﻿105 



1902. 



June 13. — Ahout llh. 45m. Aurora glow suddenly appeared in S. 25° W. (magnetic) and stretched up in 

 a nari'ow winding ribbon to about 20° above the hills. The light was fairly intense, but died 

 out almost entirely in 15 minutes. Examined the light with spectroscope, but could not 

 distinguish even the characteristic line near D. Temperature, - 2G° F. Wind E. Ijy N., 2. No 

 clouds. 



2h. a.m. General dift'used light from N.N.E. to S.W. (true), bright but rapidly fluctuating 

 streamers in N.N.E. from ridge top to zenith, others shorter and fainter in E. and S.E. Very 

 little that was defined in the S. and W. 



4h. a.m. Two companion streamers in N. (true), about 45° in altitude. A faint arc of 

 streamers in N.E to (true) S.W., strongest to the N., but faint and fluctuating in intensity. A 

 pale difTused light in the S. 



6h. a.m. Only a very faint streamer in N.E. true, and more diffused streamers over 

 Observation Hill. 



8h. a.m. About a third of a semicircular arc of vertical rays rising from the horizon at N.E. 

 (magnetic) and attaining an altitude of from 30° to 40° in N. (magnetic), or a little W. of N. 

 (magnetic). Intensity faint, length of beams up to 10°. Movement practically nil. At the 

 same time an irregularly vertical streamer of light was to be seen in E.N.E. magnetic, fading 

 out at about 50° or 60° from the horizon where it originated. -31° F. Wind E., 4. The 

 display was higher than the faint arcs usually seen at 8 a.m. 



June 14. — 2h. a.m. Faint auroral glow, about 11° in altitude, S.W. by W. (magnetic). 



4h. a.m. Faint auroral arc, with curtains extending from S.W. by W. (magnetic) to N.N.W. 

 (magnetic) and rising to an altitude of 45°. One bright streamer shot up to an altitude of 75° 

 from S.W. by W. (magnetic). 



4h. 30m. a.m. One definite streamer shooting up from S. 20° W. (magnetic) to altitude of 

 75°. This gradually faded away and was not to be seen at 4h. 40m. 



5h. a.m. Long single streamer again visible in S. 20° W. magnetic, rising to 75°. 



6h. a.m. Disconnected patches of curtain, extending from N.N.W. (magnetic) to E.N.E. 

 (magnetic) at an altitude of 30°. Between these patches long beams arose to an altitude of 70°. 

 Phenomenon faint. 



8h. a.m. A disconnected aurora arc from N.E. by N. to S.W. (magnetic), and from 

 20° to 30° in altitude at centre, N. extremity 10° to 15° in altitude, and S. extremity about 5°. 

 Length of individual streamers not more than 8°, on an average about 3°. Fluctuations in the 

 intensity of the light, but very little apparent movement. There was, however, a very gradual 

 movement up towards the zenith and advanced to within about 3° of it at noon. 



At 10 minutes after noon the phenomenon had entirely disappeared. Brightest patches 

 were very carefully examined with spectroscope (direct vision), but no lines could be distin- 

 guished, the light evidently being too weak. Colour of phenomenon, nebulous whiteness, at 

 times faintly green. Temperature at 8h. a.m., - 32° F. ; at about lOh. a.m. or lOh. 30m. a.m., 

 - 43° F. ; at noon, - 32° F. Barometer low, but steady. Light N.E. airs, clear sky. 



June 15. — 6h. a.m. Very faint rays in N.N.E. magnetic, altitude above horizon 10° to 12°, rays 1° to 2° 

 in length. Temperature, - 24° • 8 F. Wind N., 2. No clouds. 



8h. a.m. Arc of vertical streamers, starting from horizon at N.E. magnetic, rising to 20° 

 and 30°, its highest at N.N.W. magnetic, and falling to S.W. and S. magnetic. Streamers 

 bright, massed together and luminous, with a greenish tinge at N.N.E. magnetic, and at this end 

 rather short, say 10°, whereas towards S.W. and S. magnetic they were very faint, narrow, and 

 long, say 30° in length. -36°'8F. Calm, clear sky. Intensity faint, except for a few seconds 

 in N.N.E. magnetic, where it was greenish and close, otherwise all white or faint straw colour. 

 Movement imperceptible. Convergence of streamers on each side of centre of arc towards W. 

 and N. 20° W. magnetic. 



From June 15 to June 30 bright moonlight or overcast skies prevented any aurora being seen. 



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