made with an invariable pendulum. 
22 5 
9th July, P. M. at Mr. Browne’s. 
Clock losing - 0,90 
j> Barom. 30,15. 
Temp. 
Fahren- 
heit. 
Time of co- 
incidence. 
Arc of 
Vibra- 
tion. 
Mean 
Arc. 
Interval in 
Seconds. 
No. of 
Vibra- 
tions. 
Observed 
Vibrations 
in 24 hours. 
Correc- 
tion for 
| Arc. 
Vibrations in 
24 hours. 
h. m. s. 
O 
65,1 
1 1 37 4 
1,19 
O 
IOI7 
2,09 
54 1 
1,07 
1,02 
IOl6 
I > 7 1 
12 10 57 
00 
ON 
d 
°,94 
IOI9 
L 45 
27 56 
0,88 
0,84 
IOl8 
M 5 
44 54 
0,80 
0,76 
1021 
°’95 
66,3 
1 1 55 
0,72 
65,7 
Mean 
1018,2 
IOl6,2 
86229,39 
L 49 
86230,88 
Results. 
Date. 
Barom. 
Therm. 
Vibrations in 
24 hours. 
Correction 
for Tempe- 
rature. 
Vibrations at 
68 degrees. 
July 3 
29,92 
O 
67,8 
86230,07 
— 0,08 
86229,00 
4 
30,00 
67>5 
86229,76 
0,21 
86229,?!; 
5 
30,10 
66,3 
86230,57 
— 0,72 
86229,85 
6 
3°> l 3 
66,1 
86230,40 
— 0,70 
86229,70 
7 
3 °>i 3 
66,0 
86230,64 
— 0,85 
86220,70 
8 
3 °> 1 5 
66,1 
86230,34 
— 0,70 
86229,64 
9 
30^5 
65>7 
86230,88 
— 0,97 
86229,91 
Mean 
Ck> 
O 
O 
00 
66,5 
86229,78 
Correction for Buoyancy 
+ 5>98 
86235,76 
Correction for 88 feet 
22 
No. of vibrations at London in vacuo, at the 
level of the sea, in temperature 68° . . 
= 86235,98 
MDCCCXXIII. 
Gg 
