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="013/01/144.jpg" pagenum="114"/>
              proportion theſe decrements of the Mer­
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              curial Cylinder did proceed: partly be­
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              cauſe (as we have already intimated) the
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              Quick ſilver was ſoon drawn below the
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              top of the Receiver: and partly becauſe,
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              upon its deſcent at each exſuction, it
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              would immediatly reaſcend a little up­
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              wards; either by reaſon of the leaking of
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              the Veſſel at ſome imperceptible hole or
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              other, or by reaſon of the motion of
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              Reſtitution in the Air, which, being ſome­
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              what compreſt by the fall as well as weight
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              of the Quick ſilver, would repell it a lit­
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              tle upwards, and make it vibrate a little up
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              and down, before they could reduce each
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              other to ſuch an
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              Æquilibrium
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              as both
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              might reſt in. </s>
              <s>But though we could not
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              hitherto make obſervations accurate e­
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              nough concerning the meaſures of the
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              Quick-ſilver's deſcent, to reduce them in­
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              to any
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              Hypotheſis,
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              yet would we not diſ­
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              courage any from attempting it: ſince, if it
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              could be reduc'd to a certainty, tis proba­
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              ble that the diſcovery would not be un­
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              uſeful. </s>
            </p>
            <p type="main">
              <s>And, to illuſtrate this matter a little
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              more, we will adde, That we made a ſhift
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              to try the Experiment in one of our above
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              mention'd ſmall Receivers, not containing </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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