44 SCOTT'S LAST EXPEDITION [Juny 
There was an aurora all night, and at 3 A.M. Bowers noted a 
brilliant variegated curtain, altitude 30° to 60°, extending from 
the N.E. to about S.S.W., with much motion in the rays, and with 
orange and green well defined. 
Sunday, July 30, 1911.—We had a day of perfect weather 
and good travelling and covered 7% miles. The amount of day- 
light during this and the preceding two days has been surprisingly 
great, and enabled us to see a tremendous amount of detail in the 
hills and snow slopes of the promontory on our right, all of which 
looked very much nearer than they actually were. The dawn 
on the eastern horizon was also exceptionally fine in colour, al- 
most pure carmine in a very broad band, changing imperceptibly, 
but without any intermediate orange or yellow, into green and 
blue above. The peaks of the Western Range all caught pink 
lights reflected from the sky, and these shone up against the 
greyer pink foreglow behind them. None of them caught the 
actual sunlight yet. 
The temp. was low, — 55:3° in the morning, — 63-2° to — 61°8° 
in the afternoon, and on to the evening, with light easterly and 
north-easterly airs from time to time. [Apropos of the cold: we 
now got low temperatures once more, but — 60° now hardly called 
for comment; in fact some nights of —60° we never even in- 
quired temperature. | 
Once we saw a drift swirl suddenly spring into the air about 
100 ft. high and sweep along the surface for a long way before 
it disappeared. 
After lunch we had interesting views of the formation and 
dispersal of fog banks which formed from time to time all along 
the Hut Point promontory. There appeared to be a line along 
which the cold Barrier air met the warmer sea ice air of the 
north side. Fog resulted, which gradually rose and spread, and 
blotted out all the land ahead of us, and then as rapidly dispersed 
to the south, leaving the whole sky and air as clear and bright 
as before. This happened again and again with no formation of 
cloud south of the ridge. 
Eventually, however, the northerly wind came over, rising, 
and forming a complete overcast beneath which one could see 
ee Western and Southern Mountains and horizon all perfectly 
clear. 
We saw to-day and yesterday, hanging round the summits of 
