[ 618 ] 
Cajaneburg = 9 50 
Calmar — — 9 oo 
Calcutta - - — 9 50 
Her nofan d o ro 
Abo =- 8 75 
Stockolm - — 11 00 — 
Stockolm - — 10 75 
Upfal - — — 725 
Upfal - - - — 6 70 
Upfal - - - 9 00 
Tornea — — 12 00 — 
Tornea — — 14 00 — 
Madrafs - — 9 70 
G. Mount -23= 8 50 
Tranquebar = 8 75 
The mean of thefe fifteen 
refults gives the Sun’s 
parallax— 9", 56 j and if 
we reject four of them, 
> which differ the moft 
from the reft, the mean, 
of the remaining eleven, 
gives the fun’s parallax 
= 8", 69. 
; . . ' ■■ 
However, on calculation by another method, I 
find fo great an agreement between them, on the 
fuppofition that the Sun’s parallax is — 8" 4, that I 
have determined the Sun’s parallax from them alfo, as 
a corroboration of the Sun’s parallax being verv nearly 
the fame as found by the obfervations of the internal 
contact; and this is done in fuch a manner that each 
obfervation of the total duration, at any one place, 
determines the Sun’s parallax independent of any ob- 
fervation of the fame duration made at any other 
place, and in which an exadt knowledge of the lon- 
gitude, of the latitude, and of the time at the place 
of obfervation is not required j all that is neceffary to 
be known is the time of duration from the internal 
contad: at the ingrefs, to the internal contact at the 
egrefs, and that the clock moved equably during the 
