THat the Air has a notable Elaſtical
power (whenceſoever that proceeds)
we have, I ſuppoſe, abundantly evinc'd,
and it begins to be acknowledg'd by the
eminenteſt Modern Naturaliſts. But whe
ther or no there be in Water ſo much as
a languid one, ſeems hitherto to have been
ſcarce conſider'd, nor has been yet, for
ought I know, determin'd either way by
any Writer, which invited us to make the
following Experiment.
power (whenceſoever that proceeds)
we have, I ſuppoſe, abundantly evinc'd,
and it begins to be acknowledg'd by the
eminenteſt Modern Naturaliſts. But whe
ther or no there be in Water ſo much as
a languid one, ſeems hitherto to have been
ſcarce conſider'd, nor has been yet, for
ought I know, determin'd either way by
any Writer, which invited us to make the
following Experiment.
Experi
ment 20.
ment 20.
There was taken a great Glaſs-bubble,
with a long neck; (ſuch as Chymiſts are
wont to call a Philoſophical Egg) which
being fill'd with common Water till the
Liquor reach'd about a ſpan above the
bubble, and a piece of Paper being there
paſted on, was put unſtop'd into the Re
ceiver, and then the Air was ſuck'd out
after the wonted manner. The event was
this, That a conſiderable part of the Air,
pent up in the Receiver, was drawn out
before we diſcern'd any expanſion of the
Water; but, continuing the labor of
pumping, the Water manifeſtly began to
aſcend in the ſtem of the Glaſs, and di
vers bubbles looſening themſelves from
with a long neck; (ſuch as Chymiſts are
wont to call a Philoſophical Egg) which
being fill'd with common Water till the
Liquor reach'd about a ſpan above the
bubble, and a piece of Paper being there
paſted on, was put unſtop'd into the Re
ceiver, and then the Air was ſuck'd out
after the wonted manner. The event was
this, That a conſiderable part of the Air,
pent up in the Receiver, was drawn out
before we diſcern'd any expanſion of the
Water; but, continuing the labor of
pumping, the Water manifeſtly began to
aſcend in the ſtem of the Glaſs, and di
vers bubbles looſening themſelves from
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