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

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    <archimedes>
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            <p type="main">
              <s>
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              then it ſelf, and why that which produc'd
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              the bubbles above mention'd ſhould not
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              be reſolutely ſaid to be nothing elſe then
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              a more active and ſpirituous part of the
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              Water, we ſhall, in order to the Elucida­
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              tion of this matter, ſubjoyn to what
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              was formerly deliver'd the following Ex­
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              periment. </s>
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            <p type="main">
              <s>WE recited in our nineteenth Ex­
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              periment, how by drawing moſt
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                <arrow.to.target n="marg24"/>
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              of the Air out of the Receiver, we made
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              the Water ſubſide by degrees in a Glaſs
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              not four Foot long: We ſhall now adde,
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              that in the like Experiment made in ſuch
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              a Tube, or a greater, it may be obſerv'd,
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              That when the Water begins to fall, there
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              will appear ſtore of bubbles faſten'd all a­
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              long to the ſides of the Glaſs; of which
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              bubbles, by the agitation of the Veſſel
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              conſequent upon pumping, there will ariſe
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              good numbers to the top of the Water,
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              and there break; and as the Cylinder of
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              Water is brought to be lower and lower,
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              ſo the bubbles will appear more numerous
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              in that part of the Tube which the Water
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              yet fills; and the nearer the ſurface of the
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              Water, in its deſcent, approaches to theſe </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>