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

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb pagenum="438"/>
              or of Ebony, ſwims by vertue of its dilated & broad Figure: for the
                <lb/>
              truth is, that it bares up without ſubmerging, becauſe that that which
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              is put in the water, is not pure Braſs or ſimple Ebony, but an
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              gregate of Braſs and Air, or of Ebony and Air. </s>
              <s>And, this is not
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              contrary unto my Concluſion, the which, (having many a time ſeen
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              Veſſels of Mettall, and thin pieces of diverſe grave Matters float, by
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              vertue of the Air conjoyned with them) did affirm, That Figure
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              was not the Cauſe of the Natation or Submerſion of ſuch Solids as
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              were placed in the water. </s>
              <s>Nay more, I cannot omit, but muſt
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              my Antagoniſts, that this new conceit of denying that the
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              cies of the Board ſhould be bathed, may beget in a third perſon an
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              opinion of a poverty of Arguments of defence on their part, ſince
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              that ſuch bathing was never inſiſted upon by them in the beginning
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              of our Diſpute, and was not queſtioned in the leaſt, being that the
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              Originall of the diſcourſe aroſe upon the ſwiming of Flakes of Ice,
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              wherein it would be ſimplicity to require that their Superficies might
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              bedry: beſides, that whether theſe pieces of Ice be wet or dry they
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              alwayes ſwim, and as the Adverſaries ſay, by reaſon of the Figure. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1475"/>
              Water hath
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              no Gravity in
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              Water.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1476"/>
              Water
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              miniſheth the
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              Gravity of
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              lids immerged
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              therein.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1477"/>
              The
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              ment of a Braſs
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              Ketle ſwiming
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              when empty, &
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              ſinking when
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              full, alledged to
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              prove that water
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              gravitates in
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              water, anſwered.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1478"/>
              An Ocean
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              ficeth not to
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              ſink a Veſſel
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              cifically leſs
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              grave than
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              ter.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1479"/>
              Air, the Cauſe
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              of the Natation
                <lb/>
              of empty Veſſels
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              of Matters
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              ver
                <emph type="italics"/>
              in ſpecie
                <emph.end type="italics"/>
              than
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              the water.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1480"/>
              Neither Figure,
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              nor the breadth
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              of Figure, is the
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              Cauſe of
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              tion.</s>
            </p>
            <p type="main">
              <s>Some peradventure, by way of defence, may ſay, that wetting the
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              Board of Ebony, and that in the ſuperiour Superficies, it would,
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              though of it ſelf unable to pierce and penetrate the water, be born
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              downwards, if not by the weight of the additionall water, at
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              by that deſire and propenſion that the ſuperiour parts of the water
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              have to re-unite and rejoyn themſelves: by the Motion of which
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              parts, the ſaid Board cometh in a certain manner, to be depreſſed
                <lb/>
                <lb/>
                <arrow.to.target n="marg1481"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1481"/>
              The Bathed
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              Solid deſcends
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              not out of any
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              affectation of
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              nion in the upper
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              parts of the
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              ter.</s>
            </p>
            <p type="main">
              <s>This weak Refuge will be removed, if we do but conſider, that
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              the repugnancy of the inferiour parts of the water, is as great against
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              Diſ-union, as the Inclination of its ſuperiour parts is to union: nor can
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              the uper unite themſelves without depreſſing the board, nor can it
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              deſcend without diſuniting the parts of the nether Water: ſo that
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              it doth follow, by neceſſary conſequence, that for thoſe reſpects, it ſhall
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              not deſcend. </s>
              <s>Moreover, the ſame that may be ſaid of the upper
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              parts of the water, may with equall reaſon be ſaid of the nethe,
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              namely, that deſiring to unite, they ſhall force the ſaid Board
                <lb/>
              upwards.</s>
            </p>
            <p type="main">
              <s>Happily, ſome of theſe Gentlemen that diſſent from me, will
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              der, that I affirm, that the contiguous ſuperiour Air is able to
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              that Plate of
                <emph type="italics"/>
              B
                <emph.end type="italics"/>
              raſs or of Silver, that ſtayeth above water; as if I
                <lb/>
                <arrow.to.target n="marg1482"/>
                <lb/>
              would in a certain ſence allow the Air, a kind of Magnetick vertue
                <lb/>
              of ſuſtaining the grave
                <emph type="italics"/>
              B
                <emph.end type="italics"/>
              odies, with which it is contiguous. </s>
              <s>To
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              tisſie all I may, to all doubts, I have been conſidering how by ſome
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              other ſenſible Experiment I might demonſtrate, how truly that little
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              contiguous and ſuperiour Air ſuſtaines thoſe Solids, which being by </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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