The period of our stay here seems to promise to lengthen. It is
trying--trying--but we can live, which is something. I should not
be greatly surprised if we had to wait till May. Several skuas were
about the camp yesterday. I have seen none to-day.

Two rorquals were rising close to Hut Point this morning--although
the ice is nowhere thick it was strange to see them making for the
open leads and thin places to blow.

_Friday, March_ 31.--I studied the wind blowing along the ridge
yesterday and came to the conclusion that a comparatively thin shaft of
air was moving along the ridge from Erebus. On either side of the ridge
it seemed to pour down from the ridge itself--there was practically
no wind on the sea ice off Pram Point, and to the westward of Hut
Point the frost smoke was drifting to the N.W. The temperature ranges
about zero. It seems to be almost certain that the perpetual wind is
due to the open winter. Meanwhile the sea refuses to freeze over.

Wright pointed out the very critical point which zero temperature
represents in the freezing of salt water, being the freezing
temperature of concentrated brine--a very few degrees above or below
zero would make all the difference to the rate of increase of the
ice thickness.

Yesterday the ice was 8 inches in places east of Cape Armitage and 6
inches in our Bay: it was said to be fast to the south of the Glacier
Tongue well beyond Turtleback Island and to the north out of the
Islands, except for a strip of water immediately north of the Tongue.

We are good for another week in pretty well every commodity and shall