Thames , it has been found , that there was no difference in time, 
between the fubmerfions of the Ball at the greateff depth , when 
it rofe two Wherry’s length from the place where it was let fall 
(being carried by the Current of the Tyde} and when it rofe onely 
a Yard, Or fo, from the fame place , where it was let down : And 
that it muff be fo in great depths and Wronger Currents, is as certain 
as eaffe to be demonftrated. 
And if it be alledged, that it muff be known , when a Light Bo- 
dy afcends from the bottom of the Water to the Top, in what 
proportion of time it rifes 5 it may be confidered , that in this Ex- 
periment the times of the Defcent and Afcent are both taken and 
computed together 5 fo that, for this purpofe , there needs not the 
nicety, which is aliedged, 
O F other Experiments ofthis way of founding without aLine, 
made by the Noble Lord Vifcount Brounker , Sir Robert 
Moray Knight, ana Mr. Book y in the Channel at Shwnefs* 
the following Account was given, Fid. 
ted a little the motion 5 the Bali 
depth. 
