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The Therm is again below zero. Bear
sickness continues. Mr. Wilson's
scurvy shows symptoms of a relapse.

Tuesday 10

The cold intense and the atmosphere
of that peculiar cleaness which
makes me often in this Artic region
think that I can see the cold.
The Therm is already below zero
while but two days ago, (Saturday
at [blank space]) it stood at [blank space].
We have thus undergone a change of
atmospheric temperature of [blank] degrees
in [blank] hours. It is a mistake to
suppose that sudden and extreme
alterations of temperature do not
occur in these high latitudes. "The warm
S.E." as it is called, sometimes raised the
mercury from -40° to + 7° in three hours.
[blank] minus [blank] is not cold
in a true winter sense, that is as comared
with our -62°, and continued
daily means of -50° & 40° but to us
gauging from an almost summer warmth
(I mean water hardly freezing) it is hard to
stand. The operations of cutting [?]
forging bolts & so on work badly.

I reared to day my long
spirit standard, with a full convition
that it will record the greatest criti-
=cally determined extreme of low
temperature ever experienced - (reported).
The Therm is placed on the terrace
thoroughly exposed but protected from
wind and sun. A series of compared
Therms, mercurial & spirit, are placed
along side to determine the relation
of this outside temperature to that
observed from our main rigging, and