Captain Kater’s floating collimator , &c. 
319 
Mean zenith distances reduced to Jan. 1st, 1825, found by applying the index correction, as determined by 
the collimator, to the observed zenith distances, and reducing them by the equations. 
Table I. 
Face of Circle. 
East. 
West. 
1825. 
a Ac 
uilae. 
Oct. 7 
44 58 24,03 
H 
2 1,02 
15 
24,78 
17 
21,77 
J 9 
23 A 3 
2 9 
24,48 
Nov. 4 
24,69 
7 
24,52 
9 
23,87 
10 
25,02 
12 
44 58 24,83 
! 5 

25,90 
Dec. 2 
• ••••«< • 
26,93 
3 
25,62 
Means 
44 58 23,73 
44 58 25,82 
23,73 
Mean 
44 58 24,77 
By Catalogue 
24,26 
1825. 
a . Cygni. 
Aug. 10 
8 43 38,64 
8 43 39 . 12 
29 
37 , 4 i 
3 1 
34»92 
Sept. 3 
39,12 
4 
37,83 
6 
36,89 
10 
38,64 
13 
37,49 
22 
36,51 
26 
37,69 
29 
39 , 18 
Oct. 15 
41,78 
25 
41,36 
29 
41,21 
4 
41,02 
7 
40,85 
9 
43,49 
10 
42,27 
1 1 
38,19 
12 

38,87 
»4 

38,19 
16 
. 
39,42 
17 

39,16 
Dec. 2 

40,44 
3 

39,00 
Means 
8 43 4 U 33 
8 43 38,23 
4 i ,33 
Mean 
8 43 39,78 
ByCatalogue 
40,26 
Face of Circle. 
East. 
West. 
1825. 
2 a . Capricor 
ni — continued . 
Oct. 7 
66 27 58,61 
14 
58,06 
15 
60,28 
17 
58,04 
29 
58,40 
Nov. 4 
59,44 
7 
59,20 
9 
60,74 
10 
59,37 
12 
60,65 
Dec. 2 
f. vv 
6 3,57 
Means 
66 27 59,13 
66 27 58,94 
59 A 3 
Mean 
66 27 59,03 
ByCatalogue 
59 ,n 
1825. 
a . Pegasi. 
Aug. 29 

39 7 14,89 
Sept. 27 

U ,35 
28 

17,34 
29 

i 6,55 
3 o 

16,97 
Oct. 7 
39 7 U ,47 
8 
16,10 
12 
19,10 
13 
18,29 
H 
16,10 
21 
17,53 
25 
17,07 
29 
14,94 
Nov. 3 
16,52 
4 
15,84 
7 
15,36 
9 
18,10 
10 
17,87 
1 1 
15,79 
16 
16,50 
Dec. 3 
13,83 
Means 
39 7 16,95 
39 7 16,15 
16,95 
Mean 
39 7 16,55 
ByCatalogue 
16,22 
Face of Circle. 
East. 
West. 
Using single observation of colli- 
mator made nearest to the time 
of ob. of the star. 
S 
Aug 10 
29 
3 i 
Sept. 3 
4 
6 
10 
13 
22 
26 
^ 29 
Oct. 15 
z 5 
29 
Nov. 4 
7 
9 
10 
1 1 
12 
H 
1 6 
1 7 
2 
Dec, 
3 
Means 
43 
42,54 
40,41 
42,23 
41,25 
40,86 
41,67 
40,05 
8 43 41,29 
Mean 
By Catalogue 
8 43 
38,26 
38,21 
35>°3 
37. 8 4 
36,55 
37.71 
38,19 
39 , 12 
38,87 
38,32 
37,57 
38,57 
38,87 
38.27 
39 , 9 6 
39,7 o 
40,62 
38.28 
8 43 38,33 
41,29 
8 43 39 > 8 i 
40,26 
Aug. 29 
3 i 
Sept. 3 
4 
6 
10 
i ( 
>3 
22 
26 
27 
28 
Oct. 4 
2 a Capricorni. 
66 27 58,55 
57 , 4 i 
54 , °4 
57,38 
56,92 
59,12 
60,51 
55,62 
59,70 
62,28 
60,18 
59,02 
59,12 
