394 EXPEDITION TO POINT HAlHtOAV, ALASKA. 



sky. No :mr<ir:i was recorded at tin- 8 p. in. observation. The sky then clouded over and did nut; 

 dear again until 1 a. in. on the 20th. when their was visible a band from near |;J Ursa- .Ma juris 111 

 the NNW. across the zenith to Cassiopeia, with a corresponding band ill the KSK. running- up 

 towards it but not meeting it, from Taurus through Aries and Andromeda (brigl: 1 

 were pale broken bands in the AY. and an arch low in the. NE. in Canis Minor and Leo. The SE. 

 par', of the band was gone at 2.17, the eastern aurora was paler, aiid there wa.s an additional streak 

 in Ursa- Major. At 2 a. in. there were two broad streamers in Ophiuchus in the XNW.. about 5 

 above the horixon (brightness 1): pale and shifting at 2.10 to 2.17. At 3 a. in. there was a pale 

 band from the same point in the NNW. to Eridanus in the SE., passing close to /; Cygni and 

 through Pegasus. This developed rapidly into a baud of curtains and streamers, forming an in.' 

 plete corona, which centered near a Cygni at 3.10. These streamers vibrated rapidly from E. to 

 W. and from W. to E. The curtains were 2 to 3 in brightness, the streamers were 1, brightest in 

 the N\V.; and brightly colored yellow and green, succeeding one another in the cider named. from 

 the horizon up. At .'5.17 there was a rosy glow in the NW. and a broad zone across the /.enith, 

 made up of writhing, twisting bands of streamers in exceedingly rapid motion, both rotating and 

 shooting from N. to S. and the reverse. There were the usual green, yellow, and red colors, bright, 

 and the brightness was 2 to 3, possibly -1 in places, though much dimmed by the bright moonlight. 

 The magnetic disturbance which had hitherto aft'ccted only the horizontal force now extended to 

 the declination, which fell over (P. At the same time a semi-corona was formed from Ursa Major 

 to Andromeda. At 4 there were streamers all around the horizon except in Andromeda (bright- 

 ness 1 to 2), white, about -45 long and 10 or 15 above the horizon. The whole faded rapidly, 

 having nearly disappeared at 4.17. The declination increased about 13. At ~> a. m. there was 

 another complete corona (brightness 1 to 2), centering in Cainelopardalis. a few degrees SW. of 

 the /.enith. At G there were several yellowish-green arched bauds with streamers from Gemini 

 through Cepheus, Cassiopeia, Andromeda, and Lacefta to Cygnus, slightly vibrating. At 0.15 

 the whole had moved a few degrees southward (brightness 1 to 2). At 7 there were two faint 

 arches (brightness to 1), one from Taurus to Pegasus, and the other from Hercules to Bootes. At 

 8 there was a short, broad, yellowish-green band (brightness 1 to 2), from Monoceros to Taurus in 

 the s., sending up motionless streamers. At 9.17 there was another perfect corona, with the rays 

 brightest and most numerous in the SE., S., and SW., apparently motionless, and white (brightness 

 1 to 2). The corona still continued at 10.17 a. m., but its rays in the XE. no longer sprang from the 

 horizon, but from a bright arch whose extremities were in the SE. and XW., and its crown about 

 40 northeast of the zenith. The rays vibrated slightly; traces of aurora were still to be seen 

 through the clouds at 11.17 a. in., but after that the sky was completely covered. The magnetic 

 disturbance continued during the night, though its maximum was reached between .'i and 9 a. m. 



\nrcmhcr 21, 18S2, 4 a. m. to 12.30 p. m. The early part of the night was cloudy, and when it 

 cleared at 1 a. in. there was only a pale glow in the N. and KE., and two or three very faint arched 

 streaks close to the southern horizon, which wholly faded away. The sky became clouded at 9, 

 clearing partially at 11.17, when traces of aurora were visible for an instant only through the clouds, 

 apparently without color or motion. At 12.17 a. m. a corona was observed (brightness 3 to 4) in the 

 form of a circle all round the horizon, fringed with short rays, centering towards the zenith, but not 

 reaching it, lasting only a few minutes. Its color was white, and the streamers vibrated slightly. 

 At 12..'!0 another corona was observed in the form of an ellipse, with its longest diameter E. and 

 with long streamers converging to the zenith, and fringed with streamers on the outer edge, col- 

 ored bright rose, with interspaces of bright myrtle green (brightness .'! to 1). There was consid- 



i!e rapid E. and W. vibration, and the display lasted only a lew minutes. The magnetic needles 

 were exceedingly (|iiiet, up to about 8 a. m., when a disturbance commenced, lasting till 10 p. in., 

 especially affecting the horizontal force and declination, reaching its maximum at the time of the 

 formation of the corona. 



2'). 2 a. in. t-o 12.L7 p. m. When the sky cleared at 2 a. m. there was observed a 



;(! vertical band in the X. from near the horizon towards the zenith, starting at a point in 



tes, one branch running to the NE. through Ursa Major, the other up through ("rsa Minor to 

 the zenith (brightness li to I ). This had laded at 2.1~>, and a hazy arched band (brightness 1) ran 

 from Hcivules high in tlie N\V. through ,'* Cygni and the ; square of Pegasus, disappearing in the 



