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

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              <s>
                <pb pagenum="422"/>
              goes to the bottom, if it be filled with water; of which he in the
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              lowing Chapter, which is the 30 of the fifth Book copiouſly
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              eth: but I (ſpeaking alwayes without diminution of his ſingular
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              Learning) dare in defence of
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              Archimedes
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              deny this experiment, being
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              certain that a piece of Wood which by its nature ſinks not in Water,
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              ſhall not ſinke though it be turned and converted into the forme of
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              ny Veſſell whatſoever, and then filled with Water: and he that would
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              readily ſee the Experiment in ſome other tractable Matter, and that is
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              eaſily reduced into ſeveral Figures, may take pure Wax, and
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              king it firſt into a Ball or other ſolid Figure, let him adde to it ſo
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              much Lead as ſhall juſt carry it to the bottome, ſo that being a graine
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              leſs it could not be able to ſinke it, and making it afterwards into
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              the forme of a Diſh, and filling it with Water, he ſhall finde that
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              out the ſaid Lead it ſhall not ſinke, and that with the Lead it ſhall
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              ſcend with much ſlowneſs: & in ſhort he ſhall ſatisfie himſelf, that the
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              Water included makes no alteration. </s>
              <s>I ſay not all this while, but that
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              its poſſible of Wood to make Barkes, which being filled with water,
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              ſinke; but that proceeds not through its Gravity, encreaſed by the
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              Water, but rather from the Nailes and other Iron Workes, ſo that
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              it no longer hath a Body leſs grave than Water, but one mixt of Iron
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              and Wood, more grave than a like Maſſe of Water. </s>
              <s>Therefore let
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                <emph type="italics"/>
              Signor Buonamico
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              deſiſt from deſiring a reaſon of an effect, that is
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              not in nature: yea if the ſinking of the Woodden Veſſell when its full
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              of Water, may call in queſtion the Doctrine of
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              Archimedes,
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              which
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              he would not have you to follow, is on the contrary conſonant and
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              greeable to the Doctrine of the Peripateticks, ſince it aptly aſſignes a
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              reaſon why ſuch a Veſſell muſt, when its full of Water, deſcend to the
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              bottom; converting the Argument the other way, we may with
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              ſafety ſay that the Doctrine of
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              Archimedes
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              is true, ſince it aptly
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              eth with true experiments, and queſtion the other, whoſe
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              ons are faſtened upon etroneouſs Concluſions. </s>
              <s>As for the other point
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              hinted in this ſame Inſtance, where it ſeemes that
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              Benonamico
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              ſtands the ſame not only of a piece of wood, ſhaped in the forme of a
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              Veſſell, but alſo of maſſie Wood, which filled,
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              ſcilicet,
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              as I believe, he
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              would ſay, ſoaked and ſteeped in Water, goes finally to the bottom
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              that happens in ſome poroſe Woods, which, while their Poroſity is
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              pleniſhed with Air, or other Matter leſs grave than Water, are
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              ſes ſpecificially leſs grave than the ſaid Water, like as is that Viall of
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              Glaſs whileſt it is full of Air: but when, ſuch light Matter
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              ing, there ſucceedeth Water into the ſame Poroſities and Cavities,
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              there reſults a compound of Water and Glaſs more grave than a like
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              Maſs of Water: but the exceſs of its Gravity conſiſts in the Matter
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              of the Glaſs, and not in the Water, which cannot be graver than it
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              ſelf: ſo that which remaines of the Wood, the Air of its </s>
            </p>
          </chap>
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      </text>
    </archimedes>
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