An Account of the Measurement 
460 
Observed Zenith Distances of 45 d Draconis. 
Point on the Limb , 4 0 40' North. 
Day of 
the 
month. 
Face of 
the arch, 
E. or W. 
Plumb- 
line. 
Observa- 
tion of 
the star. 
Zenith distance 
in revolutions 
and parts. 
Zenith distance 
reduced. 
Barome- 
ter. 
Therm < 
Above. 
rmcter. 
Below. 
rev. div. 
rev. div. 
0 ' rev. div. 
O / .// 
Inches. 
O 
O 
Sept. 8 
w 
9 57-57 
9 21,1 
4 40 0 36,47 
4 40 38,53 
28,2 
52,0 
54,0 
*5 
w 
7 29-48 
6 47-3 
40,98 
41-05 
28,9 
63-5 
66,0 
18 
E 
9 45-55 
10 18,6 
32-05 
32-IO 
28,8 
64,2 
67- 2 
ig 
W 
g 28,10 
8 46,6 
40-50 
40-57 
28,8 
66, 5 
7 2 -5 
20 
E 
8 56,23 
9 2 9 -i 
31.87 
31,92 
28,8 
66,5 
69,5 
2 ? 
W. 
8 0,83 
7 22,4 
37-43 
37-49 
28,8 
67-5 
65-5 
2 4 
E 
9 18,78 
9 5°-4 
31-62 
31,67 
28,9 
65-5 
63,5 
2 5 
V/ 
9 36-25 
8 57 -i 
38-15 
38,21 
29,0 
65-3 
67,3 
26 
E 
9 14.12 
9 4 6 -5 
32-37 
32,42 
29,0 
64,8 
66,5 
28 
E 
9 18,62 
9 50,0 
31.38 
3 i -43 
29,0 
65,3 
64-5 
29 
W 
8 57-55 
8 20,0 
37-55 
37-61 
29,1 
64-5 
69,0 
3 ° 
w 
8 51,62 
8 13-5 
37,12 
38,18 
29,0 
64-3 
69,8 
Oct. 1 
E 
9 2 5-°5 
14 58.7 
33,65 
29,20 
28,9 
72,0 
7 i -5 
2 
E* 
9 18-35 
9 50,6 
32,35 
32,40 
28,8 
7 2 -5 
75-5 
Observed Zenith Distances of 46 c Draconis. 
Point on the Limb , 3 0 f North. 
Sept. 7 
E 
9 
3-63 
1 1 
19-23 
352 15,40 
3 7 13, 62 
28,5 
63,0 
64-5 
10 
E 
9 
3-73 
1 1 
19-4 
i 5- 6 7 
13-89 
28,2 
51-0 
54 -o 
15 
W 
7 
30,08 
5 
6-5 
23-58 
21,85 
28,9 
63-5 
66,0 
16 
W 
10 
22,70 
7 
55-9 
24,80 
23,04 
29,0 
61,5 
65-5 
18 
E 
9 
29,12 
11 
47 -o 
17-88 
16,1 1 
28,8 
64,0 
67,0 
19 
W 
9 
40-57 
7 
16-3 
2 4- 2 7 
22,51 
28,8 
66,5 
72-0 
20 
E 
8 
34- 2 7 
10 
5 2 -3 
18,03 
16,26 
28,8 
66,0 
69,0 
21 
W 
9 
55 - 9 ° 
7 
29,0 
26,90 
25,14 
28,8 
66, 5 
69-5 
22 
E 
8 
2,67 
1 1 
20,4 
17-73 
» 5-95 
28,8 
79 - 2 
75-3 
2 3 
W' 
9 
20,01 
6 
45-0 
24,10 
22-34 
28,8 
67-5 
65,0 
2 4 
E 
9 
3-97 
1 1 
22,3 
18-33 
16,56 
28,8 
65.5 
63,0 
2 5 
W 
9 
4 2 -55 
7 
19, 2 
23-35 
21,58 
29,0 
65-5 
67-3 
z6 
E 
9 
9,10 
1 1 
27,0 
17,90 
16,12 
29,0 
64-5 
66,5 
28 
E 
9 
I 7 - 5 2 
1 1 
35 -o 
17-48 
15-70 
29,0 
65-5 
64-5 
29 
W 
9 
13-00 
7 
48,4 
23,60 
21-83 
29,0 
64-5 
69,0 
30 
W 
9 
4-20 
6 
38-8 
24-40 
22,64 
29,1 
64-5 
69-S 
Oct. 1 
E 
9 
18,65 
11 
36,1 
17-45 
15-67 
29,0 
68,2 
61,4 
2 
E 
9 
22,35 
H 
41-1 
18,75 
16,97 
28,8 
68,0 
70-5 
