1we put ſo much of a certain ponderous
Mercurial mixture (hapning to be then at
hand) that the mouth being ſtopt with a
little ſoft Wax, the Glaſs would juſt ſink
in Water and no more; this we let fall to
the bottom of a wide-mouth'd Cryſtal
Jar, fill'd with about half a pint of com
mon Water, and into the ſame Veſſel we
ſunk the other Eſſence Glaſs unſtopp'd,
with as much Water in it as was more
then ſufficient to make it ſubſide. Both
theſe ſunk with their mouthes downward,
the former being about three quarters full
of Air, the latter containing in it a bub
ble of Air that was gheſſ'd to be of the
bigneſs of half a Pea: This done, the
wide-mouth'd Glaſs was let down into
the Receiver, and the way of imploy
ing the Engine was carefully made uſe
of.
Mercurial mixture (hapning to be then at
hand) that the mouth being ſtopt with a
little ſoft Wax, the Glaſs would juſt ſink
in Water and no more; this we let fall to
the bottom of a wide-mouth'd Cryſtal
Jar, fill'd with about half a pint of com
mon Water, and into the ſame Veſſel we
ſunk the other Eſſence Glaſs unſtopp'd,
with as much Water in it as was more
then ſufficient to make it ſubſide. Both
theſe ſunk with their mouthes downward,
the former being about three quarters full
of Air, the latter containing in it a bub
ble of Air that was gheſſ'd to be of the
bigneſs of half a Pea: This done, the
wide-mouth'd Glaſs was let down into
the Receiver, and the way of imploy
ing the Engine was carefully made uſe
of.
Experi
ment 25.
ment 25.
The ſucceſs was, That having drawn
out a pretty quantity of Air, the bubbles
began to diſcloſe themſelves in the Wa
ter, as in the former Experiments; and
though for a good while after the bubbles
aſcended in ſwarms from the lower parts
of the Water, and haſtily broke at the
top; yet we proſecuted the Experiment
ſo long without ſeeing any effect wrought
out a pretty quantity of Air, the bubbles
began to diſcloſe themſelves in the Wa
ter, as in the former Experiments; and
though for a good while after the bubbles
aſcended in ſwarms from the lower parts
of the Water, and haſtily broke at the
top; yet we proſecuted the Experiment
ſo long without ſeeing any effect wrought