Pofitions and Magnitudes of ihe Fixed Stars, &c. 189 
One thing let me defire Foreigners to remark: that the re- 
gifters I gave of the going of my clock were meant only as 
the relations of a mere faéf; that a clock, of fuch a conftruc- 
tion, kept or altered its rate fo or fo. They feem to have un- 
derftood it as an account of a capital clock, by valuing them- 
felves upon fome of theirs going better. The time-keepers in 
moft of our Obfervatories are far more accurate; but, excepting 
thofe of the Royal Obfervatory at eae their accuracy 
is not made public. 
Another remark it may alfo be proper to make; that, fince 
my former papers, the longitude of this place has been afcer- 
tained by comparative obfervations .on the burfting of fome 
rockets, let off on purpofe; which, on a mean of feveral, 
turns out to be 19”’,02 in time E.of Greenwich Obfervatory ; 
that is, it may hereafter be confidered as 19”, inftead of 
18’’,6 as I had before calculated it trigonometrically ue the 
bearings. 
Observations 
