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="013/01/086.jpg" pagenum="46"/>
              the Glaſs was weaken'd) the Impriſon'd
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              Air began to ſwell in the Bladder, and as
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              more and more of the Air in the Recei­
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              ver was, from time to time, drawn out; ſo
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              did that in the Bladder more and more ex­
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              pand it ſelf, and diſplay the folds of the
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              formerly flaccid Bladder: ſo that before we
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              had exhauſted the Receiver near ſo much
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              as we could, the Bladder appear'd as full
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              and ſtretched, as if it had been blown up
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              with a Quill. </s>
            </p>
            <p type="main">
              <s>And that it may appear that this plump­
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              neſs of the Bladder proceeded from the
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              ſurmounting of the debilitated Spring of
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              the ambient Air remaining in the Veſſel,
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              by the ſtronger Spring of the Air remain­
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              ing in the Bladder; we Return'd the Key
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              of the Stop-cock, and by degrees allow'd
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              the external Air to return into the Recei­
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              ver: Whereupon it happen'd, as was ex­
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              pected, that as the Air came in from with­
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              out, the diſturb'd Air in the Bladder, was
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              proportionably compreſſ'd into a narrow­
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              er room, and the ſides of the Bladder
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              grew flaccid, till the Receiver having re­
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              admitted its wonted quantity of Air, the
                <lb/>
              Bladder appear'd as full of wrinkles and
                <lb/>
              cavities as before. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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