acceleration of the pendulum in different latitudes 189 
coincides within a tenth of a vibration, with the mean result 
in the foregoing table. 
Assuming then the length of the pendulum vibrating seconds 
in the latitude of London, viz. 51 0 31' 08, 4" at 39,13929 
inches, which has been determined by Captain Kater, the 
following Table presents its length at each of the stations at 
which the clocks have been set up, deduced from the observa- 
tions which have been detailed. 
Place of Observation. 
Latitude. 
Length of the pendulum 
vibrating seconds. 
London 
Brassa 
Hare Island 
Melville Island 
- 
51.31.08.4 N. 
60.09.42 
70.26.17 
74.47.12.4 
Inches. 
39 -i 3929 
39.16929 
39-1984 
39.207 
Deductions as to the Figure of the Earth. 
The following Table contains the diminution of gravity 
from the Pole to the Equator, and the resulting ellipticity 
of the earth deduced from the preceding observations. 
The method which has been followed in obtaining these 
deductions, is the same which has been described by Captain 
Kater in the Philosophical Transactions for 1819, p. 420, 
and 421. 
