[ 124 ] 
Obferved ze- 
nith diftance of 
O’s upp. limb. 
Baro- 
meter. 
Ther- 
mome- 
ter. 
Refrac- 
tion. 
Sun’s femi- 
diameter. 
+ 
DHL from 
folftice. 
+ 
Obfervations 
reduced. 
771- 
O f ff 
/ // 
/ // 
O / // 
Of// 
)ec. 8. 
74 11 L7 
29,43 
445 
3 2 > 
16 18 
0 42 26,3 
75 J 3 12,2 
I 2. 
74 3 2 2 5>4 
29,364 
47 + 
3 2 5> 2 
16 18,5 
21 3,4 
17,7 
l6. 
74 4 6 3 2 >3 
28,68 
45§ 
3 22,7 
16 18,7 
7 2,5 
21,8 
19. 
74 5 1 57.3 
29,23 
42 
3 2 9- 6 
16 19 
1 26, 1 
17,2 
24- 
74 5 1 48.5 
29,07 
40 
3 29,6 
16 19,1 
1 3 1 
i3,4 
25. 
74 5° 2 4> 2 
2 9>43 
415 
3 3 r ,2 
16 19,2 
2 56,9 
16,7 
27. 
74 4 6 i3.3 
2 9,4 2 i 
48! 
3 26,6 
16 19,2 
7 x 3>4 
i7,7 
3°* 
74 36 13.9 
30,13 
39+ 
3 34,' 
16 19,3 
J 7 9,3 
75 13 21,8 
Me 
an 
75 J 3 17,3 
Sun’s parallax 
- 8,5 
75 *3 8,8 
Nutation 
+ 7,9 
75 1 S i6 ,7 
Error of the line of collimation . 
+' 4’8 
Mean folilitial zenith diltance of the Sun’s center, December 1771, 
75 n t 2 hS 
The mean obliquity of the ecliptic refulting from 
the zenith diftances, as obferved at the two folftices 
in 1690, by applying the known latitude of the 
place, will be found to be widely different, if no 
correction be applied for the error of the inftru- 
ment. 
o / // o in 
fune, zenith diftance — 27 59 29,6 Dec. zen. difh 74 5^ 57,8 
Latitude of Greenwich 51 28 38 — 51 28 38 
23 29 8,4 
23 28 19,8 
But if the obfervations be corrected by the error 
of the inftrument, the two refults will be found to 
agree together as nearly as can be expected. 
2 7 
