[ 469 ] 
Schemmark, with telefcopes of 7 and 8f. armed with 
micrometers, it was found, when every reduction is 
made, that, according to each obfervation, the dates 
of which are given below, the horizontal parallax of 
the Sun, when at its mean diftance from the earth, 
was as is reprefented in the following table. 
Greenu 
ich. 
Bologna. 
1 
Pa 
ris. 
Stockholm. 
Up 
"al. 
Herno 
fand. 
1 75 1 * 
// 
1751 . 
// 
1751 . 
// 
1 75 1 * 
// 
1 75 r • 
// 
1751. 
// 
Aug. - - 30 
Sept. - - 13 
14 
oa. . . 3 
4 
‘+9 
9. 677 
9 - 3 M 
9 > 096 
10, i6j 
10, 504 
9 . SM 
10, 961 
Aug. 31 
Sept. 1 
*3 
14 
0£t4- 7 
9 > 753 
9 > 89S 
9 . 97 i 
10, 238 
11,075 
Sept. 13 
+ 24 
oa. 8 
9 > *34 
9 . 7*5 
11, 912 
9 > 895 
Sept. 1 
25 
Oa.4.3 
5 
6 
10, 466 
10, 504 
12, 864 
10, 085 
9 > 735 
Sept. 2 
+ 24 
2 5 
oa. 6 
9»438 
12,255 
9 > 7 r 5 
9 . 134 
Sept. 25 
27 
9 . 933 
10, 61S 
M can of all 
Mean rej. -j- 
9 > 8 9 ! 
9 , 712 
10, 186 
9,964 
10, 164 
9, 5S1 
10, 734 
10, 202 
10, 135 
9,421 
I0 > *75 
By taking a mean of all the obfervations, it follows 
that the Sun’s mean horizontal parallax is 1 o", 2 ; 
and if we rejedt the obfervations which differ moft in 
excefs from the reft, the mean will give 9,842 for 
the Sun’s mean horizontal parallax. 
Befides thefe 27 determinations, the Abbe de la 
Caille compared 41 obfervations, the mean of which 
is given in the following table. 
N°of 
Obf. 
7 
6 
3 
6 
12 
7 
Obfervations. 
The late M. Cafiini and M. Maraldi 
Mr. Delifle — at the Hotel de Glugny 
Father Beraud 
M. M. Garipuy and d’Arquier 
M. Sabatelli and Father Carcani 
M. Bofe 
Mean of all obferv. according to A. Caille 
Mean of Refults (rejetting the 2d) 
Vol. UII. 
Inftruments. 
| Places. 
0 Par. 
Quadrant 2 f, rad. 
jThury 
8, 9^2. 
Mur. circle 2 f. 
'Paris •f 
II, 5 3 * 
Refr, tel. 7 f. 
Lyons 
9, 020 
Ditto. 
Touloufe 
8, 944 
Quad. 4f. diag. div. 
Naples 
9 - 933 
Tel. of 6 and 8 f. 
Wittemberg 
ro. 9Q 9 
IO, 210 
9 > 575 
Few 
Ppp 
