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

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="013/01/173.jpg" pagenum="143"/>
              or more above the ſurface of that in the
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              Veſſel; of which I know not whether it
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              will be needful to aſſign ſo obvious a cauſe
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              as that, though the little Air remaining
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              in the Receiver could not hinder a Cylin­
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              der of above an Inch high of Quick-ſilver
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              from ſubſiding; yet it might very well
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              be able, by its preſſure, to countervail the
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              weight of a Cylinder of a Foot long or
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              more, of a Liquor ſo much leſs ponderous
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              then Quick-ſilver, as Water is. </s>
              <s>And in
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              fine, to conclude our Experiment, when
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              the Water was drawn down thus low, we
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              found, that by letting in the outward Air,
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              it might be immediately impell'd up a­
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              gain to the higher parts of the Tube. </s>
            </p>
            <p type="main">
              <s>We will adde no more concerning this
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              Experiment, ſave that having try'd it in
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              one of our ſmall Receivers, we obſerv'd,
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              That upon the firſt exſuction of the Air
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              the Water did uſually ſubſide divers In­
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              ches, and at the ſecond (exſuction) fall
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              down much lower, ſubſiding ſometimes
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              near two Foot; as alſo that upon the let­
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              ting in of the Air from without, the Wa­
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              ter was impell'd up with very great ce­
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              lerity. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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