167 



22nd, 17.40 The luminous nebula descended till it appeared to 

 skirt the N. highlands of Ross Island. 



17.45 The effect still continued, though generally weaker. 

 The luminescence increased over the main cloud 

 strata standing above Mount Erebus; a couple of 

 faint streamers appeared in one part. 



17.55 Only small patches at the end of the original 

 phenomena remained, especially the part in 

 proximity to Mount Erebus was most persistent. 

 At this time the horizon-haze over McMurdo Sound 

 appeared puce-coloured below and pink above. 



18.00 A faint blush appeared fading away over the N. slope 

 of Mount Erebus. 



18.30 No aurora. Horizon glow strong this evening, 



19.35 A faint nebulous blush high above the horizon to the 

 S.E. 



.20.00 A faint distinct auroral blush to the S. connected-with 

 the upper luminous fringe of the horizon-haze. The 

 haze had now cleared mostly from the Ross Island 

 highlands, but was as strong as ever over the 

 Sound. A faint auroral band appeared across the 

 sky to the S. of the zenith, trending E.X.E. 



'20.30 The auroral band persisted and a stronger, though 

 still faint one, crossed the heavens to the S. of the 

 zenith parallel to the former. This arc was dis- 

 tinctly curtained and apparently very low. 



22.45 Xo aurora. The upper portion of the haze over the 

 Sound faintly luminous lit with the greenish-yellow 

 colour of aurora. 



24.00 An auroral glow above and along the upper edge of a 

 large strato-cumulus cloud, extending from the S. 

 by E. to the S.E. by E. The cloud extended 

 upwards for about 8° of arc above the horizon, and 

 the glow extended to a total of about 18° of arc 

 above the horizon. At the same time there was a 

 single large faint beam extending vertically above 

 the summit of Mount Erebus for about 10° of arc. 

 The rest of the sky was clear and starlit. Xo 

 moon was visible; atmosphere somewhat hazy. 

 "23rd, 00.50 A fairly bright auroral curtain from about S. by E. 

 to E.S.E., with a maximum height of about 40° 

 above the horizon. Below this was a larger and 

 brighter curtain aurora apparently rising from 

 behind a stratus or strato-cumulus cloud-bank to 

 the S.E. A single faint vertical beam was visible 

 simultaneously above the summit of Mount Erebus. 

 2.00 A couple of luminous auroral patches in the zenith. 

 A faint curtain right across the sky from X.X.AY. 

 to S. by E. A bright luminous auroral glow of a 

 pale golden-green tint over the top of an extensive 

 strato-cumulus cloud banked in the direction of 

 Mount Bird, and extending horizontally from Cape 

 Bird for about 30° from W. to E. Vertically the 

 cloud rose for about 8° of arc. The glow above 

 it, which was exactly coextensive with the cloud, 

 extended vertically through about 4° or 5° of arc. 

 There was a slightly luminous appearance in the sky 

 behind Mount Erebus. 



