1 to be very convex, or ſwelling, in the
middle; but if you dip the end of a flen-
der Pipe in it, the ſurface of the Li-
quor (as 'tis call'd) will be lower within
the Pipe, then without.Which Phaeno-
mena, whether, and how far, they may
be deduc'd from the Figure of the Mer-
curial Corpuſcles, and the Shape of the
Springy Particles of the Air, I willingly
leave to be conſider'd.
middle; but if you dip the end of a flen-
der Pipe in it, the ſurface of the Li-
quor (as 'tis call'd) will be lower within
the Pipe, then without.Which Phaeno-
mena, whether, and how far, they may
be deduc'd from the Figure of the Mer-
curial Corpuſcles, and the Shape of the
Springy Particles of the Air, I willingly
leave to be conſider'd.
SEveral ways we have met with pro-
poſ'd, partly by the excellent Galileo,
and partly by other ingenious Writers,
to manifeſt that the Air is not devoid of
weight; ſome of theſe, require the previ-
ous abſence of the Air to be weighed;
and others, the violent condenſation of it.
But if we could lift a pair of Scales above
the Atmoſphere, or place them in a Va-
cuum, we might there weigh a parcel of
Air it ſelf, as here we do other Bodies in
the Air, becauſe it would there be heavi-
er then that which ſurrounds it, as are
groſſer Bodies we commonly weigh, then
the medium or ambient Air.Where-
fore, though we have above declin'd to
affirm, that our Receiver, when empty-
poſ'd, partly by the excellent Galileo,
and partly by other ingenious Writers,
to manifeſt that the Air is not devoid of
weight; ſome of theſe, require the previ-
ous abſence of the Air to be weighed;
and others, the violent condenſation of it.
But if we could lift a pair of Scales above
the Atmoſphere, or place them in a Va-
cuum, we might there weigh a parcel of
Air it ſelf, as here we do other Bodies in
the Air, becauſe it would there be heavi-
er then that which ſurrounds it, as are
groſſer Bodies we commonly weigh, then
the medium or ambient Air.Where-
fore, though we have above declin'd to
affirm, that our Receiver, when empty-