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

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      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="013/01/292.jpg" pagenum="262"/>
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              librium
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              with two weights, whereof the
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              one was of Lead, the other of Cork. </s>
              <s>And
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              having evacuated the Receiver, we obſer­
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              ved, that both upon the exſuction, and
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              after the return of the Air, the Cork did
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              manifeſtly preponderate, and much more
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              a while after the Air had been let in again,
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              then whilſt it was kept out. </s>
              <s>Wherefore,
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              in the room of the Cork, we ſubſtituted
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              a piece of Char-coal, as leſs likely to im­
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              bibe any moiſture from the Air, but the
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              event proved much the ſame with that
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              newly related: So that this Experiment
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              ſeems more liable to Caſualties then any,
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              excepting one we have made in our En­
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              gine. </s>
              <s>And as it is difficult to prevent
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              them, ſo it ſeems not very eaſie to diſ­
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              cover the cauſes of them, whereof we
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              ſhall therefore at preſent forbear mention­
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              ing our Conjectures. </s>
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            <p type="main">
              <s>SOme Learned Mathematicians have of
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                <arrow.to.target n="marg44"/>
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              late ingenioùſly endeavored to reduce
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              Filters to
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              Siphons;
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              but ſtill the true cauſe
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              of the aſcenſion of Water, and other Li­
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              quors, both in
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              Siphons
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              and in Filtration,
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              needing (for ought we have yet found) a
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              clearer Diſcovery and Explication, we </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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