We had the winds from the north-east with squalls and hazy
weather, until the 29th, when it backed round to the westward
again, and the weather became fair. After the time-keeper was
taken from the Sirius, I kept an account of the ship's way by my
own watch, which I had found for a considerable time, to go very
well with Kendal's; I knew it could be depended on sufficiently
to carry on from one lunar observation to another, without any
material error; for although its rate of going was not so regular
as I could have wished, yet its variation would not in a week or
ten days have amounted to any thing of consequence; it was made
for me by Mr. John Brockbank, of Cornhill, London, upon an
improved principle of his own. The lunar observation, which I
never failed to take every opportunity, and which Lieutenant
Bradley also paid constant attention to, gave me reason to think,
by their near agreement with the watch, that it continued to go
well. On the 1st of December our longitude, by account, was
36° 42' east; by the watch 36° 48' east; and by distance
of sun and moon 36° 24' east: latitude 40° 05' south, and
the variation of the compass 29° 40' west.

For three successive days both Mr. Bradley and myself had a
variety of distances, by which our account seemed to be very
correct. I now determined (if I could avoid it) never to get to
the northward of latitude 40° 00' south, and to keep between
that parallel and 43° or 44° south. After the 3d, I
found, by altitudes taken for the watch, that we went farther to
the eastward than the log gave us, and no opportunity offered for
getting a lunar observation to compare with it until the 13th,
when both Mr. Bradley and I got several good distances of the sun