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

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            <pb pagenum="474"/>
            <p type="margin">
              <s>
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                <emph type="italics"/>
              De Cœlo
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              l. </s>
              <s>4. c.
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              </s>
              <s>6. t. </s>
              <s>44.</s>
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            <p type="main">
              <s>Here I note, that the Concluſions of
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              Ariſtotle
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              in generall are all
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              true, but methinks, that he applyeth them to particulars, in which
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              they have no place, as indeed they have in others, as for Example,
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              Wax is more eaſily diviſible than Lead, and Lead than Silver,
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              aſmuch as Wax receives all the terms more eaſiler than Lead, and
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              Lead than Silver. </s>
              <s>Its true, moreover, that a little quantity of
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              ver is eaſlier divided than a great Maſs: and all theſe Propoſitions
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              are true, becauſe true it is, that in Silver, Lead and Wax, there
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              is ſimply a Reſiſtance againſt Diviſion, and where there is the
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              lute, there is alſo the reſpective. </s>
              <s>But if as well in water as in Air,
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              there be no Renitence againſt ſimple Diviſion, how can we ſay, that
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              the water is eaſlier divided than the Air? </s>
              <s>We know not how to
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              tricate our ſelves from the Equivocation: whereupon I return to
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              anſwer, that Reſiſtance of abſolute Diviſion is one thing, and
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              ſiſtance of Diviſion made with ſuch and ſuch Velocity is another.
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              </s>
              <s>But to produce Reſt, and to abate the Motion, the Reſiſtance of
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              abſolute Diviſion is neceſſary; and the Reſiſtance of ſpeedy
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              viſion, cauſeth not Reſt, but ſlowneſs of Motion. </s>
              <s>But that as well
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              in the Air, as in water, there is no Reſiſtance of ſimple Diviſion, is
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              manifeſt, for that there is not found any Solid Body which divides
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              not the Air, and alſo the water: and that beaten Gold, or ſmall
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              duſt, are not able to ſuperate the Reſiſtance of the Air, is contrary
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              to that which Experience ſhews us, for we ſee Gold and Duſt to go
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              waving to and again in the Air, and at laſt to deſcend
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              wards, and to do the ſame in the water, if it be put therein, and
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              parated from the Air. </s>
              <s>And, becauſe, as I ſay, neither the water,
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              nor the Air do reſiſt ſimple Diviſion, it cannot be ſaid, that the water
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              reſiſts more than the Air. </s>
              <s>Nor let any object unto me, the
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              ple of moſt light Bodies, as a Feather, or a little of the pith of
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              der, or water-reed that divides the Air and not the water, and from
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              this infer, that the Ait is eaſlier diviſible than the water; for I ſay
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              unto them, that if they do well obſerve, they ſhall ſee the ſame
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              Body likewiſe divide the Continuity of the water, and ſubmerge in
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              part, and in ſuch a part, as that ſo much water in Maſs would weigh
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              as much as the whole Solid. </s>
              <s>And if they ſhal yet perſiſt in their doubt,
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              that ſuch a Solid ſinks not through inability to divide the water, I will
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              return them this reply, that if they put it under water, and then let it
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              go, they ſhall ſee it divide the water, and preſently aſcend with no leſs
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              celerity, than that with which it divided the Air in deſcending: ſo that
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              to ſay that this Solid aſcends in the Air, but that coming to the water,
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              it ceaſeth its Motion, and therefore the water is more difficult to be
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              divided, concludes nothing: for I, on the contrary, will propoſe them
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              a piece of Wood, or of Wax, which riſeth from the bottom of the
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              water, and eaſily divides its Reſiſtance, which afterwards being </s>
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          </chap>
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