No aurora was seen at 3 hours and 4 hours, but at 4.07 a rather taint band 

 (moderately bright in places), with little motion, was seen to extend Irom X.X.W. 

 to S.E. 



At 5 and 6 hours, no aurora was seen, but clouds were visible in the north. 

 At 7 hours, faint patches of light were seen due East, at an altitude of 30. 



No observations were then recorded during the bright portion of the clay, 

 but, at 19 and 20 hours, the sky was clear, no aurora being visible. 



At 21 hours, an arch was observed between N.E. and S.E. at an altitude 

 of 25, with streamers rising from the arch to an altitude of 40. 



The sky was clear and no aurora was visible at 22 hours, as also at 24 hours 

 and at 1 hour on the 3rd May. At 23 hours, however, a very faint ill-defined 

 patch of aurora was visible over the shoulder of Mt. Erebus (in the N.E.). 



May 3rd. 



A. similar faint glow was seen in the same spot at 2 hours. 



By 3 hours, the aurora had developed into a faint band stretching from N.E. 

 to S.S.W. at a low altitude, with another band stretching from N.E. towards 

 W.S.W. (altitude CO ), but fading away in the west. A faint glow was also seen 

 slightly north of Mt. Erebus. 



At 4 hours, the situation was little changed, except in respect of the second 

 band, which had disappeared, its place being taken by an incomplete arch extending 

 from N.N.E. to meet the first band about East of Cape Evans. 



At 4.17, only a single band was to be seen stretching across the zenith from 

 N.N.W. to South. A few isolated streamers were also visible between N.E. and 

 South. 



At 5 hours, a bright band was seen from N. by W. to N.E. at an altitude of 

 about 20, with a few isolated streamers above it and also in the East. 



By 6.15, the auroral display had moderated to two low faint streamers South 

 by East, the same condition also obtaining at 7 hours. 



The above sequence of observations is typical (except as regards the trend of the 

 arches) of many of the auroral displays, particularly in the tendency to the formation 

 of arches and the sequence of aurora at successive hours, often broken by periods of 

 " no aurora." It is worthy of note, also, that on all three days special mention is 

 made of aurora between 4 hours and a few minutes past. 



An auroral display was generally initiated by the appearance of streamers low 

 down in the N.E. quadrant, in the late afternoon or evening. As the evening progressed, 

 these streamers increased in number and in altitude, at the same time appearing also 

 in the adjacent quadrants. This tendency continued until about 4 a.m., when the 

 aurora often passed overhead in the form of arches extending roughly from North 

 to South. Later, the arches, moving at right angles to their trend, extended 

 occasionally into the western quadrants. 



3 A2 



