﻿106 

 1902. 

 June 30. — At 9h. 27m. p.m., faint aurora arc from 01).servation Hill to Crater Hill, altitude 15° to 18°. 

 It had completely disappeared at 9h. .32m. p.m. 

 At lOh. p.m. glow over Crater Hill. 



July 1. — 2h. a.m. More or less permanent glow E.N.E. to E.S.E. (true), waxing and waning rapidly in 

 intensity. Streamers occasionally E.S.E. to S.S.E. Maximum intensity in various directions at 

 various times and in any one direction only lasting for the briefest space (4 or 5 seconds). 

 Temperature, - 16' F. Quite calm, clear sky. Intensity at greatest = 3rd magnitude stars. 

 Curious shadow efl'ect under streamers, extending N. by E. to S.S.E. (true). Distinct double 

 curtain in E.S.E., altitude 40°. Upper curtain fainter than lower and occasional streamers above 

 it, extending to altitude 40°. Streamers to the E. faint, altitude 20° to 30°. Maximum intensity 

 equal to star of 2nd magnitude. - 13° F. Wind N. by E, 1. Clear sky. 



6h. a.m. Faint glow N. to N.E., faint streamer rising 20° in that direction. - 22" F. Calm 

 and bright. 



8h. a.m. Arc formed of vertical rays, extending from N.E. magnetic through N. to N.W. 

 (magnetic) and ending in a faint glow along the hill tops at W. (magnetic). Maximum height of 

 arc 20°. Length of beams 10° to 15°. Intensity faint. No pronounced beams. - 22° F. 

 Calm and no wind. Fifteen minutes previous to this there were no beams between W. and 

 N.N.W. (magnetic), but a faint arc of luminosity and three detached masses of auroral cloud and 

 a few faint beams in N. (magnetic). 



July 2. — 2h. a.m. A faint sign of auroral curtain E.N.E. to E. by S. (true), altitude 45°, lasting for a 

 few seconds. 



July 4. — 2h. a.m. Some slight patches above Harbour Hill and here and there towards zenith. Light 

 streamers also over hills to the N. of Harbour Hill. 



4h. a.m. Two bands of streamers of fair brightness, of greenish-yellow light, having a sharply 

 defined lower edge, extended in the form of fractions of arcs from just above Crater Hill 

 towards the S., and rising in that direction as well as from a little to N. of Harbour Hill and 

 extending in same direction. From these bands streamers radiated towards, and almost extended 

 to zenith, but continually varying. These portions of arcs then changed their form and assumed 

 a more zigzag, or serpentine form, and continually changed their shape, glowing and waning in 

 the same varied manner. 



At 4h. 10m. a.m. a bright strand of sti-eamers shot up over the hills further to the N., 

 extending to within 40° of zenith. This also glowed and waned rapidly and was of a greenish- 

 yellow line. 



At 4h. 20m. a.m. some streamers were also seen in the S., very faint, while a confused film of 

 streamers and patches of auroral light continued to play in the E. and N.E. 



At 4h. 25m. a.m., part of double arc stretching from S.W. (magnetic) to about W. (magnetic). 

 Very faint ; not much brighter than the " Milky Way." Space between the two arcs 3° ; larger 

 space at W. extremity, where arcs were about 20° above horizon. In S.W. (magnetic) arcs rose 

 up from above hills. One or two isolated streamers to S. of S.W. (magnetic). Phenomenon 

 very transient. No movement, excepting that of light glowing up suddenly and then dying 

 out again in a few seconds. Carefully examined light with Metz direct-vision spectroscope, but 

 could see no sign of lines. 



At 4h. 35m. a.m., low arc of light suddenly formed from S.W. to N. 25° W. (magnetic) and 

 became comparatively intense, as bright as any yet observed. Altitude in N. (magnetic) 15° and 

 rising from behind hill in S.W. (magnetic). No sign of streamers. Colour yellowish green. 

 Examination with the spectroscope revealed the characteristic yellow line in the greenish-yellow 

 part of the spectrum quite plainly, but very faint, and not sufficiently well defined to measure 

 its position, Temperature, - 9° F, Light air from E. by N. true, clear sky. 



