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

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              <s>
                <pb xlink:href="013/01/370.jpg" pagenum="340"/>
              to poſſeſs as much of the Cavity of the
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              Cheſt as the Lungs fill not up, being much
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              weaken'd, the external and contiguous
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              Air muſt neceſſarily preſs in at the open
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              Winde-Pipe into the Lungs, as finding
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              there leſs reſiſtance then any where elſe a­
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              bout it. </s>
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              <s>And hence (by the way) we may derive
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              a new aſſiſtance to judge of that famous
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              Controverſie diſputed among Naturaliſts
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              and Phyſitians, ever ſince
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              Galens
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              time,
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              ſome maintaining that the Cheſt, with the
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              contained Lungs, may be reſembled to a
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              pair of Bellows, which comes therefore
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              to be fill'd becauſe it was dilated: And o­
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              thers pleading to have the compariſon
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              made to a Bladder, which is therefore di­
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              lated becauſe it is fill'd. </s>
              <s>For as to the
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                <emph type="italics"/>
              Thorax,
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              it ſeems evident from what has
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              been lately ſaid, that it, like a pair of Bel­
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              lows, happens to be partly fill'd with Air,
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              but becauſe it was dilated: But as for the
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              Lungs themſelves, who want Fibres to
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              diſtend them, they may fitly enough be
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              compar'd to a Bladder; ſince they are di­
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              lated by being fill'd, namely, by that Air
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              which ruſhes into them upon the dilatation
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              of the Cheſt, in whoſe increaſed Cavity
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              it findes (as we freſhly noted) leſs reſiſt-</s>
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          </chap>
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