i778- But by reducing each fet taken before'
« — * w e arrived in the Sound, and after
w e le ft it, b y the time-keeper, arid „ , ,,
17 50
adding them u p w ith thofe made
on the fpot, the mean o f the 137
fets w ill be | - - -
Longitude b y th e ! Greenwich rate - 2 3 5 ° 4 6 ' 5 1 " , o'"
time-keeper ( Ulietea rate - 233“ 59' 24", o'"
From the refults o f the laft fifteen days obfervations o f
equal altitudes o f the Sun, the daily rate o f the time-keeper
was lofing, on mean time, 7" ; and on the idth o f April, ih e
was too flow for mean time, b y i6 h o” 58", 43;. T he re w a s
found an irregularity in he r rate, greater than at any time
before. It was thought proper to reject the firft five days,
as the rate in them differed fo much from that o f the fifteen
fo llo w in g ; and even in thefe, each day differed from
another more than ufual.
% Vdr iat ion o f the Compafs.
a k J S P M : * 7 Obfervatory, r i c ° <7/ 4.8k" 7
^ ¿ P . M . i Mean o f four needles 1.15° 4 i ' | | \ H 49' * 5 " “ •
5th. r A . M . 1 O n board the Ihip, r ig ° 50' q/.f' , .
17th. ¿ P . M . i Mean o f four needles t i-g 38' 4 6 '' 1 ^ 37»
• T h e variation found on board the ihip, ought to be taken
fo r the true one.; not only as it agreed w ith what w e ob-
ferved at f e a ; b u t becaufe it was found, that there was
fomething afhore that had a confiderable effeift upon the
compaffes; in fome places more than others. At one fpot,
on the Weft point o f the Sound, the needle was attracted
i i f points from its proper direction.
7 Inclination
Inclination of the dipping Needle. 1778.'
April $th. On board with ba- f Marked 7 End North r 7 1® 26
lanced needle ¿ Unmarked J and dipping ¿ 7 1 ° 54
T h e fame needle at T Marked 7 End North r 72'
the-obier-vatory £ Unmarked 3 and dipping it 7 1° 56
- 1 8th. Ditto - - . j Matked 7 End N o r th r 7 1 ° 58
L Unmarked 5 and dipping t 7 2 0 16
5th. Spare needle at C Marked 7 End North r 72s 32
the obervatory I Unmarked J and dipping ,¿ .73'
18*. Ditto — 5 * f rked Eud North ] 72° 1
I Unmarked J and dipping <■ 730* 28
22d. Spare needle on r Marked 7 End North 073° 28
l l l - \ 40" * 2f "
1 5 " \ 7° ’ | ¡ g
7 „ , „
10 - If} 7 X5
3p" 1 72° +9' r5"
3 0 " ? 7 3 ° ” ' 4 5 "
jpaic uccuic 0111 marKea 1 j&na iNortn C 7 3 '28 38” 7
board - - c Unmarked j and dipping £ 72° 53 ' -30" J ^ 1 1 0
Hence the mean dip, with both needles, on ihore, was 1 72® 3 2 '
O n board - - . . . . . 72- +Ij "
Th is is as near as can be e xp e ffe d ; and fhews, that w hatever
it was that affected the compaffes, whether on board
or afhore, it had no effedt upon the dipping needles.
"Tides.
It is high-water on the day s o f the n ew and fu ll moon, at 12k
so". T h e perpendicular rife and fall, e igh t feet nine inches; •
w h ich is to'be underftood o f the day-tides, and thofe which
happen two or three days after the fu ll and new moon.
T h e night tides, at this time, rife near two feet higher. This
was ve ry confpicuous d uring the fpring-tide o f the fu ll
moon, w hich happened foon after our arrival; and it was
obvious, that it would be the fame in thofe o f the n ew moon,
though we did not remain here long enou gh to fee the
whole o f its effeft. •
Some circumftances, that occurred daily, relating to this,
deferve particular notice. In the cove where we got wood
X x 3 and