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

List of thumbnails

< >
241
241
242
242
243
243
244
244
245
245
246
246
247
247
248
248
249
249
250
250
< >
page |< < of 862 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="013/01/248.jpg" pagenum="218"/>
              cend into it, namely, Whether they mount
                <lb/>
              upwards by vertue of any ſuch
                <emph type="italics"/>
              poſitive le­
                <lb/>
              vity
                <emph.end type="italics"/>
              (as ſome Peripateticks ſpeak) ac­
                <lb/>
              quir'd together with their Aërial nature,
                <lb/>
              as inables them to pierce through part of
                <lb/>
              the Atmoſphere, and over-come its re­
                <lb/>
              ſiſtance. </s>
              <s>Or elſe, whether theſe ſteams
                <lb/>
              being once raiſ'd above the Earth by their
                <lb/>
              agitation, have their aſcent and ſuſtenta­
                <lb/>
              tion aloft, rather promoted then hindred
                <lb/>
              by the Air: as the inferior parts of that,
                <lb/>
              being thicker and heavier then the ſupe­
                <lb/>
              rior, the ſteams can more eaſily continue
                <lb/>
              for a while their agitation upwards then
                <lb/>
              downwards; And afterwards are by the
                <lb/>
              ſame fluidity and thickneſs of the Air,
                <lb/>
              carried to and fro in it, and kept from re­
                <lb/>
              lapſing to the Earth, as in the Sea water
                <lb/>
              the ſaline parts are kept from ſubſiding by
                <lb/>
              thoſe aqueous ones wherewith they are
                <lb/>
              aſſociated. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg36"/>
                <emph type="italics"/>
              Experi­
                <lb/>
              ment
                <emph.end type="italics"/>
              29</s>
            </p>
            <p type="main">
              <s>We hop'd to illuſtrate this matter, by
                <lb/>
              obſerving the motion of the ſmoke, pro­
                <lb/>
              ceeding from kindled or flaming Bodies in
                <lb/>
              our exhauſted Receiver. </s>
              <s>But as we for­
                <lb/>
              merly noted, upon the exſuction of the
                <lb/>
              Air, the ſmoking of thoſe Bodies pre­
                <lb/>
              ſently ceaſ'd. </s>
              <s>We had thoughts alſo of
                <lb/>
              conveying into our Pneumatical Glaſs a </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>