185 



17th. clouds, which trend about E. and W. The moon 



is bright in the N\ 



13.30 An auroral glow had for some time been observed 

 waxing and Availing on a light cloud-bank 10 c 

 above the horizon to the S.E. by S. Faint 

 streamers rose from time to time. The .sky was 

 almost clear overhead. 



1-5.00 A strong auroral display in the form of a long hand 

 trending S.E. by E., and extending from the S. 

 horizon to a point in the W. 70° up. As this 

 band faded, another developed parallel to it, ex- 

 tending from the S. horizon, crossing the sky only 

 5° to the AY. of the zenith ; this hand was sharply 

 delineated along its E. side, but fuzzy to its W. 

 border : the arc howed slightly concave to the W. 

 The display must have heen a strong one on 

 account of its brightness, notwithstanding the red 

 glow from the daylight on the X.AY. horizon and 

 that from the moon on the S. horizon. 



15.15 The arc had swung round noticeably to the E. 



15.20 This Avas the brightest period; the arc extended from 

 the S. to X. horizon and had broadened out very 

 much oA'er Ross Island, being quite 20° of arc in 

 breadth at the zenith; the southern end over the 

 Ross barrier swung still further to the E., form- 

 ing a noticeahle elboAv. The Avhole display ex- 

 hibited a body-drift to the S.E. A cross cleavage 

 Avas well deA'eloped, though differing from earlier 

 observed cases in that the planes Avere iioav curved.- 

 At a later stage the more intense belt formed 

 itself into a scroll-like pattern. An offshoot ran 

 out from the zenith to the X.X.E., travelling over 

 some 30° of arc in a few minutes. Shortly afterwards 

 a portion of a band trending N.N.E. developed 

 over Mount Erebus, but soon faded. 



15.45 The display had iioav faded, and remained visible 

 only on the S.E. and E. horizon, wliere, hoAvever, 

 it Avas bright. 



10.00 A fairly bright band had deA'eloped along the Erebus 

 highlands about 30° aboA'e the horizon. 



16.15 A brilliant display progressing to the E. of Mount 

 Erebus and as far as the S. horizon. Chiefly 

 observed Avas a long and brilliant curtain with 

 lower margin 10° aboA'e the horizon, and high' 

 streamers extending to a height of 25° ; this band 

 shoAved a coloured selvage beloAv. Shortly after- 

 wards its X'. extremity appeared to hang OA'er 

 Mount Erebus, and a ring (open only in the X'.) 

 deA'eloped, apparently hanging OA'er the cone of 

 the mountain; the excitation traA'elled to the S.. 

 producing the appearance of a rapid rippling of 

 the luminescence. At a later stage a strong 

 auroral gloAv rose from the X". top of Mount 

 Erebus. The X'. highlands of Ross Island Avere 

 covered by ragged cumulus-nimbus clouds, and 

 behind these an auroral gloAv AAas obseiwed, which, 

 however, did not produce the effect of a luminous 

 edge. 



