On the 13th, at two o'clock a. m. it fell calm. Of this we took the opportunity to hoist out a boat, to try the current, which we found to set N.W. near one-third of a mile an hour. At the time of trying the current, a Fahrenheit's thermometer was immerged in the sea 100 fathoms below its surface, where it remained twenty minutes. When it came up, the mercury stood at 32, which is the freezing point. Some little time after, being exposed to the surface of the sea, it rose to 33-1/2, and in the open air to 36. The calm continued till five o'clock in the evening, when it was succeeded by a light breeze from the S. and S.E., with which we stood to the N.E. with all our sails set.
Though the weather continued fair, the sky, as usual, was clouded. However, at nine o'clock the next morning, it was clear; and we were enabled to observe several distances between the sun and moon. The mean result of which gave 39° 30' 30" E. longitude. Mr Kendal's watch at the same time gave 38° 27' 45" which is 1° 2' 45" W. of the observations; whereas, on the 3d instant, it was half a degree E. of them.
In the evening I found the variation by the mean of azimuths taken with Gregory's compass to be 28° 14' 0"
By the mean of six azimuths by one of Dr
Knight's 28 32 0
And by another of Dr Knight's 28 34 0
Our latitude at this time was 63° 57', longitude 39° 38-1/2"
The succeeding morning, the 15th, being then in latitude 63° 33' S., the longitude was observed by the following persons, viz.
Myself, being the mean of six distances of
the sun and moon 40° 1' 45" E.
Mr Wales, ditto 39 29 45
Ditto, ditto 39 56 45