68 
Lieutenant Foster's account of 
Observations of Coincidences at Greenwich — continued . 
Height above the level of the sea 181,5 feet. 
A. M. November nth, 1825, Royal Observatory. 
Clock losing at a mean rate i’. 87 per diem. 
g at . r ( Beg*. 29.273 tiier. 42 0 . i “ 29.280 mean ( 
’ \ Ends. 29.300 43 0 . j temp, of pend 
cor. to 
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 seconds 
of Clock. 
Disap. 
Disap. & 
Re-ap. 
O 
h. m. s. 
HI. S. 
m. s. 
O 
O 
9 . 
So 
42,0 
3 *4 45 
14 48 
14 46,5 
1. 14 
I.095 
706 
707,5 
42,0 
26 31 
26 37 
26 34 
I.05 
I. OIO 
708 
708 
42,1 
38 19 
38 25 
00 
O.97 
o-935 
708 
708,5 
42,4 
50 7 
50 14 
50 10,5 
O.90 
0.870 
709 
709,5 
4 2 >7 
4 * 56 
2 4 
2 00 
O.84 
0.810 
708 
708,5 
42,9 
14 44 
14 53 
14 4 8 >5 
O.78 
0.750 
711 
7 IO »5 
42,9 
25 35 
25 43 
25 39 
O.72 
0.700 
708 
709,5 
42,9 
37 23 
37 34 
37 28,5 
0.68 
0.655 
710 
7 IQ ,5 
43 ,o 
49 >3 
49 25 
49 *9 
0.63 
0.605 
710 
709,5 
43 ,o 
5 > 3 
1 14 
1 8,5 
0.58 
42,59 
Means. 
708,667 
709,111 
Observed vibrations in 24 h. 
Disappearance. 
Mean of Disap. 
[and Re-ap. 
86154,297 
86154,450 
Correct, 
for Arc, 
vib, 
I.961 
1.668 
*•43* 
1.237 
1.072 
0.919 
0.801 
0.701 
0.598 
1.154 
Vibra. corr. for Arc. 
Disappearance. Mean of Disap. 
and Re-ap. 
86155,451 
86155,604 
P.M. November nth, 1825, Royal Observatory. 
Clock losing at a mean rate i®. 87 per diem. 
t, r f Beg ff . 29.302 mer. 43° ) =: 29.312 mean cor. to 
ar * l End ff . 29.333 — 45°*5 temp, of pend. 
1 
44,5 
5 
37 54 
37 57 
37 55,5 
1. 15 
I. I IO 
705 
705 
7°7 
705 
709 
708 
708 
708 
708 
706.5 
705.5 
707.5 
707 
707,5 
708 
709 
708 
709 
2.014 
>•733 
1.49 1 
1.266 
1 
44,2 
49 39 
49 45 
49 42 
1.07 
1.030 
0.955 
0.880 
0.810 
0.750 
0.700 
0655 
0.605 
44,2 
6 
1 24 
* 3i 
1 27,5 
0.99 
:::::: 
44,4 
13 n 
>3 >9 
>3 >5 
0.92 
44,4 
24 56 
25 8 
25 2 
0.84 
1.072 
0.919 
0.801 
44,3 
36 45 
36 54 
36 49,5 
0.78 
44,2 
4 8 33 
48 42 
48 37,5 
0.72 
44,3 
7 
00 21 
O 
O 
U 
00 26,5 
0.68 
0.701 
0.598 
44-3 
12 9 
12 20 
12 14,5 
0.63 
44,4 
23 57 
24 10 
24 3,5 
0.58 
44,32 
Means. 
707,0 
707,556 
86153,722 
86153,914 
1.177 
86154,899 
861 55*091 
