103 
for determining the difference of meridians, &c. 
July 22. Rockets extremely bad ; four only could be 
observed. 
Rockets. 
App*Time I . 
- - - II. 
- - - III. 
Mean. 
1 
9 b 32 m 51.2 s 
5 1 *3 5 s 
51.4 s 
51.32s 
2 
- 4 2 49-9 
- - 49.8 
- - 49.6 
49-77 
3 
- 5 2 5>-4 
- ~ 51-3 
5 i -3 
5 1 *33 
4 
5 
— 
10 2 52.4 
- - 52.4 
52.4 
6 
7 

8 
— 
— 
9 
— 
10 
Comparisons of Chronometer and Clock. 
Chronometer. Clock. 
Before 9 h 23“ I 17 11 23“ 48 s 
After 11 11 | 19 12 5.59 
Mean Error and Rate of Sidereal Clock. 
Mean of 5*“. I Mean error. Mean rate. 
i 5 h 47m j 47.573 + 0.21 
Comparisons from 21 to 22, + 0.32. 
Chronometer fast 1 m 17.95 s 
The means of the Comparisons, with the true Sidereal 
Time corresponding. 
Chron. 
Clock. 
True Sidereal 
Time. 
July 1 1 
1 o' 1 
4m 
30 s 
17 1 
22' 
n 3 - 36 s 
1 7 f 
2 1 1 
n 15.0 s 
12 
10 
1 1 
3 ° 
17 
3 2 
59.87 
>7 
3 2 
1 1.60 
13 
10 
14 
3 ° 
17 
39 
5 6 -i 9 
17 
39 
7.80 
H 
10 
*5 
0 
17 
4 2 
22.00 
17 
4 ' 
33-75 
15 
10 
*7 
0 
17 
5 ° 
18.42 
17 
49 
30.52 
16 
10 
*5 
0 
17 
5 2 
14.67 
17 
5 i 
27.09 
*7 
10 
16 
0 
1 7 
57 
12.70 
17 
5 6 
25.14 
18 
10 
2 4 
0 
18 
9 
1 1.25 
18 
8 
23-97 
19 
9 
59 
0 
17 
48 
5-43 
17 
47 
18.27 
20 
10 
8 
0 
18 
1 
3.20 
18 
0 
! 5 . 9 8 
21 
10 
1 1 
3 ° 
18 
8 
30.405 
18 
7 
42.03 
22 
10 
17 
0 
18 
17 
56.79 
18 
*7 
9.20 
