of an Arc of the Meridian. 
45 1 
Observed Zenith Distance of 22 v Herculis. 
Point on the Limb, 3 0 45' South. 
Day of 
the 
month. 
Face of 
the arch, 
W. #r E. 
Plumb- 
line. 
Observa- 
tion of 
the star. 
Zenith distance 
in revolutions 
and parts. 
Zenith distance 
reduced. 
Barome- 
ter. 
Thermc 
Above 
jmeter. 
Below* 
rev. div. 
rev. div. 
0 ' rev. div. 
0 1 If 
Inches. 
0 
May 10 
E 
II 1,72 
6 0,7 
3 45 5 >*02 
3 49 5 6 , 5 i 
29.O 
— 
49,0 
11 
W 
9 28,35 
14 21,1 
4 5**75 
48,23 
28,8 
43,5 
43,5 
*3 
E 
9 56,10 
4 57 ,'' 
58,10 
54,59 
28,8 
4 °, 5 
41,0 
14 
W 
10 26,95 
15 17,8 
49. 8 5 
46,32 
29,9 
36,5 
38,5 
16 
W 
8 27,50 
13 19,0 
50,50 
46,98 
28,8 
39 ,o 
39,9 
June 5 
w 
6 24,95 
11 10,2 
44.25 
40,72 
28,4 
5°,5 
51,0 
8 
E 
8 46,08 
3 S °»7 
49 - 3 8 
45-85 
28,5 
50,5 
52,5 
11 
W 
9 3 ^ 3 i 
14 14,4 
42,09 
3 8 55 
28.5 
53,5 
52,0 
13 
E 
9 35 > 5 ° 
4 4 fi ,5 
48,00 
44,47 
28,8 
52,0 
51,5 
«4 
W 
9 3 > 82 
*3 45.7 
41,88 
3 8 ,34 
28,8 
53 5 
540 
*7 
W 
8 37*38 
13 i9> 6 
41,22 
37,68 
28,8 
57,5 
58,0 
18 
E 
11 41,16 
6 53*5 
46,66 
43 ,” 
28,8 
5', 5 
52,7 
20 
W 
8 44.15 
13 2 7>o 
41,85 
38,31 
28,9 
57-7 
58,5 
21 
E 
10 22,13 
5 34*3 
46,83 
43 , 3 ° 
29,0 
59*5 
57,6 
Observed Zenith Distance of Capella. 
Point on the Limb, 4 0 50' South. 
May 11 
E 
10 37-73 
10 29,0 
4 50 0 8,73 
4 5° 8,74 
28,9 
64,0 
65,1 
12 
W 
9 16,65 
9 18,2 
i ,55 
i ,55 
28,7 
6 3,5 
66,0 
13 
E 
9 42,06 
9 344 
7,66 
7,67. 
28,8 
574 
54 9 
*5 
W 
8 38,83 
8 394 
0,57 
o ,57 
28,7 
53-0 
58,1 
June 8 
W 
8 39,52 
8 42,5 
2,98 
2,98 
28,4 
63,2 
60,1 
1 1 
E 
9 6,74 
8 53,0 
12,74 
10,54 
28,4 
65,5 
62,5 
15 
W 
10 26,53 
10 31,4 
4,87 
4,88 
28,8 
78,0 
73 ,o 
16 
E 
8 48,20 
8 3«,5 
16,70 
16,73 
28,7 
72,0 
69,5 
21 
W 
12 24,35 
12 30,9 
6,55 
6,56 
28,8 
71,0 
68,5 
22 
W 
5 48,86 
5 52,9 
4,04 
4,°5 
28,6 
86,0 
79,1 
Operations at the Station near Clifton, the northern Extremity of 
the Arc, with the Zenith Sector. July and August, 1802. 
On the 19th of July, the observatory and zenith sector were 
erected at the station, and the angle between the spindle of 
the weathercock on Laughton Spire and a staff at Gringley on 
