[ 488 ] 
others made in England and at the Cape, to be 
4 h . 1 2'. 38" to the Eaft of Greenwich : and this deter- 
mination is exadlly confirmed by Mr. Pringre’s com- 
parifon of the fame eclipfes. The obfervation of the 
occultation of a fixt Ear gives the longitude 6 " or 7" 
greater. In the Philofophical Tranladtions, and even 
in the former part of the volume of the Memoirs of 
the Academy of Sciences for 1761, we find the inter- 
nal contadl was oblerved at Rodrigues at o h .34 / -47 
And yet in the memoire on the Sun’s parallax it is laid 
to have happened at 0 ^. 36 ' . 4 . 9 " . Upon comparing 
this latter with the time by the clock, it fhould leem 
that Mr. Pingre had committed a miftake in fubtradl- 
ing the error of his clock inflead of adding it. But he 
has no where mentioned any reafon for this difference. 
Gottingen, where the celebrated Mr. Mayer ob- 
ferved the firft internal contadl at 20 h .58 / .26 // 
to the Eaft of Paris is 30' 16" or 3*/ 33^ to the Eaft 
of Greenwich. 
The Abbe de la Caille has placed Bologna 
to the Eaft of Paris : By comparing the obfervations 
of the tranfit of Mercury, I find, by a mean of three 
refults agreeing very nearly together, that Bologna is 
45'. 1 5" to the Eaft of Greenwich. Mr. Zanotti ob- 
ferved there the 2d internal contadl at 2i h .o4 / .34 // . 
But as he ufed a refradling telefcope of 2 4 feet, and 
as two other obfervers with telefcopes of 10 and 22 
feet faw the contadl 24" later, I fhall fuppofe it to have 
happened at 2i h 4' 58 // . 
At Florence, the internal contadl was obferved 
with a refledlor of more than 4 feet at 2i h *4 •2S / by 
Father Ximenes. The longitude of this place is 
34' 48" to the Eaft of Paris, according to the table in 
theConnoiftance des Mouvemens Celeftes, or 35'. 58" 
according 
