Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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we are wont to think uncompreſſ'd, we
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cauſ'd a Bladder dry, well ty'd and blown
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moderately full, to be hung in the Recei
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ver by one end of a ſtring, whoſe other
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end was faſtned to the inſide of the Co
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ver: and upon drawing out the ambient
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Air, that preſſ'd on the Bladder; the in
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ternal Air not finding the wonted reſiſt
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ance, firſt ſwell'd and diſtended the Blad
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der, and then broke it, with ſo wide and
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crooked a rent, as if it had been forcibly
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torn aſſunder with hands. </
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<
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>After which a
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ſecond Bladder being convey'd in, the Ex
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periment was repeated with like ſucceſs:
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And I ſuppoſe it will not be imagin'd that
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in this caſe the Bladder was broken by its
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own Fibres, rather then by the Impri
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ſon'd Air. </
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Experi
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ment
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5.</
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<
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>And of this Experiment theſe two
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Phæ
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nomena
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may be taken notice of: The one,
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that the Bladder at its breaking gave a
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great report, almoſt like a Craker: And
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the other, That the Air contain'd in the
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Bladder, had the power to break it with
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the mention'd Impetuoſity, long before
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the ambient Air was, all or near all, drawn
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out of the Receiver. </
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<
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>But, to verifie what we ſay in another
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Diſcourſe, where we ſhow, That even </
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