experiments made with an invariable pendulum, 
63 
III. Concluding Series at the Royal Observatory at Greenwich. 
November 1825. 
Comparisons of the Clock, with the Observatory Transit Clock. 
Date. 
Time by 
Clock. 
Time by the 
Observatory Clock. 
Mean Time 
at Greenwich. 
Clock Slow of 
Mean Time. 
h. 
m. 
s. 
b. 
ra. 
S. 
h. 
m. 
S. 
h. 
m. 
s. 
7th, A, M. 
2 
25 
00 
12 
2 
31,52 
8 
56 
33,44 
6 
31 
3 3 >44 
— Noon 
5 
25 
00 
!5 
3 
J,3 8 
1 1 
56 
34 ,o 6 
6 
31 
34,06 
- P. M. 
8 
34 
00 
18 
12 
32,95 
3 
5 
34A3 
6 
31 
34A 3 
8th, A. M. 
2 
17 
2 9>93 
I I 
59 
00,00 
8 
49 
6,15 
6 
31 
36,22 
— Noon 
5 
33 
57'34 
15 
16 
00,00 
0 
5 
33, 8 5 
6 
31 
36,51 
— P. M. 
8 
24 
00 
18 
6 
30,86 
2 
55 
36,74 
6 
31 
36,74 
9th, A. M. 
2 
23 
00 
12 
8 
29,77 
8 
54 
38,21 
6 
31 
38,21 
— Noon 
5 
35 
00 
15 
21 
M4 
0 
6 
38,40 
6 
31 
38,40 
— P. M. 
8 
23 
00 
18 
9 
29,38 
2 
54 
38,60 
6 
31 
38,60 
10th, A. M. 
2 
25 
00 
12 
H 
28,64 
8 
56 
39,89 
6 
31 
39,89 
— Noon 
5 
3 6 
00 
15 
26 
00,22 
0 
7 
40,06 
6 
31 
40,06 
— P. M. 
8 
39 
00 
18 
29 
30,39 
3 
10 
40,14 
6 
31 
40,14 
nth, A. M. 
2 
3 6 
00 
12 
29 
28,47 
9 
7 
41,16 
6 
31 
41,16 
— Noon 
5 
28 
00 
15 
21 
56,91 
11 
59 
41,32 
6 
31 
4**32 
— P. M. 
9 
13 
00 
*9 
7 
34,24 
3 
44 
41,62 
6 
31 
41,62 
From the above Table of Comparisons the following, of rates losing, 
has been deduced. 
Times of 
Comparison. 
From 
7 to 8 
From 
7 to 9 
From 
7 to 10 
From 
7 to 11 
From 
8 to 9 
From 
8 to 10 
From 
8 to 11 
From 
9 to 10 
From 
9 to 11 
From 
10 to 11 
A. M. . . 
s. 
2.794 
2.386 
S. 
2.150 
s. 
1.930 
1.978 
8. 
1.828 
1-638 
i!< 5 7 8 
s. 
1.469 
s. 
1.260 
Noon . . 
2.435 
2.163 
I.996 
1.814 
1.892 
1.776 
I.608 
I.660 
1.465 
1.271 
P. M. . . 
2.630 
2.241 
2.002 
1.862 
1-853 
1.687 
I.606 
I.522 
1.483 
1-445 
Rate los? f 
in a mean V 
solar day j 
2.62 
2.26 
2.O5 
1.87 
1. 91 
1.76 
1.62 
I.62 
1.47 
1.32 
