Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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three Inches in Diameter (for, as it was
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ſaid in the deſcription of our Engine, the
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cavity of the Cylinder was no broader)
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was able, uncompreſſ'd, not only to ſuſtain,
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but even to drive up a weight of an hun
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dred and odde pounds: for beſides the
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weight of the whole Sucker it ſelf, which
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amounts to ſome pounds, the weights an
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nexed to it made up a hundred and three
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pounds, beſides an Iron Bar, that by con
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jecture weighed two pounds more; and
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yet all theſe together fall ſomewhat ſhort
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of the weight which we lately mention'd,
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the reſiſtance of the Air to have held ſu
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ſpended in the cavity of the Cylinder. </
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>And though (as hath been already ac
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knowledg'd) we cannot, peradventure,
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obtain by the recited means ſo exact an
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account as were to be wiſh'd, of what we
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would diſcover: Yet, if it ſerve us to
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ground Conjectures more approaching to
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the Truth, then we have hitherto met
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with, I hope it will be conſider'd (which
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a famous Poet judiciouſly ſays) </
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Eſt quoddam prodire tenus, ſi non da
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tur ultra.
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>Peradventure it will not be imperti-</
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