172 Captain Sabine’s experiments to determine the 
Results of the first Voyage. 
Recapitulation. 
Place of obser- 
vation. 
Latitude 
Vibrations in a 
mean solar 
day. 
Acceleration. 
London 
5i.3i.o8»4N 
86497,4 
33,107 vibrations between London & Brassa. 
Brassa 
60.09.42 N 
86530,507 
32,1316 between Brassa and Hare Island. 
Hare Island 
70.26. 17N 
86562,6386 
and 65,2386between London and Hare Island 
SECOND VOYAGE. 
It has been already noticed that both clocks were em- 
ployed on the second expedition ; they were placed in my 
charge early in 1819, to afford time for the determination of 
their rates in London previously to their embarkation. 
The observations, of which the details are given in the sub- 
joined Tables I. and II, were made, by Mr. Browne’s permis- 
sion, in the room already described in Portland-place ; the 
rate of the chronometer with which the clocks were com- 
pared being supplied, as before, by Mr. Browne : the tempe- 
ratures are corrected to 45°, being the mean to which all the 
observations of the second voyage are reduced ; 
