[ 33 ^ ] 
There are 12 places at which the total duration was 
obferved, three of thefe had a northern parallax of lati- 
tude at the middle of the tranfit, the other nine had a 
fouthern parallax of latitude ; let the apparent lead: 
didance of the centers at each place of obfervation be 
found, by the following method, let thefe be com- 
pared together, and we fhall have the parallax of the 
Sun refulting from them. For this purpofe I have 
computed the apparent lead didance of the centers at 
the 8 following places, and have compared them with 
the apparent lead didance of the centers at the four 
following places, and from each comparifon I have 
computed the parallax of the Sun, and they are as 
in the following table. 
4 
Cajan. 
Calm. 
Tobol. 
Torne. 
LJpfal. 
Stoko 
Abo. 
Herno. 
n 
// 
11 
1/ 
/ 
'! 
11 
// 
Tranqucbar 
8.48 
8.45 
8.54 
8.31 
8.48 
8. 
2 C 
8.52 
8. 
42 
Madrafs - - 
8. 79 
8. 76 
8 - 93 
8. 6j 
3. 79 
8. 
5 C 
8. 82 
8. 
73 
G. Mount - 
8. 42 
8. 38 
8.45 
8. 24 
8. 42 
8. 
12 
8.45 
8. 
35 
Calcutta - - 
8. 69 
8. 65 
8. 8i 
8- 43 
8. 68 
8. 
35 
8- 73 
8. 
61 
0 ’sP.mcan. 
,8. 59 
8. 56 
8.68 
8. 4c 
8. 59 
8. 
29 
8.63 
8. 
53 
0’s Par, 
mean. 
11 
8. 42 
8. 74 
8* 35 
8. 62 
The mean of thefe 32 comparifons gives the Sun’s 
parallax — 8", 53.' This very near agreement with 
the former determinations is fomewhat furprizing, 
when we confider the fmallnefs of the bale from 
which they are computed, the greated fcarcely ex- 
ceeding 20 " of an angle ; but we are alio to cond- 
der, that the apparent lead didance of the centers 
may be found, from the duration obferved, to a very 
great exadtnefs, and nothing affecds the accuracy of 
it, but the errors in the obfervation. Let us fuppofe 
then that an error, of 6" in time, happened in each 
of 
