Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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of the inverted Tube into the Veſſell'd
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Mercury, you may obſerve a bubble of
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Air to aſcend from the bottom of the
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Tube through the ſubſiding Quick-ſilver
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to the top; and almoſt always you may,
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if you look narrowly, take notice of a
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multitude of ſmall bubbles all along the
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inſide of the Tube betwixt the Quick
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ſilver & the glaſs: (not now to mention the
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Particles of Air that lye conceal'd in the
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very Body of the Mercury) Many of
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which, upon the Quick-ſilvers forſaking
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the upper part of the Tube, do break in
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to that deſerted ſpace where they finde
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little or no reſiſtance to their expanding
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of themſelves. </
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>Whether this be the rea
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ſon that upon the Application of warm
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Bodies to the emptyed part of the Tube,
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the ſubjacent Mercury would be depreſſ'd
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ſomewhat lower, we ſhall not determine;
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though it ſeem very probable, eſpecially
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ſince we found that upon the application
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of Linnen cloaths dipped in Water, to
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the ſame part of the Tube, the Quick
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ſilver would ſomewhat aſcend, as if the
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cold had condenſ'd the Impriſon'd Air,
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that preſſ'd upon it, into a leſſer room.
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>But that the deſerted ſpace is not wont to
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be totally devoid of Air, we were induc'd </
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