I 'ySm, at Part^, Hence the Longitude of the Cape will be 
fouad hat 1 4 degrees and half at moft to the Eaft of Paris 
fo that thefe 2 Obfervations will differ in the reliilt about a 
quarter of an hour ; which is a little too much. However 
there are Tome reafbns that ftem to argue for this latter Lon- 
gitude rather than the former ; for it is much eafier to ob- 
than to wait upon the firft appearance of a Star Eclipfed: and 
tis probable that the Satellite might, in the latter time, be feve- 
ral minutes Emerged out of the ihaddow, when they might 
firft perceive it ; but they could not but fee the application 
to the Body of Jupiter in the former, if wc may fuppofc 
their Telefcopes fb good as they are iaid to be ; And that the 
Cape of Good Hope is not more than an hour to the Eaft of Pa- 
is proved by the conftant eonfent of our Navigators, who 
find by their Reckonings that the Ifland of St. Helem is about 
2 2 or 23 degrees of Longitude to the Weft ward of the Cape : 
( and that Sailing both backward and forwards tis the fame, 
which takes away the Objection of Currents ) ' now by ac- 
curate Obfcrvations made at St. Helenay and compared with 
others made in Europe 2it the fame time, the Longitude of that 
Ifle is certainly about 8 \ degrees to the Weft' (X Paris: It fol- 
lows theretore that the Cape cannot be much more than 14 or 
1 5 degrees to the Eaft of P^r^ ; and undoubtedly it muft be 
left than i8,for } degrees is much too great an Errour to be 
conamitted in fa flaort a diftancc Sailing. 
ferve what becomes of a luminous 
