﻿124 



1903. 



August 16. — 2h. a.m. Faint auroral arcs and rays, E. to S. true, altitude 10° to 30°. Calm. b. Tempe- 

 rature, - 12° F. 



4h. a.m. Auroral display, bright at times, N. to S.E. true. Wind E. by S., 2-3. b. - 9° F. 



Midnight. Vertical beams of aurora showing over Oljservation Hill, just discernible. 

 Wind E, 4-5. b. - 9° F. 



4h. p.m. Faint aurora. 



August 17. — An unusual position for aurora observed soon after llh. p.m. Arc extending from S. magnetic 

 to E. 25° S. magnetic, apex S.E. by S. magnetic, altitude 17°. It is very unusual to see an 

 auroral arc in the N.W. true. 



Midnight. Very faint streamers over Crater Hill. Bright arc from Crater Hill to 

 Observation Hill, maximum altitude 25°. Faint display S.W. to S. true and changing rapidly. 

 Extensive patches from S. to N.W. true, and which rapidly disappeared. Altitude of highest 50°. 

 b. Wind N.E., 4-5. Temperature, - 15° • 2 F. ; min. - 25° ■ 2 F. 



2h. a.m. Bright streamer of irregular altitude, from S.S.E. to N.N.W. true, the highest 

 being 25°. b. - 16° F. ; min. - 19°-8 F. Wind N.E., 3-4. 



August 19. — 2h. a.m. Bright band of irregular thickness, from 20° altitiide at N.E. true, direct to zenith 

 and 5° beyond. Arc to S., 30° altitude, stretching S.E. to S.S.W. true. Not .so brilliant as 

 zenith band. 



At 2h. 5m. the whole phenomenon had faded greatly and did not again become bright, 

 although watched until 2h. 15m. a.m. E.N.E., 5-6. b. Temperature, - 11° F. 



4h. a.m. Streamers and patches of light N. to E. and extending to zenith. A few stray and 

 less brilliant streamers to southward. Calm. b. - 9° F. 



August 23. — llh. 20m. p.m. Bright aurora, extending from N. by W. to S.E. true, glow over the hills, 

 but no beams. 



August 25. — At 5h. 50m. p.m. diffused band of aurora from N. to E. true, across tops of hills and in gap, 

 forming a double arc. Width of band and arc 3° to 5°, diffused green and faint pink in lower 

 parts. Light seemed to be moving from N. to S. Average altitude 10° ; highest N., where it 

 was nearly 15°, and lowest E., where it was only 8 . 

 At 6h. p.m. light had almost entirely disappeared. 



August 26. — 2h. a.m. Long, low arcs, well-defined and complete, formed of closely jJacked rays of small 

 altitude. The largest arc rosa to 10°, and stretched from N.E. to S.E. true, joining here a 

 smaller, which rose to only 3° or 4°, and extended from S.E. to S., or a trifle W. of S., true. 

 Movement slight. Portions of broken arc and a few beams appeared at greater altitudes, but 

 the brighter jjarts were all low. Intensity fairly marked in E. Greenish light. Calm. b. 

 Temperature, - 32° F. 



4h. a.m. Much aurora in the N., E., and S. true, up to the zenith. An extensive folded 

 curtain of long beams rose from the N. to the zenith. Diffused greenish light mingled with 

 broken arc in the "gap" and over the hills to the N.E. Long beams shot upwards from what 

 were apparently broken arcs, or curtains, in various parts of the sky, from the horizon 

 upwards, S., E., and N. Intensity of individual patches, bright and greenish, for a short while 

 here and there. Movement inconspicuous. No brilliancy in the zenith and no appearance of 

 corona. Light W. airs. - 26 F. 1). 



From 7h. p.m. to 7h. 50m. p.m. l)rilliiuit aurora was observed. Started with rays showing up 

 above the hills from N. magnetic all the way round to S. magnetic. Some of these I'ays were 

 exceptionally long, extending, in some cases, to an arc of 50 ' (vertically). The display seemed to 

 have no special form. All manner of sinuous, evanescent streamers, arcs, &c., were observed. 

 At about 7h. 35m. p.m. one streamer, or ray, about 1° in width, extended vertically above 

 Observation Hill to about 83° in altitude. This is the longest ray we have observed. At 



