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

List of thumbnails

< >
231
231 		232
232
233
233 		234
234
235
235 		236
236
237
237 		238
238
239
239 		240
240
< >
page |< < of 862 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="013/01/236.jpg" pagenum="206"/>
              rous, that could well be made without
                <lb/>
              ſome ſuch Engine as ours) ſome things
                <lb/>
              might be ſpeciouſly enough alleadg'd; we
                <lb/>
              thought fit to make a tryal or two, in or­
                <lb/>
              der to the Diſcovery of what the Air does
                <lb/>
              in conveying of ſounds, reſerving divers
                <lb/>
              other Experiments tryable in our Engine
                <lb/>
              concerning ſounds, till we can obtain more
                <lb/>
              leaſure to proſecute them. </s>
              <s>Conceiving it
                <lb/>
              then the beſt way to make our tryal with
                <lb/>
              ſuch a noiſe as might not be loud enough
                <lb/>
              to make it difficult to diſcern ſlighter va­
                <lb/>
              riations in it, but rather might be, both
                <lb/>
              laſting, that we might take notice by what
                <lb/>
              degrees it decreaſ'd; and ſo ſmall, that
                <lb/>
              it could not grow much weaker with­
                <lb/>
              out becoming imperceptible. </s>
              <s>We took
                <lb/>
              a Watch, whoſe Caſe we open'd, that
                <lb/>
              the contain'd Air might have free egreſs
                <lb/>
              into that of the Receiver. </s>
              <s>And this Watch
                <lb/>
              was ſuſpended in the cavity of the Veſſel
                <lb/>
              onely by a Pack-thred, as the unlikelieſt
                <lb/>
              thing to convey a ſound to the top of the
                <lb/>
              Receiver: And then cloſing up the Veſ­
                <lb/>
              ſel with melted Plaiſter, we liſten'd near
                <lb/>
              the ſides of it, and plainly enough heard
                <lb/>
              the noiſe made by the ballance. </s>
              <s>Thoſe al­
                <lb/>
              ſo of us, that watch'd for that Circum­
                <lb/>
              ſtance, obſerv'd, that the noiſe ſeem'd to </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
Impressum