experiments made with an invariable pendulum. 
19 
Observations of Coincidences at Greenwich — continued. 
Height above the level of the sea 181,5 feet. 
P. M. 24th April, 1824, Royal Observatory. 
Clock losing at a mean rate 3 5 .29. 
r, . ( Beginning: 30.00) 
Barometer j En | ing * | 0 . 03 $ 3° 
015 mean. 
Time of 
Time of 
Mean of Dis- 
Arc of 
Mean 
Arc. 
Interval in se- 
Observed vibrations in 24 h. 
Correct, 
for Arc. 
Vibra. in 24 h. corr. for Arc. 
Temp. 
Disappear- 
Re-appear- 
ance. 
appearance 
and Re-ap- 
pearance. 
vibra- 
* 
ance. 
tion. 
Disap. 
Disap. & 
Re-ap. 
Disappearance. 
Disappearance 
and Re-app. 
Disappearance. 
Disappearance 
and Re-app. 
5 5 >9 
h. ID. s. 
1 45 17 
m. s. 
45 21 
m. s. 
45 l 9 
O 
1. 18 
O 
1-135 
1.055 
0.985 
0.910 
0.845 
0.795 
0.745 
0.690 
0.640 
s. 
694 
696 
694 
69 5 
697 
695 
695 
698 
695 
s. 
695 
696 
6 94 o 
696 
696 
696 
696 
697,5 
696 
vib. 
2.107 
1.820 
56 51 
5 6 57 
56 54 
I.09 
2 8 27 
8 33 
8 30 
1.02 
1 *5 87 
1 -354 
1.168 
20 I 
20 8 
20 4,5 
O.95 
31 36 
3 1 45 
31 40,5 
O.87 
43 13 
43 20 
43 16,5 
0.82 
1.034 
0.908 
0.779 
0.671 
54 48 
54 57 
54 52,5 
O.77 
3 6 23 
6 34 
6 28,5 
O.72 
18 1 
18 11 
18 6 
0.66 
58,0 
29 36 
29 48 
29 42 
0.62 
56,9 
Mean. 
695,44 
695,89 
86148,24 
86148,41 
1.27 
86149,51 
86149,68 
A. M. 25th April, 1824, Royal Observatory. 
Clock losing at a mean rate 3 s . 29. 
t, (Beginning 30.0c ) 
Barometer J En | ing> $ $ J =30.047 mean. 
51,5 
8 
52 
27 
52 
3i 
52 
29 
1.16 
1.115 
1.030 
0.955 
0.885 
0.825 
°-775 
0.725 
0.675 
0.635 
701 
701 
701 
702 
701 
702 
700 
702 
701 
701.5 
701 
702 
702 
7 01 .5 
702 
701 
701 
702 
2.033 
i -735 
1.492 
1.281 
9 
4 
8 
4 
13 
4 
10,5 
1.07 
K 
49 
15 
54 
15 
5 i ,5 
0.99 
27 
3 ° 
27 
37 
27 
33,5 
0.92 
39 
12 
39 
19 
39 
J 5,5 
0.85 
1-113 
0.982 
0.860 
5 ° 
53 
5i 
1 
50 
57 
0.80 
10 
2 
35 
2 
43 
2 
39 
0.75 
14 
15 
H 
25 
H 
20 
0.70 
0.746 
0.661 
25 
57 
26 
5 
26 
1 
0.65 
> 4 » 8 
37 3 8 
37 4 8 
37 
43 
0.62 
I 3 ,i 
Mean. 
701,22 
701,56 
86150,29 
86150,41 
1. 21 
8615 1,50 
8615 1,62 
