clxvi 
APPENDIX. 
acceleration of a pendulum between the latitudes of 51° 31' 08". 4 and 
74° 47' 14".36. N. 
By comparing, in a similar manner, the experiments made in the Voyage 
of 1818 with each other, the acceleration of the pendulum between the 
several stations at which it was tried, has been obtained as follows : 
Between London and Brassa . . 33.107 -i 
London and Hare Island 65.2386 vibrations in a mean solar day. 
Brassa and Hare Island 32.1316J 
The following Table contains the deductions which have been obtained by 
calculation from these several results. 
From the Acceleration between 
Diminution of Gravity 
from the Pole to the 
Equator 
Ellipticity of 
the Earth 
London and Brassa .... 
.0055066 
i 
314. a 
London and Hare Island . 
.0055139 
i 
313.G 
Brassa and Hare Island . 
.0055082 
1 
314.2 
London and Melville Island 
.0055258 
1 
312.6 
