go Mr . Piazzi’s Calculations of Longitude 
feme correction ought to be made to the parallax and to the dia- 
meter of the moon, as well as to the diameter of the fun ; but 
on the one hand this would not make any alteration in the 
difference of the meridians which I have found ; and on the 
other I thought proper to make ufe of thofe elements th 
Nautical Almanack furnilhed me with, that being a work the 
moft perfect of the kind that ever appeared, and to which all 
aftronomers and navigators ought to pay the greateft attention. 
In fine, I compared the moon’s longitude in conjunction 
deduced from the eclipfe with the new tables of the moor 
correCfed by Mr. Mason, and found the longitude by thofe 
tables to be 2 s. 14 0 if 6 /7 ,4, and the latitude to be if 
The error then of the new Tables is + 1 i",7 in longitude, and 
-f in latitude; but M. de la Lande having lately fent 
to me from Paris the place of the fun, calculated with the 
new Solar Tables (a moft ufeful improvement which M. de 
Lambre has, with much ingenuity, deduced from your obfer- 
vations) I find the error in longitude to be + 27^,4, the fun’s 
place being 2 s. 14 0 i 6 / 39 7 ,o at 20 h. $ 8 ' 4 7", 3. 
The following table contains the obfervations of the eclipfe, 
and the refults deduced from thence. The firft vertical column 
fhews the name and place of the obfervers ; the two next ver- 
tical columns contain all thofe obfervations which have been 
made, in apparent time ; the other columns fhew the refults, 
viz . the fourth column, contains the true conjunction in appa- 
rent time ; the fifth column contains the longitude of the 
moon in conjunction, which being always the fame, needs 
not to be repeated under every perpendicular column ; the fixth 
column contains the latitude of the moon, which, as it depends 
upon the manner of obferving the two phafes, is fubjeCt to 
2 fome 
