Boyle, Robert, New experiments physico-mechanicall, touching the spring of the air and its effects, 1660

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              And though the Quick-ſilver were by
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              this means brought to appear a very cloſe
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              and lovely Metalline Cylinder, not inter­
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              rupted by interſperſ'd bubbles as before;
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              yet having cauſ'd the Air to be again
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              drawn out of the Receiver, I could per­
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              ceive ſeveral little bubbles to diſcloſe
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              themſelves, faſten'd to the inſide of the
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              Tube, near the bottom of it; and having
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              purpoſely watch'd one or two of the chief­
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              eſt, I had the pleaſure to obſerve, that
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              though they grew bigger and bigger as
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              the ſurface of the Mercurial Cylinder fell
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              nearer and nearer to them, ſo as that at
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              length they ſwell'd into a conſpicuous
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              bulk; yet upon the wary letting in the
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              Air upon them, they did not break, but
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              preſently ſhrunk up into a littleneſs that
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              render'd them inconſpicuous. </s>
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              <s>Whence it ſeems very probable, if not
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              certain, that even in the cloſeſt and moſt
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              ponderous Liquors, and therefore much
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              more in Water, there may lurk undiſcern­
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              able parcels of Air, capable, upon the
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              removal of the preſſure of the ambient
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              Air (though but in part) and that of the
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              Liquor wherein it lurks, to produce con­
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              ſpicuous bubbles. </s>
              <s>And conſequently, if
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              it ſeem inconvenient to admit an Elaſtical </s>
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