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

Table of figures

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              terly unable to break one ſomewhat thic­
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              ker, within whoſe cavity it was impri­
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              ſon'd; whereas Air pent up and agitated
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              by heat is able to perform ſo much more
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              conſiderable effects, that (not to mention
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              thoſe of Rarefaction that are more obvi­
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              ous) the Learned Jeſuit
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              Cabæus
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              (he that
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              writ of the Load-ſtone) relates, That he
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              ſaw a Marble Pillar (ſo vaſt, that three
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              men together with diſplay'd arms could
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              not imbrace it, and that 1000 Yoke of
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              Oxen drawing it ſeveral ways with all
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              their ſtrength, could not have torn it
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              aſſunder) quite broken off in the midſt,
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              by reaſon of ſome Wood, which hap­
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              pening to be burnt juſt by the Pillar, the
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              heat proceeding from the neighboring
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              Fire, ſo rarified ſome Air or Spirituous
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              Matter which was ſhut up in the cavities
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              of the Marble, that it broke through the
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              ſolid Body of the Stone to obtain room
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              to expand it ſelf. </s>
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              : Nicoi:
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              Cab: lib:
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              4.
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              Meteo
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              A­
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              <s>I remember I have taken notice that
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              probably the reaſon why the included Air
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              did not break the hermetically ſeal'd Bub­
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              bles that remain'd intire in our emptyed
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              Receiver, was, That the Air, being ſome­
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              what rarefied by the Flame imploy'd to
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              cloſe the Glaſs, its Spring, upon the re-</s>
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