( «4* )

alias Lucc ejus nimia obfulcarcntur j -ac quamvis Coloribus tingantur, ac Jo-vis Limbus parum nitidus videatur, tamen cum de momento amiffx vel rc-cuperatx Lucis unice agatur, sufficit eas Lumine quantum fieri patiit auctasin oculos certius incurrere.

n, 214. f. 237- The Eclipses of the Fnst Satellite of “Jupiter are found by the Royal Acade-my at Paris, in Alcertaining the Geographical Site of the Principal Ports ofFrance, almost: Infiantaneous , and with good Teie'copes dilcernable almost tothe very Opposition of Jupiter to- the Sun. So that, could the Satellites beOWerved with Telefcopes Manageable on Shipboard , a Sbip at Sea mighc beenabled to find the Meridian ffie was in to very great Exactnefs, beyondwhat we can yet Hope to do by the Moon, tho’ She leem to aftord us theonly Means Practicable for the Scatnen. However before Saylors can makeIlse of the Art of Fbuling the Longi tu de, it will be requisite that the Ccasi ofthe vahole Ocean be siris Laid downTruIy, for which Work this Method by, the Satellites is mufl Apposite.

Xotie. and lat-os Derby ; bM^.Flamsteed.n. 55 .f. 1102,.1 106. ».III. f.

237.

Lat. of E Aon.n. 7 6.f. 2272.

Long. and Lat.

e/Townlcy.-n. 127. f. 66y.

Lat. of Tre-, dagh. n. 1Ä4.f- 749 -Long. of Ox-ford and Dant,zick; by Mr.Halley. ».12y

f. 724.

\'ld. /•<», Caf.

-IV. h. EXll.

VII. The I.ongitudc of Derby- front Landen W. is 5 or 6 min. the Latitudeyi° 5 -7’ or y8'.

VIII. Ectonite, in Com. 'Northamptoniano, Lat. yi° i ys

IX. Torvnlcii in Com. Lanc. Latitudo Observata ( ut scribit D. Tomileius)53° 44' ', Longitudo a Meridiano Londincnsi 9. circiter Icr. hor. ad Occasum.

•X. .The Latitude of Trcdagb in Ircland, is y 3 0 4.0L

XI. Having carefully 'considered the Parallaxe s öf the Moon in the Oblcr-vations of the Occultation of Mars, Aug. 2.1. 1676. at Oantffck_ and Grcemvicb,I find from the Immersion the Difference ot Meridians between Grccmvich and■ Oxford 4' S?"-> between Grccmvich and Dautffclg i* 1 14^ yo w : Ry the Emer-son the First of the(e Differcnces is found 4' 59", the latrer il> 14' 41" ;which near Agreement ffiews the Exactness of the Oblervations.

Long.of Paris; XII. i. Observationes D. Flamstcedii circa Lunte Eclipsin Jul. 7. st. n. 1 67 f.

Clim moliris in Regio Obfcrvatorio habitis magna cum voluptate contuli. Exvi d. iis . caf. iis quippe Differentiam Meridianorum, quam olim, nostrarum OblervationumIV. §. XLV. Collatione, Minutorum 11 definieram, nunc decem novis Comparationibus. eandem intra pauca Secunda video confirmari.

Obs er-

st