1reſt of the Pipe, whoſe bore was about /4
of an Inch. The whole Siphon made
up of theſe ſeveral pieces put together,
was deſign'd to be about a Foot and a
half long; that the remaining Air, when
the Veſſel was exhauſted after the wont
ed manner, might not be able to impell
the Water to the top of the Siphon;
which being inverted, was fill'd with Wa
ter, and of which the Shorter leg being
let down two or three Inches deep into a
Glaſs Veſſel full of Water, and the up
per parts of it being faſten'd to the inſide
of the Cover of the Receiver, we pro
ceeded to cloſe firſt, and then to empty
the Veſſel.
of an Inch. The whole Siphon made
up of theſe ſeveral pieces put together,
was deſign'd to be about a Foot and a
half long; that the remaining Air, when
the Veſſel was exhauſted after the wont
ed manner, might not be able to impell
the Water to the top of the Siphon;
which being inverted, was fill'd with Wa
ter, and of which the Shorter leg being
let down two or three Inches deep into a
Glaſs Veſſel full of Water, and the up
per parts of it being faſten'd to the inſide
of the Cover of the Receiver, we pro
ceeded to cloſe firſt, and then to empty
the Veſſel.
Experi
ment 35.
ment 35.
The effect of the tryal was this, that
till a pretty quantity of Air had been
drawn out, the Water dropp'd freely out
at the lower end of the lower leg of the
Siphon, as if the Experiment had been
performed in the free Air. But afterwards,
the Bubbles (as had been apprehended)
began to diſcloſe themſelves in the Wa
ter, and aſcending to the top of the Si
phon, imbodyed themſelves there into
one, which was augmented little by little
by the riſing of other bubbles that from
time to time broke into it, but much
till a pretty quantity of Air had been
drawn out, the Water dropp'd freely out
at the lower end of the lower leg of the
Siphon, as if the Experiment had been
performed in the free Air. But afterwards,
the Bubbles (as had been apprehended)
began to diſcloſe themſelves in the Wa
ter, and aſcending to the top of the Si
phon, imbodyed themſelves there into
one, which was augmented little by little
by the riſing of other bubbles that from
time to time broke into it, but much