November. ^at01)' on f f ° re would, beto little purpofe. The latitude of the harbour
’---- ■---- ' was f°und to be one minute .fouth of Captain Cook’s calculation, or
45°45'3®'- His. determination is, however, moft likely to be correft,
as mine was deduced from one day’s obfervation only, with an artificial
horizon; and, having agreed fo nearly, any further inveftigation I deemed
unncceifary. .
The mean refult of ten fets of altitudes taken between the gth and
16th of November, for afeertaining the longitude of the chronometer,
and to form fome judgment as. to its rate of going, were as, follows, viz.
By the Portfmouth rate it placed Anchor Illand Harbour
ijilongitude - - - - ■ - 166° 4 2 'eg",
By the Cape rate-, - , \ - - . „ . . 16^-55' 12"
By King George the Third’s Sound rate - - : 167° 7' 40"
The true longitude: as affigned to that place by Captain
Co ok. : - - - '. .
Makes the Portfmouth rate eaft of the truth -
Cape rate ditto - . . . .
King George the. Third’s Sound ditto - „
Mr. Arnold’s watch on board the Chatham gave, the longitude,
166015'54"
2 6 e t f
i ° 3 9 'i 8";
h h
of. Facile Harbour, according to the Cape rate 165° 48' 52"
Efteeming the true longitude of Anchor Illand harbour to be l66°rig
54", the chronometer was fall of mean time at Greenwich on the 16th at
noon 26' 34"; whence it appeared, that it had gone nearly at mean time,
fince leaving King George the Third’s Sound, and that its; having differed
from Captain Cook’s affigned longitude of Van Dieman’s land was- oc-
cafioned by its not having gained at the rate we allowed, and of courfe
the longitude of King George the Third’s Sound was not wrong. By
the refult of our obfervations here, it gained on an average about 3" per
day, which error I {hall allow, until a better opportunity o f afeertaining
its rate may offer.
The variation of the magnetic needle, obferved on ffore by three different
compaffes in 18 fets; o f azimuths,, varied from 1 10 17' to 17° 26',
the mean refult of which, was. 14° 55'45" eaft variation. The. vertical inclination
R O U N D T H E W O R L D ,
clination of the fouth point of the magnetic needle on board was found
to be-—
Marked end North face Eaft - - - - 70° 3'
Ditto; North face Weft - - , . . gg° 8'
Ditto South face Eaft - , . 70° 3'
Ditto South face Weft- ' - - - - 69° 35'
Mean inclination of the fouth point of the dipping needle - 69° 43'
As we increafed our diftance from the land, the n .w . wind increafed
alfo. A fwell at this time coming very heavily from the s.w. made me
apprehenlive the wind would ftiift round, and blow hard in that direftion.
The ftate of the mercury in the barometer, the gloominefs of the weather}
and every other appearance of the evening, indicated more wind from
the s:w. than would be pleafant to be caught in on this dreary coaft:
we therefore fleered fouth, under as much fail as we; could carry, and
made the neceffary fignals to the Chatham for the- like purpofe. Our
lofty canvafs was, however, fpread a very ffort time before it blew, fo
hard a gale, that we were under the neceffity of clofe reefing the top-
fails, getting down the top-gallant yards, and ftriking the mails. The
night was extremely dark; which, by ten, prevented our feeing the Chatham.
The wind was now at N. n .w . very happily not on the Ihore, as
by- three in the morning its increafed violence obliged us to furl the top-
fails. A t this moment we were alarmed by finding fix feet water in the
hold, which the ffip felt exceffively, labouring much by being prelfed
down forward with that weight o f water. This very unpleafant circum-
ftance obliged us to feud direftly before the wind and fea, for the purpofe
of freeing the ffip ; when, by receiving much water in the wade,
the calks of beer and water flowed upon deck, broke from -their- fecuri-
ties - and were ftove to pieces. The caufe of fo much water in the hold,
at firft a matter of great furprize, was foon accounted for. The hand
pumps had been, and were ftill, choaked; which induced the carpenter
to believe, that becaufe they difcharged no. water there was none in the
ffip. This, in all probability, had governed his examination all the latter
part of the time we had been in port, and produced an accumulation that
might have been attended with the'.moft ferious- confequences, had not
Wednef. 20»
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