64 > 
Lieutenant Foster's account of 
Observations of Coincidences at Greenwich , November, 1825. 
Height above the level of the sea 181,5 feet. 
A. M. November 7th, 1825, Royal Observatory. 
Clock losing at a mean rate i 6 .87 per diem. 
Bar r 
i Begs. 29.121 mer. 45 0 .) zr 29.1 15 mean cor. to 
- — 45°- S ' 
| Ends. 29.125 
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. 
Disap. 
Disap. & 
Rc-ap. 
0 
h. m. s. 
m. s. 
111 . s. 
O 
0 
s. 
s. 
43*5 
3 21 OO 
21 5 
21 2,5 
1. 16 
1.120 
710 
710 
43,6 
32 50 
32 55 
32 52,5 
I.08 
I.O4O 
710 
711 
00 
CO 
44 40 
44 47 
44 43,5 
I. OO 
O.97O 
711 
7 1 1 
43,9 
56 31 
56 38 
5 6 34,5 
O.94 
O.9IO 
710 
7io,5 
44,0 
4 8 21 
8 29 
8 25 
0.88 
O.855 
712 
712 
44,0 
20 13 
20 21 
20 17 
0.83 
O.795 
711 
7n,5 
44,2 
32 4 
32 13 
32 8,5 
0.76 
0-735 
712 
712 
44,5 
43 5 6 
44 5 
44 0,5 
0.71 
0.685 
713 
712,5 
44,7 
55 49 
55 57 
55 53 
0.66 
O 
VC 
o 
712 
713 
44,9 
5 7 41 
7 55 
7 4 6 
0.62 
44,ii 
Means. 
711,11 
7",5 
Disappearance 
Observed vibrations in 24 li. 
86155,135 
Mean of Disap 
and Re-ap. 
86155,268 
Correct, 
for Arc. 
Disappearance 
vib. 
2.050 
1.769 
1-538 
1 -353 
1.194 
1.034 
0.882 
0.766 
0.671 
1.251 
Vibra. in 24 h. cor. for Arc 
86156,386 
Mean ofDis;. 
and Re-ap 
86156,5 
P. M. November 7th, 1825, Royal Observatory. 
Clock losing at a mean rate D.87 per diem. 
Bar r J Be g 5 
Bar * * End? 
46 
6 29 
VO 
CO 
29 
43 
29 
39-5 
1.16 
46 
41 
25 
41 
29 
41 
27 
1.08 
46 
53 
1 1 
53 
17 
53 
H 
1.00 
46 
7 4 
59 
S 
6 
5 
2,5 
0.93 
46 
16 
47 
16 
55 
16 
5 1 
0.87 
46,2 
28 
36 
28 
45 
28 
40,5 
0.81 
46,4 
4° 
25 
40 
34 
40 
29,5 
0-75 
4 6 >3 
52 
14 
52 
25 
52 
19,5 
0.69 
46,2 
8 4 
4 
4 
15 
4 
9,5 
0.64 
46,2 
15 
54 
16 
7 
16 
o,5 
0.60 
4 6 ,i3 
Means. 
1.120 
1.040 
0.965 
0.900 
0.840 
0.780 
0.720 
0.665 
0.620 
709 
706 
708 
708 
7° 9 
709 
709 
710 
710 
708,667 
707.5 
707 
708.5 
708.5 
709.5 
709 
710 
710 
7 11 
709,0 
29.125 mer. 450.5.) =29.126 mean cor. to 
29.144 — 46°.2. ) 
temp, of pend. 
86154,297 
86154,412 
2.050 
1.769 
i-5 2 3 
1.324 
1-154 
0.996 
0.846 
0.722 
0.628 
j.224 
86155,521 
86155,6 
