1Suction there muſt be ſome Endeavour
or motion in the ſucking to attract the
ſucked Body. But in our laſt Experi
ment it appeares not at all how the up
per part of the empty'd Cylinder that re
maines moveleſs all the while, or any
part of it, does at all endeavour to draw
to it the depreſſed Sucker and the an
nex'd weights. And yet thoſe that be
hold the aſcention of the Sucker, without
ſeriouſly conſidering the cauſe of it, doe
readily conclude it to be rayſ'd by ſome
thing that powerfully Sucks or attracts
it, though they ſee not what that may
be or where it lurks. So that it ſeemes
not abſolutely neceſſary to Suction, that
there be in the Body, which is ſaid to ſuck,
an endeavor or motion in order thereun
to, but rather that Suction may be at leaſt
for the moſt part reduc'd to Pulſion, and
its effects aſcrib'd to ſuch a preſſure of
the neighboring air upon thoſe Bodies
(whther aërial, or of other Natures) that
are contiguous to the Body that is ſayd to
attract them, as is ſtronger than that Sub
ſtance which poſſeſſes the cavity of that
ſucking Body is able to reſiſt. To ob
ject here, that it was ſome particles of
Air remaining in the empty'd Cylin-
or motion in the ſucking to attract the
ſucked Body. But in our laſt Experi
ment it appeares not at all how the up
per part of the empty'd Cylinder that re
maines moveleſs all the while, or any
part of it, does at all endeavour to draw
to it the depreſſed Sucker and the an
nex'd weights. And yet thoſe that be
hold the aſcention of the Sucker, without
ſeriouſly conſidering the cauſe of it, doe
readily conclude it to be rayſ'd by ſome
thing that powerfully Sucks or attracts
it, though they ſee not what that may
be or where it lurks. So that it ſeemes
not abſolutely neceſſary to Suction, that
there be in the Body, which is ſaid to ſuck,
an endeavor or motion in order thereun
to, but rather that Suction may be at leaſt
for the moſt part reduc'd to Pulſion, and
its effects aſcrib'd to ſuch a preſſure of
the neighboring air upon thoſe Bodies
(whther aërial, or of other Natures) that
are contiguous to the Body that is ſayd to
attract them, as is ſtronger than that Sub
ſtance which poſſeſſes the cavity of that
ſucking Body is able to reſiſt. To ob
ject here, that it was ſome particles of
Air remaining in the empty'd Cylin-