The true longitude o f the place is 18“ 23' 15" (fixth column).
From -whence it appears, that, in our run from Greenwich
to the Cape, the watch wou ld have led us into an error only
o f 3' 15" (feventh column), o r three miles one quarter; or had
varied 13" o f time (eighth column), in fou r months twenty-
three days (ninth column), the period between our leaving
Greenwich and our arrival at the Cape. As the Greenwich
is the lateft error, the tenth, eleventh, and twelfth columns
w ill be the fame w ith the feventh and ninth.
But, on the 22dof February, 1777 (firft column), at Queen
Charlotte’s Sound, New Zealand (fecond column), the daily
error o f its rate was found to be 2",91 (third column).
T h e longitude o f this place, according to the Greenwich
rate, is 175° 25' (fourth column). But ha vin g found, at the
Cape, that it had altered its rate from a daily error o f i ',2 i,
to 2',26, the longitude corrected by this new rate is found
to be 174° 54' 23" (fifth column). T he true longitude o f the
place being 174” 33' 31" (fixth column ); it appears, that, in
ou r run from Greenwich to New Zealand, the error would
have been only 1“ 1' 29" (feventh column), or fixty-one
miles and a half, even i f we had not had an opportunity o f
correcting its daily e r ro r ; or, in other words, that the watch
had varied 4'6" (eight column), in eight months eleven days
(ninth column). But the longitude as given by its new
rate, leaves an error o f only 30' 54" (tenth column), near
thirty-one miles, or, in time, 2' 3", 6 (eleventh column);
which has been accumulating during our run from the
Cape to New Zealand, or in three months, 28° (twelfth column).
The thirteenth and fourteenth columns require no
explanation.
TABLE of the Rate and Error of Mr. Kendal’s Watch, on board the Refolution.
IH D
1 M
I , :}| 'mB
'lull-- H
:] 111
III
i 1
1