170 Mr. Goldingham’s observations , &c. 
Vibrations of the Pendulum at London. 
Date 
1820 . 
Barome- 
ter. 
Thermo- 
meter. 
Vibrations 
in 24 hours. 
Correction 
for 
Temperature. 
Correct vibra- 
tions in a mean 
solar day at 7o° 
July 25 
26 
27 
28 
29 
Inch. 
29,83 
30,01 
30,01 
30,01 
30,01 
67,6 
66.5 
67.5 
68,1 
68,3 
86294,40 
86294,50 
86294,21 
86293,80 
86293,76 
1,02 
1,48 
1,06 
0,70 
0,72 
86293,38 
86293,02 
86293,15 
86293,10 
86293,04 
Mean 
2 9>97 
67,6 
86293,14 
From the above table it appears, that the pendulum makes 
86293,14 vibrations in a mean solar day, in latitude 51 0 31' 8", 4 
the temperature being 70°, and the height above the level of 
the sea 83 feet. The correction employed for temperature is 
0,423 of a vibration for one degree. In computing the cor- 
rection for the buoyancy of the atmosphere during the expe- 
riments, the temperature of 67° ,6 must be used, the baro- 
meter being at 29,97 inches. 
J. GOLDINGHAM. 
