382 \PEDITION TO POINT BARROW, ALASKA. 



iiotic declination and veil ical force were but liltle affected, while tin- horizontal force was very 

 greatly inn-eased. The hand was invisible at 4.">0, and the sky soon clouded over. 



.m'iiT !.">, 1SS2, i! (i. JH. to 7 a. m. As early as 1 a. in , while the twilight was still bright, 

 pale whitish bands were to be. seen crossing the sky from the X. to SE. These at 2 a. in. had 

 developed into an aurora, brightness as high as 2, beginning near the SE. horizon in Pegasus, 

 where it was brightest, narrow, and of a yellow color. As it approached the zenith in the form of 

 a sinuous shifting band it beeame somewhat paler, and stretched in width from Cassiopeia to 

 CygiMi:;, narrowing again and ending in the twilight just below Ursa Major. Most of the aurora, 

 was white in color. At .'3 a. in. a broad arch (brightness 3; passed from the SE. horizon, begin- 

 ning iu Pisces and running through Pegasus, Andromeda, Lacerta, Draco, and the tail of the Dip- 

 per, and ending in Canes Venatici. Slight magnetic disturbance. At 4 a. in. the sky was hazy 

 and no aurora visible, and at 5 a. in. the sky was clouded over. At G a. in. pale bands (brightness 

 1) stretched across the sky from Taurus and Aries in the SE. through Ursa Major near the zenith, 

 ending in Corona Borealis. At 7 a. m. there was one pale band (brightness 1) in SE., occupying 

 the constellations Gemini and Leo, and another similar but smaller band low in W., in Hercules 

 and Vulpeculn. 



September 25, 1882, 2.17 a. m. to . Up to 2 a. in. the sky was completely covered by heavy 



stratus clouds, but at 2.17 these broke away near the zenith, exposing several horseshoe-shaped con- 

 centric sinuous arches rising from the N". The apex of the brightest arch was near Polaris, and other 

 paler bauds apparently formiug part of similar arches were visible in Cassiopeia. The near arch 

 had a brightness of 2, the others about 1, and all appeared quite unstable. The sky continued 

 much covered with rapidly moving clouds and the aurora was only visible at intervals through 

 openings between them. At 3.17 a. m. three pale (0 to 1), motionless, slightly arched horizontal 

 bands were visible in the N., in the constellation Canes Venatici. At 4 a. in. the sky was much 

 clearer, and a band of streamers pointing towards zenith flashed across the sl;y from NW. to S. 

 on an arched course at an altitude of about 45. The motion of translation from N. to S. was very 

 rapid and accompanied by a rapid vibration from S. to If., and vice versa. The brightest part of 

 the display was tinged with red and yellow, and reached a brightness of 3. At 4.1 7 there was a 

 a small patch of aurora reaching a brightness of 3 in the constellation Aries on the SE. horizon. 

 This had the form of a vertical sinuous streak, and showed red and yellow colors, fading rapidly 

 and shifting and twisting. At the same time the clouds in the SW. were illuminated with a bright 

 greenish auroral glow. After this the sky became completely overcast. A magnetic disturbance 

 began in the afternoon and continued all night (local time), the declination varying through a 

 range of 1 38', the horizontal force .424 and the vertical force .055. 



,v< 'i>t,'in In r 2(5, 1882, 3 a. in. to G a. m. At 3 a. m. the clouds had broken away so as to leave the 

 northern sky clear, and then there appeared three horizontal curtains taking in about 45 of 

 azimuth from the N. to NE., the altitude of the highest being about 30. They occupied for the 

 most part the constellation Leo, though with the twilight and moonlight it was impossible to see 

 the stars distinctly. Their brightness was 3, the lower edge of each curtain colored bright rose, 

 then yellow, and finally pale yellowish green. There was a rapid lateral vibration and the whole 

 had completely faded in about five minutes, leaving only a few bright streaks, and a new curtain 

 then formed a little farther to the E. At 4 a. m. there were small patches in Bootes and a quiet 

 narrow arch, greenish with a faint rose tinge on lower edge, brightness 3, running from near 

 Arcturus, on the northern horizon between Castor and Pollux, and ending in the clouds near the 

 Llyadcs. This had entirely faded at 4.17, when a broad sinuous band rapidly developed from the 

 N. running from near Areturus, through Ursa Major, Ursa Minor, Cassiopeia, and Taurus, toward 

 the SE. horizon. This moved rapidly towards the W., reaching Cygnns in two minutes and 

 quickly fading there, the southeast end in the meanwhile having broken into irregular si reaks. 

 At 5 a.m. the aurora was faint and pale yellowish green, in the form of two streaks running 

 through Leo, (iemini and Cancer. At (i a. m. a broad bright sinuous band crossed the sky from 

 K. to S.. passing through the zenith and moving rapidly toward the E. Brightness .'!. The 

 sky then became cloudy. A large; magnetic disturbance lasted through the aurora, with decrease 

 Of all three elements. 



30, 1S82, 1.17 a. m. to 4.30 a. j. The aurora was fully developed at 1.17 a. in., when 



