Captain Kater’s floating collimator , &c. 
3 17 
Table I. 
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. 
Face of Circle. 
East. 
West. 
a Cas 
siopes. 
2 II 21,79 
21,67 
19,12 
22,35 
22,63 
20,99 
20,06 
20,61 
23,32 
20,88 
, 
2 11 22,76 
21,56 
21,86 
22,93 
22,50 
22,24 
2 II 21,34 
2 11 22,31 
2 i ,34 
Mean 
2 11 21,82 
By Catalogue 
22,14 
Face of Circle. 
East. 
West. 
Face of Circle. 
East. 
West. 
1825. 
Oct. 8 
9 
12 
H 
*5 
21 
2 5 
Nov. 3 
7 
9 
11 
*4 
1 6 
17 
24 
2 5 
Means 
Using single observations of col- 
limator made nearest to the time 
of observation of the star. 
Oct. 8 
9 
12 
S H 
15 
21 
2 5 
Nov. 3 
7 
9 
1 1 
*4 
16 
*7 
24 
2 5 
Means 
2 1 1 
21,89 
21,77 
19,81 
21,5 + 
21,87 
21,48 
20,95 
20,38 
2 3 * 3 i 
22,70 
2 11 z 
>57 
Mean 
2 1 1 
22.38 
21,48 
21,32 
22.39 
22,42 
22,16 
2 11 22,03 
21,57 
2 11 21,80 
1825. 
Aug. 5 
6 
7 
Means 
Aldebaran 
37 H 15,80 
14,48 
14,67 
37 H H>9 8 
Mean 
By Catalogue 
37 H 15,21 
14,81 
13,86 
37 14 *4,63 
14,98 
37 14 14,80 
i 5 , 4 i 
1825. 
July 25 
29 
3° 
Aug. 4 
5 
6 
7 
9 
Means 
7 34 4**60 
40,96 
Capella. 
' 7 34 
40,58 
7 34 4**05 
Mean 
By Catalogue 
38,52 
40,80 
38,47 
36,92 
37,63 
7 34 
38,47 
41,05 
7 34 
39,76 
40,72 
1825. 
Aug. 5 
6 
1825. 
July 25 
29 
30 
Aug. 5 
7 
8 
10 
Means 
24 56 1 1,65 
Mean 
By Catalogue 
@ Tauri. 
24 56 10,51 
24 56 10,89 
24 56 10,70 
11,65 
24 56 11,17 
12,76 
a Orionis. 
46 
46 
1 14,76 
12,1 1 
13,64 
13,84 
11*94 
46 1 13,26 
Mean 
By Catalogue 
T t 
1 14,88 
14,66 
13,81 
12,98 
1825. 
July 24 
25 
27 
Aug. 22 
Sept. 3 
Means 
Sirius. 
69 52 14,07 
1 1,22 
11,27 
69 52 12,19 
Mean 
By Catalogue 
69 52 12,29 
9*59 
9,03 
69 52 10,30 
12,19 
69 52 11,24 
10,87 
1825. 
Aug. 5 
22 
Sept. 3 
46 
1 14,08 
13,26 
46 
1 13,67 
14,95 
July 28 
, 2 9 
Aug. 5 
Sept. 5 
14 
21 
^ 29 
Oct. 7 
21 
Nov. 5 
9 
10 
18 
29 
Dec. 2 
3 
Means 
Procyon. 
47 43 13*01 ' 
, 13*75 
t. w 
47 43 13,38 
Mean 
By Catalogue 
47 43 I4,n 
H ,52 
47 43 H, 3 i 
13,38 
47 43 13,84 
13,97 
Arcturus. 
33 17 20,57 
19,08 
f. w 
f. w 
f. w 
f. w 
21,45 
t. w. 18,79 
f. w. 21,59 
f. w 
f. w 
f. w 
f. w 
33 17 20,62 
21,84 
20,83 
20,92 
22,55 
24,94 
21,94 
22,6 1 
22,15 
22,77 
21,47 
33 17 20,30 33 17 22,06 
20,30 
Mean 
By Catalogue 
33 17 21,18 
21,03 
MDCCCXXVI. 
