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

Table of figures

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              For firſt we may know the capacity of the
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              Receiver wherein the Experiment is
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              made, ſince, by filling it with water, we
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              may eaſily compute how many Quarts, or
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              Meaſures of any other denomination, it
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              contains of Air; which Air, when ſhut
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              up in the Veſſel, may be ſuppoſ'd to have
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              a preſſure equal to that of the Atmo­
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              ſphere; ſince it is able to keep the Quick­
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              ſilver in the Tube from falling any lower
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              then it did in the free and open Air. </s>
              <s>Next
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              here is given us the capacity of the braſs
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              Cylinder empty'd by the drawing down
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              of the Sucker (its bore and height being
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              mention'd in the deſcription of our Pump)
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              whereby we may come to know how
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              much of the Air contain'd in the Recei­
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              ver is drawn out at the firſt ſuck. </s>
              <s>And
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              we may alſo eaſily define, either in weight
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              or cubick meaſures the Cylinder of
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              Quick-ſilver that anſwers to the Cy­
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              linder of Air lately mention'd (that
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              Mercuriall Cylinder being in our En­
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              gine computable by deducting from
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              the entire altitude or that Cylinder of
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              Quick-ſilver, the altitude at which it reſts
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              upon the firſt exſuction.) But though, if
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              this Experiment were very watchfully
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              try'd in Veſſels of ſeveral ſizes, and the </s>
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