as determined by chronometers at sea. 205 
The watch, No. 1, gained with both poles, and in every 
position of the magnet but one. No. 2, gained with both 
poles in every position. Nos. 3 and 4 gained in every po- 
sition but two ; and the quantities lost in the positions were 
far exceeded by the accelerations caused by the opposite 
poles, excepting one case in that of No. 4. 
The magnets were likewise placed in different posi- 
tions out of the planes of the balances ; the results were 
very similar to those above, but differing in quantity, ac- 
cording to the distance of the magnets from the planes of the 
balances. 
Upon placing the magnets very near to the rim of the 
balances, a very rapid acceleration took place with both poles, 
and in every position of the magnets, particularly in the 
watches Nos. 1 and 2. Upon too near an approach of the 
magnets, the watch No. 1, and chronometer No. 3, were 
rendered useless ; the former, when the magnets were 
taken away, gaining no less than about l^- hour, and the 
chronometer losing about 50'' in 24 hours ; and in again 
repeating the experiments in the plane of the balances, the 
rates of the chronometers (without the magnets) were so 
variable, that it was necessary to determine their rates before 
and after each application of the magnets ; the following, 
however, is a Table of the results upon the chronometers 
Nos. 3 and 4. 
MDCCCXX. 
Ee 
