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="013/01/307.jpg" pagenum="277"/>
              of by curious Men, may be drawn to
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              countenance their erroneous Opinion, who
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              would fain perſwade us, That Glaſs is
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              penetrable by Air properly ſo called.</s>
              <s>Our
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              Experiment was briefly this: We were
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              diſtilling a certain ſubſtance, that much a-
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              bounded with ſubtle Spirits and volatile
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              Salt, in a ſtrong Earthen-veſſel of an un-
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              uſual ſhape, to which was luted a large
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              Receiver, made of the courſer ſort of
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              Glaſs, (which the Trades-men are wont
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              to call Green-glaſs) but in our abſence,
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              the Fire, though it were to be very ſtrong,
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              was by the negligence or miſtake of thoſe
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              we appointed to attend it, ſo exceſſively
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              increaſ'd, that when we came back to the
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              Fornace we found the Spirituous and Sa-
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              line Corpuſcles pour'd out (if I may ſo
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              call it) ſo hot, and ſo copiouſly into the
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              Receiver, that they made it all opacous,
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              and more likely to flie in pieces, then fit
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              to be touch'd.</s>
              <s>Yet, being curious to ob-
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              ſerve the effects of a Diſtillation, prſe-
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              cuted with ſo intenſe and unuſual degree
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              of heat, we ventur'd to come near, and
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              obſerv'd among other things, that on the
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              out-ſide of the Receiver, at a great di-
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              ſtance from the juncture, there was ſetled
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              a round whitiſh Spot or two, which at</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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