Galilei, Galileo, Discourse concerning the natation of bodies, 1663

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb pagenum="423"/>
              ties departing, if it ſhall be more grave
                <emph type="italics"/>
              in ſpecie
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              than Water, fil but its
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              Poroſities with Water, and you ſhal have a Compoſt of Water and
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              of Wood more grave than Water, but not by vertue of the Water
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              ceived into and imbibed by the Poroſities, but of that Matter of the
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              Wood which remains when the Air is departed: and being ſuch it
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              ſhall, according to the Doctrine of
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              Archimedes,
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              goe to the bottom,
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              like as before, according to the ſame Doctrine it did ſwim.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1435"/>
                <emph type="italics"/>
              T
                <emph.end type="italics"/>
              he Authors
                <lb/>
              ſwer to the third
                <lb/>
              Objection.</s>
            </p>
            <p type="main">
              <s>As to that finally which preſents it ſelf in the fourth place, namely,
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                <arrow.to.target n="marg1436"/>
                <lb/>
              that the
                <emph type="italics"/>
              Ancients
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              have been heretofore confuted by
                <emph type="italics"/>
              Ariſtotle,
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              who
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              denying Poſitive and Abſolute Levity, and truely eſteeming all
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              dies to be grave, ſaid, that that which moved upward was driven by
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              the circumambient Air, and therefore that alſo the Doctrine of
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                <emph type="italics"/>
              Archimedes,
                <emph.end type="italics"/>
              as an adherent to ſuch an Opinion was
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              victed and confuted: I anſwer firſt, that
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              Signor Buonamico
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              in my
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              judgement hath impoſed upon
                <emph type="italics"/>
              Archimedes,
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              and deduced from his
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              words more than ever he intended by them, or may from his
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              ſitions be collected, in regard that
                <emph type="italics"/>
              Archimedes
                <emph.end type="italics"/>
              neither denies, nor
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              mitteth Poſitive Levity, nor doth he ſo much as mention it: ſo that
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              much leſs ought
                <emph type="italics"/>
              Buonamico
                <emph.end type="italics"/>
              to inferre, that he hath denyed that it
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              might be the Cauſe and Principle of the Aſcenſion of Fire, and other
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              Light Bodies: having but only demonſtrated, that Solid Bodies
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                <arrow.to.target n="marg1437"/>
                <lb/>
              more grave than Water deſcend in it, according to the exceſs of their
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              Gravity above the Gravity of that, he demonſtrates likewiſe, how the
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                <arrow.to.target n="marg1438"/>
                <lb/>
              leſs grave aſcend in the ſame Water, accordng to its exceſs of
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              ty, above the Gravity of them. </s>
              <s>So that the moſt that can be
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              ed from the Dem onſtration of
                <emph type="italics"/>
              Archimedes
                <emph.end type="italics"/>
              is, that like as the exceſs
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              of the Gravity of the Moveable above the Gravity of the Water, is
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              the Cauſe that it deſcends therein, ſo the exceſs of the Gravity of
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              the water above that of the Moveable, is a ſufficient Cauſe why it
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              cends not, but rather betakes it ſelf to ſwim: not enquiring
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              ther of moving upwards there is, or is not any other Cauſe contrary
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              to Gravity: nor doth
                <emph type="italics"/>
              Archimedes
                <emph.end type="italics"/>
              diſcourſe leſs properly than if one
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              ſhould ſay: If the South Winde ſhall aſſault the Barke with greater
                <lb/>
                <emph type="italics"/>
              Impetus
                <emph.end type="italics"/>
              than is the violence with which the Streame of the River
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              ries it towards the South, the motion of it ſhall be towards the North:
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              but if the
                <emph type="italics"/>
              Impetus
                <emph.end type="italics"/>
              of the Water ſhall overcome that of the Winde, its
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              motion ſhall be towards the South. </s>
              <s>The diſcourſe is excellent and
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              would be unworthily contradicted by ſuch as ſhould oppoſe it, ſaying:
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              Thou miſ-alledgeſt as Cauſe of the motion of the Bark towards the
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              South, the
                <emph type="italics"/>
              Impetus
                <emph.end type="italics"/>
              of the Stream of the Water above that of the
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              South Winde; miſ-alledgeſt I ſay, for it is the Force of the North
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              Winde oppoſite to the South, that is able to drive the Bark towards
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              the South. </s>
              <s>Such an Objection would be ſuperfluous, becauſe he which
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              alledgeth for Cauſe of the Motion the ſtream of the Water, denies not </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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