Salusbury, Thomas, Mathematical collections and translations (Tome I), 1667

List of thumbnails

< >
181
181 		182
182
183
183 		184
184
185
185 		186
186
187
187 		188
188
189
189 		190
190
< >
page |< < of 701 > >|
    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="040/01/181.jpg" pagenum="163"/>
              Earth, like as it carrieth the clouds along with it, ſo it tranſporteth
                <lb/>
              birds and every thing elſe which is pendent in the ſame; in ſo much
                <lb/>
              that as to the buſineſſe of keeping pace with the Earth, the birds
                <lb/>
              need take no care thereof, but for that work might ſleep
                <lb/>
              tually.</s>
            </p>
            <p type="main">
              <s>SAGR. </s>
              <s>That the Air can carry the clouds along with it, as
                <lb/>
              being matters eaſie for their lightneſſe to be moved and deprived
                <lb/>
              of all other contrary inclination, yea more, as being matters that
                <lb/>
              partake alſo of the conditions and properties of the Earth; I
                <lb/>
              prehend without any difficulty; but that birds, which as having
                <lb/>
              life, may move with a motion quite contrary to the diurnal, once
                <lb/>
              having ſurceaſed the ſaid motion, the Air ſhould reſtore them to
                <lb/>
              it, ſeems to me a little ſtrange, and the rather for that they are ſolid
                <lb/>
              and weighty bodies; and withal, we ſee; as hath been ſaid, ſtones
                <lb/>
              and other grave bodies to lie unmoved againſt the
                <emph type="italics"/>
              impetus
                <emph.end type="italics"/>
              of the
                <lb/>
              air; and when they ſuffer themſelves to be overcome thereby,
                <lb/>
              they never acquire ſo much velocity as the wind which carrieth
                <lb/>
              them.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>We aſcribe not ſo little force,
                <emph type="italics"/>
              Sagredus,
                <emph.end type="italics"/>
              to the moved
                <lb/>
              Air, which is able to move and bear before it ſhips full fraught,
                <lb/>
              to tear up trees by the roots, and overthrow Towers when it
                <lb/>
              moveth ſwiftly; and yet we cannot ſay that the motion of the
                <lb/>
              Air in theſe violent operations is neer ſo violent, as that of the
                <lb/>
              diurnal revolution.</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>You ſee then that the moved Air may alſo cotinue the
                <lb/>
              motion of projects, according to the Doctrine of
                <emph type="italics"/>
              Ariſtotle
                <emph.end type="italics"/>
              ; and
                <lb/>
              it ſeemed to me very ſtrange that he ſhould have erred in this
                <lb/>
              particular.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>It may without doubt, in caſe it could continue it ſelf,
                <lb/>
              but lik as when the wind ceaſing neither ſhips go on, nor trees are
                <lb/>
              blown down, ſo the motion in the Air not continuing after the
                <lb/>
              ſtone is gone out of the hand, and the Air ceaſing to move, it
                <lb/>
              followeth that it muſt be ſomething elſe beſides the Air that
                <lb/>
              keth the projects to move.</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>But how upon the winds being laid, doth the ſhip ceaſe
                <lb/>
              to move? </s>
              <s>Nay you may ſee that when the wind is down, and
                <lb/>
              the ſails furl'd, the veſſel continueth to run whole miles.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>But this maketh againſt your ſelf
                <emph type="italics"/>
              Simplicius,
                <emph.end type="italics"/>
              for that
                <lb/>
              the wind being laid that filling the ſails drove on the ſhip, yet
                <lb/>
              vertheleſſe doth it without help of the
                <emph type="italics"/>
              medium
                <emph.end type="italics"/>
              continue its
                <lb/>
              courſe.</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>It might be ſaid that the water was the
                <emph type="italics"/>
              medium
                <emph.end type="italics"/>
              which
                <lb/>
              carried forward the ſhip, and maintain'd it in motion.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>It might indeed be ſo affirmed, if you would ſpeak
                <lb/>
              quite contrary to truth; for the truth is, that the water, by </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
Impressum