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

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    <archimedes>
      <text>
        <body>
          <chap>
            <pb xlink:href="013/01/066.jpg" pagenum="26"/>
            <p type="main">
              <s>By theſe two differing ways, my Lord,
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              may the Spring of the Air be explicated.
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              </s>
              <s>But though the former of them be that,
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              which by reaſon of its ſeeming ſomewhat
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              more eaſie, I ſhall for the moſt part make
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              uſe of in the following Diſcourſe: yet
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              am I not willing to declare peremptorily
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              for either of them, againſt the other. </s>
              <s>And
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              indeed, though I have in another Treatiſe
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              endeavoured to make it probable, that the
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              returning of Elaſtical Bodies (if I may ſo
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              call them) forcibly bent, to their former
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              poſition, may be Mechanically explica­
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              ted: Yet I muſt confeſs, that to deter­
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              mine whether the motion of Reſtitution
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              in Bodies, proceed from this, That the
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              parts of a Body of a peculiar Structure
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              are put into motion by the bending of the
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              ſpring, or from the endeavor of ſome ſub­
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              tle ambient Body, whoſe paſſage may be
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              oppoſ'd or obſtructed, or elſe it's preſſure
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              unequally reſiſted by reaſon of the new
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              ſhape or magnitude, which the bending of
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              a Spring may give the Pores of it: To
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              determine this, I ſay, ſeems to me a mat­
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              ter of more difficulty, then at firſt ſight
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              one would eaſily imagine it. </s>
              <s>Wherefore
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              I ſhall decline medling with a ſubject,
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              which is much more hard to be explica-</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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