ti 
L O^J J 
May 20, Mr. Lukens fent up the agronomical 
“ quadrant, belonging to the Eaft-Jerfey proprietors, 
of 2^ feet radius ; which I placed in the meridian, 
and obferved the following zenith diftances of ftar^, 
“ to difcover the error of . the inflrument, if any it had. 
Obfervations with the face weuwards. 
0 / f/ 
Highcft ftar in the kg of / f 3 ^ 2036 6 
Bootes. 1 4 ^0 36 0 
b 5 20 36 0 
Ditto with the face eaflwards. 
a / /f 
f 6 20 33 ^5 
Same liar. 7 ■ 20 3? 54 
t 8 20 36 0 
Atdlurus. 
' May 31 19 46 18 
June I 19 46 14 
2 19 46 20 
5 19 46 22 
1 
Ardlurus. < 
June 6 '• 19 46 5 
7 19 46 8 
8 19 46 13 
10 19 46 u 
The bright ftar in the Crown. ^ 
Zexi. dill, face of quad. eall. 
o t n 
f June 6 12 39 34 
Zenith diih with face of quadrant weilwards 
o f ir 
13 39 36 
5 12 39 27 (_ 10 12 39 18 
“ From a mean of the above 1 8 obfervations, the 
‘‘ error of the quadrant is to be fubtradled from 
“ the zenith diftance, when the face is weftwards, and 
“ added when it is eaftward. 
Zenith diftances of the Sun’s limbs obferved, and the latitude ot the 
obfervatory deduced feparately from each. 
Sun's up. limb ; dill, a zenith. Lat, hence deduced. 
9 
/ 
// 
0 
/ 
/} 
0 
/ 
If 
0 
/ 
// 
May 
18 
48 
4 .? 
40 
io 
17 
June 8 
17 
29 
33 
40 
9 
48 
26 
18 
38 
i8 
, 40 
10 
10 
9 
17 
24 
35 
40 
9 
47 
27 
18 
28 
21 
40 
10 
10 
10 
17 
20 
5 
40 
9 
49 
June 
I 
17 
43 
47 
cloudy and doubtful 
1 1 
17 
15 
59 
40 
9 
52 
2 
17 
3b 
16 
40 
10 
2 
14 
17 
6 
9 
40 
9 
58 
4 
17 
21 
51 
40 
9 
52 
Doubtful 6 
17 
8 
53 
40 
9 
34 
7 
17 
3 
21 
40 
^9 
47 
12 
16 
41 
10 
40 
10 
H 
13 
16 
37 
45 
40 
10 
8 
10 1 
Mean of the above obfervations f 
of G’s upper limb j 
Mean of the 5 obfef. of O ’si. limb 40 9 51 
Sun’s ]. limb j dift. a zenith. Lat. hence deduced. 
Mean of the above 5 offer- J 
vations of © ’s lower limb j ^ ^ 
The mean of both, viz. 40 9 56 is taken for the latitude of the obfervatory. 
VoL. LIX. R r " The 
