170 



24th, 21.00 The X. end of the area previously affected glowed 

 afresh for a few moments. 



21.15 Minute ice crystals falling. A faint luminescence in 

 the N.E. area and a stronger effect on the upper 

 strata of the horizon-fog to the TV. 



21.30 Conditions remain the same. 



21.45 Luminescent haze to the N.E. still remained. 



22.00 Conditions the same. 



22.30 .Heavier snow fell. 



23.00 Continued to snow. 



23.15 Clearing in the zenith and to the S. In the zenith the 

 horizon-haze was very dark below, with a strongly 

 luminous upper border. As the sky cleared these 

 conditions found to exist in all quarters. Several 

 parallel luminous bands appeared crossing the sky 

 . in an almost N. and S. direction. Several of these 

 bands developed weak streamers. A weak streamer 

 development also appeared on the luminescent 

 upper border of the horizon-haze to the S. ; also in 

 the N. at the same time. At the same time some 

 of the zenith curtain streamers (where they 

 approach the horizon) blended uniformly with the 

 horizon-haze. This established the independence 

 of the streamer effects and the luminous horizon- 

 fog. 



23.30 \ The sky still clearing; horizon very dark to a height 

 23.45 j of 10°; above this a luminous haze. The luminous 

 appearance was lower to the N. Ija the S. to W. 

 and in the N. sky several dark patches of cloud 

 appeared in the luminous haze (the latter is of the 

 same intensity as the Milky Way). It was fairly 

 evident from this the main bulk of the illumin- 

 ation originates behind the clouds referred to. In 

 the N. by "W. sky near the horizon an indistinct 

 streamer was observed bearing down through the 

 fog. 



2oth, 00.15 Traces of a curtain 65° up in the E. trending N. and 

 S. ; composed of broad streamers terminating in 

 an evenlv luminous lower border. A streamer still 

 persisted in the N. by W. As bearing on the 

 possibility of the luminous fog being due to 

 reflection from a distant aurora, it may be 

 remarked that at that time any auroral display 

 would have been visible in the clear starlight sky 

 between the zenith and 10° of the horizon. A 

 cloud mass in the N. by E. sky was surrounded by 

 luminous borders. 



00.30 The conditions were generally the same. The 

 luminous belt on the S.S..E. horizon was now 

 brighter, one patch tending to become a 

 streamer. A long smooth nebulous band becoming 

 alternately brighter and fainter crossed the 

 heavens; this extended N.N.W. to the zenith, then 

 bent to a N. and S. trend as far as the N. horizon. 

 A streamer was noted rising from the N.N.E. 

 horizon and afterwards fading. 



