But by reducing each set, taken before we arrived in the Sound,
and after we left it, by the time-keeper
and adding them up with those made on the spot,
the mean of the 137 sets, will be233° 17' 30", 5"'
Longitude by the time-keeperGreenwich rate235° 46' 51", 0"'
Ulietea rate333 59 24, 0

From the results of the last fifteen days observations of equal altitudes of the sun, the daily rate of the time-keeper was losing, on mean time, 7"; and on the 16th of April, she was too slow for mean time by 16h 0m 58", 45. There was found an irregularity in her rate greater than at any time before. It was thought proper to reject the first five days, as the rate in them differed so much from that of the fifteen following; and even in these, each day differed from another more than usual.

Variation of the Compass.

A.M.Observatory15° 57' 48-1/2"
April 4. 15° 49' 25" East.
P.M.Mean of four Needles15 41 2
5.A.M.On board the ship9° 50 49
19 44 47-1/2
6.P.M.Mean of four Needles19 38 46

The variation found on board the ship ought to be taken for the true one; not only as it agreed with what we observed at sea, but because it was found that there was something ashore that had a considerable effect upon the compasses; in some places more than others. At one spot, on the west point of the Sound, the needle was attracted 113/4 points from its proper direction.

Inclination of the Dipping Needle.

April 5th.MarkedEnd North71° 26' 22-1/2"
On board with 71° 40' 22-1/2"
balanced needle.Unmarkedand dipping71 54 22-1/2
The same needleMarkedEnd North72 3 45
at the 70 0 0
observatory.Unmarkedand dipping71 56 15
MarkedEnd North71 58 20
18th ditto 72 7 15
Unmarkedand dipping72 16 10
5th. Spare needleMarkedEnd North72 32 30
at the 72 49 15
observatoryUnmarkedand dipping73 6 0
MarkedEnd North72 55 0
18th ditto 73 11 45
Unmarkedand dipping73 28 30
22d. SpareMarkedEnd North73 28 38
needle on 73 11 0
boardUnmarkedand dipping72 53 30
Hence the mean dip, with both needles, on shore, was72 32 3-1/4
On board72 25 45-1/4