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="013/01/093.jpg" pagenum="53"/>
              parcel of Air might by this its own Spring
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              be dilated. </s>
              <s>And though we were not pro­
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              vided of Inſtruments fit to meaſure the
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              dilatation of the Air any thing accurately,
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              yet becauſe an imperfect meaſure of it was
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              more deſireable then none at all, we de­
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              viſ'd the following Method as very eaſily
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              practicable. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg8"/>
                <emph type="italics"/>
              Experi­
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              ment
                <emph.end type="italics"/>
              6.</s>
            </p>
            <p type="main">
              <s>We took a limber Lambs Bladder
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              which was thorowly wetted in fair Water,
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              that the ſides of it being ſqueez'd roge­
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              ther, there might be no Air left in its
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              folds: (as indeed we could not afterwards
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              upon tryal diſcern any) The neck of this
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              Bladder was ſtrongly tyed about that of
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              a ſmall Glaſs, (capable of holding five
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              full drachmes of Water) the Bladder be­
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              ing firſt ſo compreſſ'd, that all the inclu­
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              ded Air was onely in the Glaſs, without
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              being preſſ'd there; then the Pump be­
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              ing ſet awork after a few exſuctions, the
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              Air in the little Viol began to dilate it
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              ſelf and produce a ſmall Tumor in the
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              Neck of the Bladder; and as the ambi­
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              ent Air was more and more drawn away,
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              ſo the included Air penetrated further and
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              further into the Bladder, and by degrees
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              lifted up the ſides and diſplay'd its folds,
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              till at length it ſeem'd to have blown it </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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