made with an invariable pendulum. 
285* 
APPENDIX. 
Second Series of Experiments at London , on the return from 
South America. 
17th Aug. 1823, P.M. at Mr. Browne’ 
Clock gaining 0 s , 90. 
S ’j> Barom. 
29,86. 
Temp. 
Fahren- 
heit. 
Time of co- 
incidence. 
Arc 
3f Vibra- 
tion. 
Mean 
Arc. 
Interval in 
Seconds. 
No. of 
Vibra- 
tions. 
Observed 
Vibrations in 
24 hours. 
Correc- 
tion for 
Arc. 
Vibrations in 
24 hours. 
O 
66,2 
66,0 
66, 9 
66,6 
h. m. s. 
12 18 33 
35 20 
52 10 
x 9 00 
2 5 53 
42 47 
59 4 ° 
0 
M 7 
1,07 
°>97 
0,88 
°>79 
0,72 
0,67 
0 
1,12 
1,02 
°>93 
0,83 
0,76 
0,70 
1007 
IOXO 
IOXO 
1013 
1014 
1013 
86229,30 
29,81 
29,81 
30,32 
30,69 
30,32 
2,05 
1,70 
1,41 
1,12 
0,94 
0,80 
86231,35 
3^51 
31,22 
31,44 
31,63 
3M2 
66,4 
Mean 
101 1,17 
1009,17 
86230,04 
1,34 
86231,38 
18th. Aug. P. M. Clock 
gaining 0*,90. 
Barom. 29,88. 
67,2 
67,1 
67,1 
67,0 
12 13 25 
30 11 
46 58 
1 3 49 
20 41 
37 34 
54 2 9 
M 5 
1,05 
0,96 
0,87 
o ,79 
0,72 
0,66 
1,10 
1,00 
0,91 
0,83 
0,76 
0,69 
1006 
1007 
IOI I 
1012 
IOI3 
IOIJ 
86229^3 
29,30 
29,98 
30,15 
30,32 
30,66 
1,98 
1,64 
i >35 
1,12 
0,94 
0,78 
86231,11 
30,94 
31-33 
3 I ' Z 7 
31,26 
3 i ,44 
67,1 
Mean 
1010,67 
1008,67 
86229,92 
1,30 
86231,22 
19th Aug. P. M. Clock gaining 0 3 ,60. Barom. 29,80. 
6 7>7 
67.9 
68.9 
68,5 
2 28 12 
44 59 
3 * 47 
*8 37 
35 3 1 
52 25 
4 *9 *7 
1,19 
1,08 
0,98 
0,90 
0,82 
°,74 
0,69 
M 3 
1,03 
o ,94 
0,86 
0,78 
0,71 
1007 
1008 
IOIO 
IOI4 
IOI4 
10X2 
86229,00 
29,17 
29,5 X 
30,19 
30,19 
29,85 
2,09 
M 4 
1,45 
1,21 
o ,99 
0,82 
86231,09 
30,9 1 
30,96 
31,40 
31,18 
30,67 
68,3 
Mean 
| 1010,83 
1008,83 
86229,65 
1,38 
86231,03 
mdcccxxiii. Oo* 
