experiments made with an invariable pendulum 
6 7 
Observations of Coincidences at Greenwich — continued. 
Height above the level of the sea 181,5 feet. 
A. M. November 10th, 1825, Royal Observatory. ^ r /Begs. 28.640 mer. 43°-5 . 1 — 28.613 mean cor. 
Clock losing at a mean rate i‘. 87 per diem. /Ends. 28.620 — 44 °- 5 - / to temp, of pend. 
Temp. 
Time of 
Disappear- 
ance. 
Time of 
Ete- appear- 
ance. 
Mean of Dis- 
appearance 
and Ke- ap- 
pearance. 
Arc of 
vibra- 
tion. 
Mean 
Arc. 
Interval in se- 
conds of Clock. 
Observed vibrations in 24 h. 
Correct, 
for Arc. 
Vibra. corr. for Arc. 
Disappearance. 
Mean of Disap, 
and Re-app. 
Disappearance. 
Mean ofDisap. 
and Re-app. 
Disap. 
Disap. & 
Re-ap. 
0 
b. m. s. 
m. s. 
in. s. 
O 
0 
s. 
S. 
44,0 
3 19 1 
19 8 
*9 4.5 
l.IO 
1.060 
706 
706 

...... 
vib. 
1-837 

44,0 
30 47 
3 ° 54 
30 5°; 5 
1.02 
0.980 
706 
706 
I.572 
...... 
...... 
44 * 1 
42 33 
42 40 
42 36,5 
O.94 
0.910 
706 
707 
1-353 
...... 
...... 
44-1 
54 19 
54 28 
54 23,5 
0.88 
0.850 
707 
7 ° 7 ; 5 
1.181 
0 a a • » » 

44,1 
466 
6 16 
6 1 1 
0.82 
0.790 
706 
7 ° 7;5 
1.021 
• ••••• 

44,2 
17 52 
18 5 
17 58.5 
0.76 
0.740 
709 
708 
0.896 
...... 
44>3 
29 41 
29 52 
29 4 6 ;5 
0.72 
0.700 
706 
707.5 
o.8oi 
...... 
...... 
44 ; 4 
4 1 2 7 
4 1 4 i 
4 i 34 
0.68 
0.655 
708 
708,5 
0.702 
...... 

44.5 
53 15 
53 3 ° 
53 2z, 5 
0.63 
0.605 
710 
709 
O 
VO 
00 

...... 
44,8 
5 5 5 
5 18 
5 ”;5 
0.58 
44.25 
Means. 
707,111 
7 ° 7>444 
86153,761 
86153,876 
1.107 
86154,868 
86154,983 
P. M. November 10th, 
1825, Royal Observatory. 
p„r /Beg?. 28,617 mer. 45 0 
| = *8,597 mean cor. 
Clock losing at a mean rate i s .87 per diem. 
‘ /Ends. 28,613 
- 45 ° 
j to temp, of pend. 
45;2 
63110 
31 16 
31 13 
1.16 
1. 1 20 
703 
7 ° 3;5 
2.051 

45.2 
42 53 
43 00 
42 5 6 ;5 
1.08 
I.O50 
705 
705 
1.803 
45 >2 
54 38 
54 45 
54 4»;5 
1.02 
O.980 
705 
706 
1.572 
45;2 
7 6 23 
6 32 
6 27,5 
0.94 
O.9IC 
706 
706 
1-353 
45.2 
18 9 
18 18 
*8 13.5 
0.88 
O.85O 
706 
706 
1. 181 
45 j2 
29 55 
30 4 
29 59-5 
0.82 
O.780 
705 
707 
0.996 
45;2 
41 40 
4 i 53 
4 1 46.5 
0.74 
O.7IO 
706 
706 
0.823 
45 ’ 2 
53 26 
53 39 
53 32,5 
0.68 
0.655 
707 
707 
0.702 
45.2 
8 5 *3 
5 26 
5 i 9;5 
0.63 
O.605 
706 
707 
0.598 
45.2 
16 55 
7 14 
17 6,5 
0.58 
45.2 
Means. 
7 ° 5;444 
7 ° 5;944 
86153,183 
86 l 53;357 
1.231 
86154,414 
86154,588 
