1formér floating poſture: And this Expe
riment taught us, among other things,
that it was a work of more time and la
bor then we imagin'd, to exhauſt our En
gine as much as it may be exhauſted: for
although before the emerging of the ſmall
Viol, we did (as has been touch'd alrea
dy) think we had very conſiderably em
ptyed the Receiver, becauſe there ſeem'd
to come out but very little or almoſt
no ſenſible Air at each exſuction into
and out of the Cylinder; yet after
wards, at each drawing down the Suc
ker, the Air included in the Viol did
manifeſtly dilate it ſelf, ſo long, that
it did no leſs then nine times turn its
mouth upwards, and diſcharge a bub
ble by conjecture about the bigneſs of
a Pea, after the manner newly recited.
But as for that Violl which had the
weight in it, it roſe not at all. So
that being not able by quick pumping
to gain another bubble from the Air
in the ſwimming Glaſs, which proceed
ed from ſome ſmall leak in the Veſſel,
though it held in this Experiment more
ſtanch then was uſual, we thought fit
to let in leaſurely the Air from with
out, upon whoſe admiſſion that with-
riment taught us, among other things,
that it was a work of more time and la
bor then we imagin'd, to exhauſt our En
gine as much as it may be exhauſted: for
although before the emerging of the ſmall
Viol, we did (as has been touch'd alrea
dy) think we had very conſiderably em
ptyed the Receiver, becauſe there ſeem'd
to come out but very little or almoſt
no ſenſible Air at each exſuction into
and out of the Cylinder; yet after
wards, at each drawing down the Suc
ker, the Air included in the Viol did
manifeſtly dilate it ſelf, ſo long, that
it did no leſs then nine times turn its
mouth upwards, and diſcharge a bub
ble by conjecture about the bigneſs of
a Pea, after the manner newly recited.
But as for that Violl which had the
weight in it, it roſe not at all. So
that being not able by quick pumping
to gain another bubble from the Air
in the ſwimming Glaſs, which proceed
ed from ſome ſmall leak in the Veſſel,
though it held in this Experiment more
ſtanch then was uſual, we thought fit
to let in leaſurely the Air from with
out, upon whoſe admiſſion that with-