66 
Lieutenant Foster's account of 
Observations of Coincidences at Greenwich —continued. 
Height above the level of the sea 181,5 feet. 
A. M. November 9th, 1825, Royal Observatory. 
Clock losing at a mean rate i 5 .87 per diem. 
28,969 mer. 4 4.° 5. ? r: 28,973 mean cor. 
29,000 — 46 °.o. j to temp, of pend. 
Temp. 
Time of 
Disappear- 
ance. 
Time of 
Re-appear- 
ance. 
Mean of Dis- 
appearance 
and Re-ap- 
pearance. 
Arc of 
vibra- 
tion. 
Mean 
Arc. 
Interval in se- 
conds of Clock. 
Observed vibrations in 24 h. 
Correct, 
for Arc. 
Vibra. in 24 h. cor. for Arc. 
Disappearance 
Mean of Disap. 
and Re-ap. 
Disappearance. 
Mean of Disap 
and Re-ap. 
Disap. 
Disap. & 
Re-ap. 
O 
h. m. s. 
m. s. 
m. s. 
O 
O 
s. 
s. 
vib. 
44>8 
3 *7 5 2 
*7 57 
1 7 54*5 
i-i 3 
I.090 
706 
706,5 
*•943 
44>9 
29 38 
29 44 
29 41 
1.05 
1. 015 
7 ° 4 
7 ° 5*5 
I.684 
45 
41 22 
4 1 3 1 
41 26,5 
0.98 
O.945 
707 
706,5 
I.461 
45 , 2 
S 3 9 
53 >7 
S 3 13 
0.91 
O.875 
707 
707,5 
I.250 
45 ,7 
4 4 5 6 
5 5 
5 00,5 
0.84 
0.810 
706 
707 
I.072 
45 >9 
16 42 
16 53 
16 47,5 
0.78 
0-755 
707 
706,5 
O.93I 
46,0 
28 29 
28 39 
28 34 
0-73 
0/705 
707 
707,5 
0.812 
46,1 
40 16 
40 27 
40 21,5 
0.68 
0.655 
708 
708 
0.701 

46,5 
52 4 
52 15 
52 9»5 
0.63 
0.610 
706 
7°7 
0.608 
• ••••• 
46,8 
5 3 5 ° 
4 3 
3 56,5 
0.59 
45 >69 
Means. 
706,444 
706,889 
86153,530 
86153,684 
1.162 
86154,692 
86154,846 
— 
P. M. November 9th, 1 
Clock losing at a mean 
825, Royal Observatory, 
rate i 3 .87 per diem. 
g r f Begs. 29,016 mer. 47°.5. ? 2= 29,023 mean cor 
' l End g . 29,050 — 47 0 . 3 to temp, of pend. 
47,7 
6 
25 
10 
25 
‘5 
25 
12,5 
47,8 
36 
52 
36 
57 
36 
54,5 
47,7 
48 
34 
48 
43 
48 
38,5 
47,7 
7 
00 
*9 
00 
27 
00 
23 
47,6 
12 
4 
12 
1 1 
12 
7,5 
47 , 6 
23 
49 
23 
57 
23 
53 
47,7 
35 
34 
35 
45 
35 
39,5 
47>3 
47 
20 
47 
3 1 
47 
2 5>5 
47 ,o 
59 
6 
59 
J 9 
59 
12,5 
47 ,o 
8 
10 
54 
1 1 
5 
10 
59,5 
1.090 
702 
702 
1.943 
1.015 
702 
7°4 
1.684 
7 nc 
0.950 
704,5 
*■476 
705 
0.885 
704,5 
1.281 
0.820 
705 
705,5 
1.099 
0.760 
705 
706,5 
0.943 
0.705 
706 
706 
0.812 
0 650 
706 
707 
0.691 
0.600 
708 
707 
On 
00 
U-N 
o' 
704,889 
705,222 
86152,990 
86153,106 
1.169 
86154,159 
47 >5 1 
1*13 
1.05 
0.98 
0.92 
0.85 
0.79 
0.73 
0.68 
0.62 
0.58 
Means. 
86154,275 
