[ 6i 7 ] 
which numbers and refult are fet down in number 
iff. and fo of all the reft in the table. 
By taking a mean of the refults of thefe fifteen 
obfervations, the parallax of the Sun, on the day of 
the tranfit, comes out =: 47, and by rejecting 
the 2d, the 8th, the 12th, and 14th refults, which 
differ the moft from the reft, the Sun’s parallax, on 
the day of the tranfit, by the mean of the eleven 
remaining ones is — 8", 52. 
We have received from Sweden leveral obfervations 
of the total duration of the tranfit from the internal 
contadl at the ingrefs to the internal contact at the 
egrefs, and alfo the obfervation of the fame duration 
by M. Chappe at Tobolfk in Siberia, and by fever al 
perfons in the Eaft Indies: but the differences between 
thefe durations are too fmall to determine with any 
accuracy, the Sun’s parallax from them, by compar- 
ing the duration at one place with the duration at 
another place. The greateft difference between them, 
and the duration at Tobolifk (which is the leaft) a- 
mounting only to 2' 50", and the leaft difference 
amounting only to 1' 4" : in which fmall quanti- 
ties the unavoidable errors of obfervation muff; bear 
a conffderable proportion, and yet by comparing fif- 
teen total durations obferved at different places with 
the total duration obferved at Tobolfk, I find the 
following refults of the Sun’s parallax from each 
ef them. 
Cajaneburg 
