasis dott the ao was coming to a clos 
Two arches formed, BEN in the N.E. the other in the 
N, N. Ww. “4 joining ech other in the horizon 15° east of north point. 
Observations resumed at 15" 45". The view now presented to 
the Shsewter baffles all description. The whole northern sky 
ee N. 55 W., to N. 55 E. and from the horizon to 60° altitude 
one mass of moving fire. The auroral waves succeed each 
‘than with great rapidity. Each wave autos throughout the 
entire width of the aurora, and the flashes toward the zenith are 
in the form of segments of a circles or zones spa to the 
horizon. In the northeast the phenomenon known as the merry 
dancers is very beautiful. ‘A little to the west of north wing. the 
of the aurora at the close of my observations. Athov h the 
moon was still two ee from last quarter the A cece 
seen with a vividness truly remarkable the following 
came up. An arch was formed and broken several times. 
About nine o'clock the northern sky had the appearance of 
being covered with faint streamers 40° long. Later the aurora 
‘Seaweed died out, and by eleven o’clock no trace of it could 
seen 
