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

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb pagenum="469"/>
              the ſaid calid Atomes aſcend with much greater Force and Velocity
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              through the Air, than through the water. </s>
              <s>And if this be ſo, as I
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              ly believe it is, the Objection of
                <emph type="italics"/>
              Ariſtotle
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              in my judgement ſeems to
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              give occaſion of ſuſpecting, that he may poſſibly be deceived in more
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              than one particular: Firſt, becauſe thoſe calid Atomes, (whether
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              they be Fiery Corpuſcles, or whether they be Exhalations, or in
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              ſhort, whatever other matter they be, that aſcends upwards through
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              the Air) cannot be believed to mount faſter through Air, than
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              through water: but rather on the contrary, they peradventure move
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              more impetuouſly through the water, than through the Air, as hath
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              been in part demonſtrated above. </s>
              <s>And here I cannot finde the
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              ſon, why
                <emph type="italics"/>
              Ariſtotle
                <emph.end type="italics"/>
              ſeeing, that the deſeending Motion of the ſame
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              Moveable, is more ſwift in Air, than in water, hath not advertiſed
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              us, that from the contrary Motion, the contrary ſhould neceſſarily
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              follow; to wit, that it is more ſwift in the water, than in the Air: for
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              ſince that the Moveable which deſcendeth, moves ſwifter through
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              the Air, than through the water, if we ſhould ſuppoſe its Gravity
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              gradually to diminiſh, it would firſt become ſuch, that deſcending
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              ſwiftly through the Air, it would deſcend but ſlowly through the
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              water: and then again, it might be ſuch, that deſcending in the
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              Air, it ſhould aſcend in the water: and being made yet leſs grave,
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              it ſhall aſcend ſwiftly through the water, and yet deſcend likewiſe
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              through the Air: and in ſhort, before it can begin to aſcend, though
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              but ſlowly through the Air, it ſhall aſcend ſwiftly through the water:
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              how then is it true, that aſcending Moveables move ſwifter through
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              the Air, than through the water?</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1536"/>
                <emph type="italics"/>
              Democritus
                <emph.end type="italics"/>
                <lb/>
              futed by
                <emph type="italics"/>
                <lb/>
              ſtotle,
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              text 43.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1537"/>
                <emph type="italics"/>
              Ariſtotles
                <emph.end type="italics"/>
                <lb/>
              futation of
                <emph type="italics"/>
                <lb/>
              mocritus
                <emph.end type="italics"/>
              refuted
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              by the Author.</s>
            </p>
            <p type="main">
              <s>That which hath made
                <emph type="italics"/>
              Ariſtotle
                <emph.end type="italics"/>
              believe, the Motion of Aſcent to be
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              ſwifter in Air, than in water, was firſt, the having referred the
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              Cauſes of ſlow and quick, as well in the Motion of Aſcent, as of
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              Deſcent, only to the diverſity of the Figures of the Moveable, and to
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              the more or leſs Reſiſtance of the greater or leſſer Craſſitude, or
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              rity of the
                <emph type="italics"/>
              Medium
                <emph.end type="italics"/>
              ; not regarding the compariſon of the Exceſſes
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              of the Gravities of the Moveables, and of the
                <emph type="italics"/>
              Mediums
                <emph.end type="italics"/>
              : the which
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              notwithſtanding, is the moſt principal point in this affair: for if the
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              augmentation and diminution of the Tardity or Velocity, ſhould
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              have only reſpect to the Denſity or Rarity of the
                <emph type="italics"/>
              Medium,
                <emph.end type="italics"/>
              every Body
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              that deſcends in Air, would deſcend in water: becauſe whatever
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              difference is found between the Craſſitude of the water, and that of
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              the Air, may well be found between the Velocity of the ſame
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              able in the Air, and ſome other Velocity: and this ſhould be its
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              proper Velocity in the water, which is abſolutely falſe. </s>
              <s>The other
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              occaſion is, that he did believe, that like as there is a poſitive and
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              trinſecall Quality, whereby Elementary Bodies have a propenſion
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              of moving towards the Centre of the Earth, ſo there is another </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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