lUS RECORD OF AURORAL PHENOMENA. 



\_TIie following observations were accidentally omitted."] 



Cumberland House.— Lat. 53° 56' 40" N. Long. 102° 16' 41" W. October 23, 1819, to June 

 13, 1820. Hood. 



"January 14, 1820. At ten p. m., Aurora faintly visible north. 

 19th. An Aurora, embracing the horizon from N. N. W. to N. N. E., about 12° high, 5° broad ; 



faint, but permanent; twelve p. m. 

 20th. At eleven p. m., an arched Aurora, centre north, 15° high, and 5° broad. 

 21th. At ten p. m., an Aurora 40° high and 5° broad ; usual color, and faint; centre north. 

 February 2d. An Aurora very faint; centre north, about 2° high; extending from east to west. 

 8th. Appearance of an Aurora, at ten p. m., in the northern horizon. 

 10th. An Aurora arched, centre N. by E., about 4° high and 30° long. 



12th. At ten p. m., an arched Aurora, centre north, about 6° high. Between it and the zenith, 

 were sometimes visible several perpendicular streams, with one extremity pointed, and declining 

 nearly in the direction of the dipping needle. They sometimes reappeared in the same place 

 which they had occupied at first. I shall, for the future, call them flashes. 



19th. An Aurora across the zenith, cutting the meridian at right angles. That side of it which 

 faced the south was a regular line ; but the other streamed at intervals towards the east or 

 west, separating itself into portions resembling the flashes, but much smaller ; color as usual ; 

 many flashes near the northern horizon. This Aurora was followed, on the 20th, by a storm of 

 snow E. S. E. 



29th. An Aurora arched, centre north, extending 60°; height 30°, breadth 5°. Towards the 

 eastern extremity, it was broken, by a quick undulating motion, into those portions described 

 above, which I shall call beams, because they appear to tend towards a common centre, though 

 their direction is sometimes altered when in motion. Color as usual. 



March 4th. At twelve p. m., a beautiful and singular Aurora; four regular concentric arches, the 

 outermost extending from N. N. W. to E. N. E., about 30° high, and the others at equal dis- 

 tances within it, the last being 7° high. Each was 3° broad; faint, but visible for three hours. 



5th. An appearance of Aurora in the northern horizon. 



6th. A large, brilliant, arched Aurora, centre N. N. E., at nine p. m. It advanced rapidly to the 

 southward, separating into beams, and scattering many flashes. The motion of the beams was 

 exceedingly quick, and they were bright, but of the usual color. They ranged themselves in 

 wreaths, forming Corona? Boreales in the zenith, which faded gradually, leaving a pale undis- 

 tinguished body of light, out of which they were soon again renovated, without apparent com- 

 munication with any other body of the Aurora. 



7th. At one a. in., the above Aurora spread over the whole sky, except a portion from S. S. E. to 

 S. S. W. 



At nine p. m., an arched Aurora, centre N. N. E. ; many flashes, which, at twelve p. m., filled the 

 northern half of the sky. 



8th. An arched Aurora, centre N. N. E. It did not advance to the zenith, but separated into 

 brilliant beams, and scattered many flashes. The motion of the beams was in wreaths, or seg- 

 •ments of circles ; rapid, and exhibiting at the lower extremities a red-orange color, and at the 

 upper faint yellow. 



9th. At eight p. m., an Aurora consisting of several arches, the highest of which was the faintest. 

 They were almost obscured by flashes between them and the spectator. 



10th. At nine p. m., an Aurora, in-rapid motion, seen through breaks in the clouds. 



11th. An Aurora, in many segments, from E. N. E. to W. N. W. ; beams in rapid motion; ordi- 

 nary color. 



12th. At eight p. m., an arched Aurora, centre N. by E. At ten p. m., it approached near the 

 zenith, and broke into beams and flashes. Ordinary color. 



14th and 15th. Aurora just visible through the clouds. 



16th. A bright Aurora, but almost hid by the clouds. 



17th. Aurora visible through a dense haze. 



