1upon the Eſſence: Bottles, that we began
to diſpair of ſeeing either of them riſe, but
continuing to ply the Pump, that little
Glaſs, whoſe mouth was open'd, came to
the top of the Water, being, as it were,
boy'd up thither by a great number of
bubbles that had faſtned themſelves to
the ſides of it; ſwimming thus with the
mouth downward, we could eaſily per
ceive that the internal Air above men
tion'd had much delated it ſelf, and there
by ſeem'd to have contributed to the e
merging of the Glaſs, which remain'd
floating, notwithſtanding the breaking
and vaniſhing of moſt of the contiguous
bubbles: being hereby incouraged to per
ſiſt in pumping, we obſerved with ſome
pleaſure, that at each time we turn'd the
Key, the Air in the little Glaſs did mani
feſtly expand it ſelf and thruſt out the wa
ter, generally retaining a very protuberant
ſurface where it was contiguous to the re
maining Water. And when after divers
exſuctions of the Air in the Receiver,
that in the little Viol ſo dilated it ſelf as
to expel almoſt all the Water, it turn'd
up its mouth towards the ſurface of the
Water in the Jar, and there deliver'd a
large bubble, and then relapſed into its
to diſpair of ſeeing either of them riſe, but
continuing to ply the Pump, that little
Glaſs, whoſe mouth was open'd, came to
the top of the Water, being, as it were,
boy'd up thither by a great number of
bubbles that had faſtned themſelves to
the ſides of it; ſwimming thus with the
mouth downward, we could eaſily per
ceive that the internal Air above men
tion'd had much delated it ſelf, and there
by ſeem'd to have contributed to the e
merging of the Glaſs, which remain'd
floating, notwithſtanding the breaking
and vaniſhing of moſt of the contiguous
bubbles: being hereby incouraged to per
ſiſt in pumping, we obſerved with ſome
pleaſure, that at each time we turn'd the
Key, the Air in the little Glaſs did mani
feſtly expand it ſelf and thruſt out the wa
ter, generally retaining a very protuberant
ſurface where it was contiguous to the re
maining Water. And when after divers
exſuctions of the Air in the Receiver,
that in the little Viol ſo dilated it ſelf as
to expel almoſt all the Water, it turn'd
up its mouth towards the ſurface of the
Water in the Jar, and there deliver'd a
large bubble, and then relapſed into its
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