Boyle, Robert - New experiments physico-mechanicall, touching the spring of the air and its effects

1open at both ends, and of divers Inches
in length: One end of this Pipe was ſo
put into the Neck of the Viol, as to reach
a little below it, and then was carefully
cemented thereto that no Air might get
into the Viol, nor no Water get out of
it, otherwiſe then through the Pipe; and
then the Pipe being warily fill'd, about
half way up to the top, with more Wa
ter, and a mark being paſted over againſt
the upper ſurface of the Liquor; the Viol
thus fitted with the Pipe, was, by ſtrings
let down into the Receiver, and according
to the wonted manner exquiſitely cloſ'd
up in it.

This done, we began to Pump out the
Air, and when a pretty quantity of it had
been drawn away, the Water in the Pipe
began to riſe higher in the Pipe, at the
ſides of which ſome little bubbles diſco
ver'd themſelves. After a little while
longer, the Water ſtill ſwelling, there
appear'd at the bottom of the Pipe a bub
ble about the bigneſs of a ſmall Pea,
which aſcending through the Pipe to the
top of the Water, ſtaid there awhile and
then broke; but the Pump being nimbly
ply'd, the expanſion of the Water ſo en
creaſ'd, that quickly, getting up to the

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