215
and that there was not yet known any sub
stance that would Retaine
the salt & let the fre
sh water straine through -
It was sugge
sted that tryalls might be made w
th seuerall sub
stances
to see whether there were any that would make the water any
thing fre
sher
D
r. Croon mentiond the experiment that had been formerly
made by m
r. Boyle of making the water ri
se by filtration to
a con
siderable height aboue the surface of the water in
the ve
ssell.
vpon w
ch. the Society Di
sired that some exp
ts. of that kind
might be shewd the next Day.
A Letter was Produced Directed from D
r. Edward Leechner of Erford Directed to D
rGrew secretary of
the society but being Long the reading of it was remitted to the next day
/m
r. Hooke also produced a Di
scour
se from m
r. Iames Young of Plimmouth De
siring Licen
se
to print the same which was referred also to another time -/
As also m
r. Hooke mentiond an experiment for examining the
Grauitation of
the air at seuerall heights aboue
the surface of
theearth.
Ref: CELL/RS/HF_217 © Centre for Editing Lives and Letters
