C 399 ] 
LXIII. A?t Account of a printed Memoir , in 
Latin, prefented to the Royal Society , in- 
tituled, De Veneris ac Solis congreftu 
obfervatio, habita in aftronomica fpecula 
Bononienbs Scientiarum Inftituti, die 5 
Junii 1761. Audore Euftachio Zanotto, 
ejufdem Inftituti Aftronomo, ac Regis 
utriufque Londinenfts et Berolinenfts Aca- 
demic Socio. By Nathanael Blifs, Savilian 
Profejfor of Geometry , and F. R. S. 
Read July 1,. rnr^ HE planet Venus hath been fo fel- 
dom obferved in thofe circumflances, 
which are of the greateff ufe in determining fome of 
the moft eiiential elements of its motion, that every 
fuch obfervation, made by an accurate affronomer, 
cannot but be very acceptable to the public. 
At Bologna, on the night preceding the day of the 
tranlit, the weather was very unfavourable ; but early 
in the morning, the clouds, which covered the whole he- 
mifphere, began to break, and were driven off towards 
the horizon, by a gentle wind : fo that the obfervations 
were retarded only during the fpace of about half an 
hour. Father Frifi, profeffor of mathematics at Pifa, 
and Signors Mathenci and Marini, affifted in making 
the observations ; the two latter obferving, in the upper 
room of the obfervatory, together with Mr. Profedor 
Zanotti; and Father Frifi, accompanied by the two 
profeffors of mathematics Signors Caiali and Canter- 
zani, in a lower chamber. 
4 
S. Zanotti, 
