EXPEDITION TO POINT BAHROW, ALASKA. 425 



the clouds in the NE. A magnetic disturbance commenced about 5 a. in. and lasted all night 

 (local), reaching its maximum about 12 in. (Washington time). 



February 0, 188.".. 12.15 <i. >. to 12.15 j>. m. The early part of the evening was cloudy and stormy. 

 However, at 12.15 a. m. traces were visible through the clouds in the NE. At 1 a. m. the clouds 

 were broken away somewhat, and much bright light, obscured by broken clouds, was visible in 

 the E. For the next six observations the clouds were thick and tin- weather stormy. At 8.15 a 

 yellowish-green band, with short, motionless streamers (brightness 1 to 2), ran from Orion and 

 Taurus, through Auriga, IVrseus, Cassiopeia, Andromeda, Cygnus and Draco. At !>.15 there was 

 an aurora of essentially the same character as at 8.13. At 10 an arch of diffused light (brightness 

 1 to 2) ran from the KSK. to "WNW., with its crown at an altitude of about l.V- above the southern 

 horizon. At the same time a baud of similar character rau iVom the E. to NW., through Cygnus, 

 Ursa Minor, and Auriga. The latter had disappeared at 10.13, the former remaining unchanged. 

 At 11.13 there was a broad band of quiet streamers, with its crown at an altitude of about 13 above 

 the southern horizon, running from ESE. to WNW.j and au elliptical corona continuing towards 

 the zenith with its greatest diameter E. and W., the rays changing position rapidly at short inter- 

 als (brightness 2). There was still a corona of the same form at 12.15, but paler (0 to!) and 

 quiet, brightest in the W., and fading in the E., occupying Cancer, Lynx and Camelopardalis in 

 the ]S\ and Leo Minor, (Ames Venatici and Hercules in the S. It was broad daylight at the next 

 observation. A magnetic disturbance of considerable violence began about 5 ;;. in. and continued 

 all night (local), reaching its maximum about 1.2 m. (Washington time). 



Frbrmu-y 7. 1SS:.J, 12.15 a. m. 1o I a. m. The sky was hazy during the early part of the evening, 

 but a faint arch was discernable at 12.15 a. in. in the NE. from ESE. to NX W., with its crown at an 

 altitude of about 30. There were also traces at 1 a. in., but after this the sky became overcast 

 and the weather cloudy and no more aurora was seen. The magnetic needles were but little dis- 

 turbed, although the intensity was very small. 



February S, 188,'j, '> n. m. to 10.15 a. m. Traces of a low arch were observed in the NE. at 3 a. 

 in., somewhat obscured by haze, and at .'3.15 this arch had risen so as to pass from WNW. (o ESE. 

 through Cygnus, Lyra (<*), Corona Borealis, Bootes and Coma Berenices. At -i a. m. a zone, not 

 very broad and rather hazy (brightness 1), had its starting points KSK. and NW. in Virgo and 

 Pegasus-, with its western edge running through Leo, Minor, Ursa Major, Oamelopardalis, Cassio- 

 peia and Andromeda, and its western through Leo Cancer Gemini, Taurus. Aries and Trianguhun. 

 This was somewhat narrower and less hazy at -1.15. At 5.15 a broad, yellowish, quiet band (bright- 

 ness 1) ran from NW. in Pegasus to ESE. in Coma Berenices and Bootes, the eastern edge through 

 Cygnus, Lyra, Draco, Canes Venatiei and Bootes, the western through I.aeerta, Cassiopeia. I'rsa, 

 Minor, and Ursa Major. At (5.15 the main band, waving slightly, ran through Pegasus, Andro- 

 meda, Cassiopeia, ramelopardalis. I'rsa Major, Coma Berenices and Bootes, with a small secondary 

 band from Lacerta through Cygnns, Draco, and Bootes (brightness of all, 1 to 2). At 7.15 there was 

 only a faint band (brightness to 1) through Virgo, Leo, Cancer, Gemini and Taurus, and at S.15 

 merely traces around the southern horizon. At !> a. in. a belt of streamers (brightness 2), about 20 

 long, white, and quiet, encircled the entire horizon, and at an average altitude of about 10. At 

 9.15 there was an arch from the SK. to SW. with its crown at an altitude of about 40 above the 

 southern horizon, and a broad striated band starting from the same point in the SR. and running 

 to the NW., including Ursa Major in the S. and Cassiopeia in the N., with an arch of short rays, 

 centering towards the zenith, starting from the NW. end of the band and running through the 

 Pleiades, Aries, Andromeda, Cygnus and Sagitta. All were white and quiet (brightness 2). At 

 10.15 there was a white, quiet, diffused arch from the KSK. to WNW., with its crown at an altitude 

 of about 15 above the southern horizon, with an arch of streamers from E. to NNW., through 

 Cygnus, Ursa .Minor, Camelopardalis and Taurus, slowly changing in form (brightness 2). The 

 arch \vas in the same place at 11.15, but paler (brightness to 1) and there were a lew faint streamers 

 in the E. and NW. The magnetic intensity still continued low. and there was a slight disturbance, 

 lasting from 8 a. m. to about 1 p. HI. 



Fcbrtutri/ 10, 18.S3, 8 a. m. to 11.15 it. /. The violent storm having moderated about 8 a. in. 

 {.'3 ]). in. local), a quiet band was visible through the haze, passing through Leo, Cancer, Gemini 

 and Taurus (brightness to 1). At 0.15 traces were visible in the SW., and at 10.15 there were 

 II. Kx.-u -,l 



