Galilei, Galileo, The systems of the world, 1661

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="065/01/155.jpg" pagenum="147"/>
              circle C I, the circumference ſhall be double to the circumference,
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              and every arch of the greater circle double to every like arch of
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              the leſſer; and conſequently, the half of the arch of the greater
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              circle, equal to the whole arch of the leſſe. </s>
              <s>And becauſe the
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              gle C E I made in the centre E of the leſſer circle, and which
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              ſteth upon the arch C I, is double the angle C A D, made in the
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              centre A of the greater circle, to which the arch C D ſubtendeth;
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              therefore the arch C D is half of the arch of the greater circle like
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              to the arch C I, and therefore the two arches C D and C I are
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              qual; and in the ſame manner we may demonſtrate of all their
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              parts. </s>
              <s>But that the buſineſs, as to the motion of deſcending grave
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              bodies, proceedeth exactly thus, I will not at this time affirm; but
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              this I will ſay, that if the line deſcribed by the cadent moveable
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              be not exactly the ſame with this, it doth extream neerly reſemble
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              the ſame.</s>
            </p>
            <p type="main">
              <s>SAGR. </s>
              <s>But I,
                <emph type="italics"/>
              Salviatus,
                <emph.end type="italics"/>
              am juſt now conſidering another
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                <arrow.to.target n="marg333"/>
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              ticular very admirable; and this it is; That admitting theſe
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              ſiderations, the right motion doth go wholly ^{*} mounting, and that
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                <arrow.to.target n="marg334"/>
                <lb/>
              Nature never makes uſe thereof, ſince that, even that that uſe,
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              which was from the beginning granted to it, which was of
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              cing the parts of integral bodies to their place, when they were
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              ſeparated from their whole, and therefore conſtituted in a
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              ved diſpoſition, is taken from it, and aſſigned to the circular
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              motion.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg333"/>
                <emph type="italics"/>
              Right motion
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              ſeemeth wholly
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              cluded in nature.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg334"/>
              * Vadia del tutto a
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              monte,
                <emph type="italics"/>
              rendered in
                <lb/>
              the Latixe
                <emph.end type="italics"/>
                <lb/>
              no peſſum eat.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>This would neceſſarily follow, if it were concluded
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              that the Terreſtrial Globe moveth circularly; a thing, which I
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              pretend not to be done, but have onely hitherto attempted, as I
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              ſhall ſtill, to examine the ſtrength of thoſe reaſons, which have
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              been alledged by Philoſophers to prove the immobility of the
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              Earth, of which this firſt taken from things falling
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              larly, hath begat the doubts, that have been mentioned; which
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              I know not of what force they may have ſeemed to
                <emph type="italics"/>
              Simplicius
                <emph.end type="italics"/>
              ;
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              and therefore before I paſſe to the examination of the remaining
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              arguments, it would be convenient that he produce what he hath
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              to reply to the contrary.</s>
            </p>
            <p type="main">
              <s>SIMP. </s>
              <s>As to this firſt, I confeſſe indeed that I have heard
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              ſundry pretty notions, which I never thought upon before, and
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              in regard they are new unto me, I cannot have anſwers ſo ready
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              for them, but this argument taken from things falling
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              cularly, I eſteem it not one of the ſtrongeſt proofs of the
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              lity of the Earth; and I know not what may happen touching the
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              ſhots of great Guns, eſpecially thoſe aimed contrary to the
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              nal motion.</s>
            </p>
            <p type="main">
              <s>SAGR. </s>
              <s>The flying of the birds as much puzzleth me as the
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              objection of the Gun-ſhot, and all the other experiments above </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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