( 4 ) 
Latitude 9' to the North. So the Moon's ohfervcd 
Place correded by Parallax was m 4" with South 
Latitude j' 2 %. To this i lacejby ih^Calculus of ihofe 
Numbers I have fitted to our Prefident^s Theory of the 
Moon ("but which would be improper and too long to be 
here recited) the Moon will be found to have arrived 
Augullx\\t 10^ 57' 36" apparent London. But , 
at Buenos Aires it was then computed but 7^5' 38", - 
whence the difference of Longitude refulting from this ^ 
Obfervation is 3 ** 52' or 58 Degrees, by how much Bue^ | 
nos is more Wefterly than London* I have twice re- 
peated the Calculation to be Pure to avoid error, and by 
comparingmy Chartofthe Variation with the Longitude 
thus found, it appears that in this Cafe a Ship at Seaufing- 
thofe Tables and that Chart, would by an Obfervation 
of this Occultation have fallen with greater cxac 3 ^ne(s on 
the Coaft of America^ than by any Reckoning can be pre- 
tended to be done. 
11 . A 
