1(congruouſly to what hath been above
recorded of the vaſt expanſion of the Air)
the Water which in the heavier Viol ſuc
ceeded in the room of thoſe forty odde, if
not fifty great bubbles of Air, which at
ſeveral times got out of it, amounted but
to a very inconſiderable bigneſs.
recorded of the vaſt expanſion of the Air)
the Water which in the heavier Viol ſuc
ceeded in the room of thoſe forty odde, if
not fifty great bubbles of Air, which at
ſeveral times got out of it, amounted but
to a very inconſiderable bigneſs.
IT having been obſerv'd by thoſe that
have conſider'd what belongs to Pendu
lums (a Speculation that may, in my
poor judgement, be highly uſeful to the
Naturaliſts) that their Vibrations are
more ſlowly made, and that their moti
on laſts leſs in a thicker, then in a thinner
Medium: We thought it not amiſs to
try if a Pendulum would ſwing faſter, or
continue ſwinging longer in our Receiver,
in caſe of the exſuction of the Air, then
otherwiſe. Wherefore we took a couple
of round and poliſh'd Pendulums of Iron
or Steel, of equal bigneſs, as near as we
could get the Artificer to make them, and
weighing each of them twenty Dragmes,
wanting as many Grains. One of theſe
we ſuſpended in the cavity of the Recei
ver by a very ſlender ſilken ſtring, of a
bout ſeven Inches and a half in length
have conſider'd what belongs to Pendu
lums (a Speculation that may, in my
poor judgement, be highly uſeful to the
Naturaliſts) that their Vibrations are
more ſlowly made, and that their moti
on laſts leſs in a thicker, then in a thinner
Medium: We thought it not amiſs to
try if a Pendulum would ſwing faſter, or
continue ſwinging longer in our Receiver,
in caſe of the exſuction of the Air, then
otherwiſe. Wherefore we took a couple
of round and poliſh'd Pendulums of Iron
or Steel, of equal bigneſs, as near as we
could get the Artificer to make them, and
weighing each of them twenty Dragmes,
wanting as many Grains. One of theſe
we ſuſpended in the cavity of the Recei
ver by a very ſlender ſilken ſtring, of a
bout ſeven Inches and a half in length