1pear'd to be a Cylinder of 5/6 parts of an
Inch in length; but when the Pipe was
taken out and turn'd upſide down, it ap
pear'd at the other end inferior in bulk to a
Pea.
Inch in length; but when the Pipe was
taken out and turn'd upſide down, it ap
pear'd at the other end inferior in bulk to a
Pea.
Theſe things being thus done we took
(to make the Experiment the more ex
actly) a ſmall pair of Scales, ſuch as Gold
Smiths uſe to weigh Gold Coyn in; and
weighing the Tube and Water in it, we
found them to amount to one Ounce thir
ty Grains and an half: Then we pour'd in
as much Water as ſerv'd to fill up the
Tube, wherein before we had left as much
ſpace unfill'd up as was poſſeſſ'd by the
bubble; and weighing again the Pipe and
Water, we found the weight increaſ'd
onely by one Grain. Laſtly, pouring out
the Water, and carefully freeing the Pipe
from it (which yet we could not perfectly
doe) we weighed the Glaſs alone, and
found it to want two Drachmes and thirty
two Grains of its former weight: So
that the bubble of Air taking up the room
but of one Grain in weight of Water, it
appear'd that the Air by its own ἐλιτὴρ
was ſo rarified, as to take up one hundred
fifty two times as much room as it did be
fore: though it were then compreſſ'd by
(to make the Experiment the more ex
actly) a ſmall pair of Scales, ſuch as Gold
Smiths uſe to weigh Gold Coyn in; and
weighing the Tube and Water in it, we
found them to amount to one Ounce thir
ty Grains and an half: Then we pour'd in
as much Water as ſerv'd to fill up the
Tube, wherein before we had left as much
ſpace unfill'd up as was poſſeſſ'd by the
bubble; and weighing again the Pipe and
Water, we found the weight increaſ'd
onely by one Grain. Laſtly, pouring out
the Water, and carefully freeing the Pipe
from it (which yet we could not perfectly
doe) we weighed the Glaſs alone, and
found it to want two Drachmes and thirty
two Grains of its former weight: So
that the bubble of Air taking up the room
but of one Grain in weight of Water, it
appear'd that the Air by its own ἐλιτὴρ
was ſo rarified, as to take up one hundred
fifty two times as much room as it did be
fore: though it were then compreſſ'd by