He Found By A Great Variety Of
Observations, That The Latitude Of His Observatory At Pickersgill Harbour,
Was 45 Deg.
47' 26" half south; and, by the mean of several distances of the
moon from the sun, that its longitude was 106 deg.
18' E., which is about half
a degree less than it is laid down in my chart constructed in my former
voyage. He found the variation of the needle or compass, by the mean of
three different needles, to be 13 deg. 49' E, and the dip of the south end 70 deg.
5' three quarters. The times of high water, on the full and change days, he
found to be at 10 deg. 57', and the tide to rise and fall, at the former eight
feet, at the latter five feet eight inches. This difference, in the rise of
the tides between the new and full moon, is a little extraordinary, and was
probably occasioned at this time by some accidental cause, such as winds,
&c., but, be it as it will, I am well assured there was no error in the
observations.
Supposing the longitude of the observatory to be as above, the error of Mr
Kendal's watch, in longitude, will be 1 deg. 48' minus, and that of Mr Arnold's
39 deg. 25'. The former was found to be gaining 6",461 a-day on mean time, and
the latter losing 99",361. Agreeably to these rates the longitude by them
was to be determined, until an opportunity of trying them again.
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