[ 535 ] . 
rock. New obfervatioiis on the attra(flion of other hills, 
would tend to procure us fatisfa6tion in thefe points. But 
whatever experiments of this kind be made hereafter, let 
it be always gratefully remembered, that the world is in- 
debted for the firft fatisfadlory one to the learned zeal of 
the Royal Society, fapported by the munificence of 
GEORGE THE THIRD. 
4 B 
VoL. LXV. 
