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النشر الإلكتروني

21ft.

22d.

23d.

24th.

25th.

26th.

A thick fog towards evening from the S. E. -very cloudy at night.

Thermometer 63° in the morning, rose to

79°.

Thermometer 60° at fun rife, rofe to 84°.

Equal altitudes of the Sun.

A. M. 8h 50′ 17′′. P. M. 3a 7′ 53′′.

Doubtful 3 or 4 feconds.

Thermometer 61° at fun rife, rofe to 62°. -Cloudy great part of the day with a violent wind from the S. E.

Thermometer 58° in the morning, fell to 56° in the afternoon, rain with a strong wind from the S. E.

Thermometer 56° at fun rife, rose to 70°. -Flying clouds great part of the day.

Emerfion of the 3d fatellite of 24 obferved at 71' 3".Belts pretty diftin&t, magnifying power 120.

Difcovered that the clock was confiderably out of beat, owing to the poft to which it was faftened being moved by people inadvertently leaning against it in the tent:-The poft being planted in loofe fand, no better foundation to be had.

Thermometer 50° at fun rife, rose to 60°.

Equal altitudes of the Sun.

A. M. 8h 44′ 23′′. P. M. 3h 13' 0".

Emerfion of the 4th fatellite of 4 obferved at 8h 8' 57". -Evening remarkably fine; magnifying power 200.-Although the fatellite was too vifible to be mistaken at the time above noted, it certainly had not fully recovered its luftre

27th.

28th.

29th.

luftre at 8h 35', it emerged clofe to the 2d fatellite, which gave me an excellent opportunity of judging of its brightnefs.

Thermometer 54° at fun rife, rose to 68°.

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Emerfion of the 1ft fatellite of 4 obferved at 10h 53' 10". -The planet very tremulous, and the belts scarcely dif cernible-magnifying power 120.

Thermometer 61° at fun rife, rose to 76°. -Cloudy in the afternoon.

Thermometer 63° at fun rise, rose to 81°. -Thunder and rain in the morning.

Equal altitudes of the Sun.

A. M. 8 42' 54". P. M. 3 14' 0".

Thermometer 50° at fun rife, rose to 75°.

30th.

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The obferved times, and distances, of the 's and D's nearest limbs.

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Thermometer 53° at fun rife, rofe to 86°.
Thermometer 57° at fun rise, rose to 87°.

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2d.

3d.

4th.

sth.

6th.

Immerfion of the 3d fatellite of 24 obferved at 8h 1 17. -The evening very fine, and the fatellite loft its luftre, and disappeared more gradually than I ever faw it before, -Magnifying power 120.

Emerfion of the fame fatellite observed at 11h 5′ 19′′. -The planet was low, and tremulous, and the belts very indiftinct, magnifying power as above.

Thermometer 61° at fun rife.

Emerfion of the 2d fatellite of 4 obferved at 6h 30' 51". –The belts were well defined, but the fun having been fet about 15 minutes and the day light being very strong, on which account the obferved time might be diminished 10 or 15 feconds with propriety, magnifying power. 120.

Thermometer 66° at fun rise, rose to 78°. -Cloudy all day with heavy rain, and thunder at night.

Thermometer 63° at fun rife, rofe to 82. --Cloudy all the forenoon.

Thermometer 64° at fun rife, rose to 84°.

Equal altitudes of the Sun.

A. M. 8 39′ 11′′. P. M. 3° 17′ 27′′.

Emerfion of the 1ft fatellite of 4 observed at 7h 13′ 19′′. -Belts well defined, magnifying power 120.

Thermometer 61° at fun rife, rofe to 85%.

Equal

Equal altitudes of the Sun.

A. M. 8h 40' 57". P. M. 3 15' 48".

7th. Thermometer 62° at fun rife, rofe to 83°.
Thermometer 65° at fun rise, rose to 85°.
Thermometer 70° at fun rife, rofe to 90°.

8th.

9th.

Ioth.

Equal altitudes of the Sun.

A. M. 8h 23' 52". P. M. 3° 32′ 58′′.

Emerfion of the 2d fatellite of 2 obferved at 9h 9′ 28′′.
-A little hazy, magnifying power 120.

Thermometer 62° at fun rife, rofe to 87°.

Equal altitudes of the Sun.

A. M. 8h 57' 6". P. M. 2h 59′ 48".

Took down and packed up the inftruments.

Rate of the Clock's going at the south end of Cumber-

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Results of the observations, made for the longitude, at the fouth end of Cumberland Island.

March 13th. Emerfion of the 1ft fatellite of 24 5 26

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291

15th. do. . 2d

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17th.

By a lunar obfervation

5 26 59

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By a mean of the 3 eclipfes of the 1ft fatellite of 44, the longitude of the fouth end of Cumberland island comes out 5h 26′ 17′′ weft from Greenwich: By a traverse from the obfervatory at Point Peter across the found, the difference of longitude between that station, and the fouth end of Cumberland ifland is 10" nearly, which added to the longitude above, will give 5 26 27" for the longitude of Point Peter; which is 7" lefs than by obfervation. But as there were more obfervations on the eclipfes of the ift fatellite taken at Point Peter, and a better agreement, that determination is entitled to the most weight.-If therefore 2′′ be deducted from the longitude of the obfervatory at Point Peter as determined by obfervation, and 5" added to the longitude of the fouth end of Cumberland island as deduced from obfervation, the longitudes will stand as below.

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Thefe longitudes are probably as correct as they can be had by obfervations, the refult of which depends upon a theory not yet abfolutely perfect but these, with other deductions of a like nature in the foregoing work, may be further corrected when compared with correfponding obfervations, or others made about the fame time, at obfervatories whose pofitions have been accurately fettled. The latitude of the fouth end of Cumberland Island has already been ftated at 30° 43′ 13′′.8 N.

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