Borro, Girolamo, De motu gravium et levium, 1575

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              <p type="main">
                <s id="s.000716">
                  <pb pagenum="105" xlink:href="011/01/125.jpg"/>
                  <emph type="italics"/>
                ex qua conflantur, naturale motus principium in eis exiſtat.
                  <emph.end type="italics"/>
                </s>
              </p>
              <p type="main">
                <s id="s.000717">
                  <emph type="italics"/>
                Huic reſpondendum cenſemus horum naturalium corpo­
                  <lb/>
                rum duobus modis naturales motus conſiderari poſſe: ſemel
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                ratione naturalis propenſionis eorumdem, quæ naturalis pro­
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                penſio grauium, & leuium naturalem formam immediatè
                  <lb/>
                conſequitur; huius naturalis inclinationis ratione vtrorumque
                  <lb/>
                motus eſt naturalis: Grauitas enim, & leuitas, vt & qualita­
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                tes elementorum primæ non ſunt formæ, & non ſunt princi­
                  <lb/>
                pia intrinſeca elementorum prima; ideo non ſunt propriæ, ac
                  <lb/>
                veræ elementorum naturæ ex Phyſicorum libro ſecundo. </s>
                <s id="s.000718">Sed
                  <lb/>
                quoniam grauitas, & leuitas elementorum naturas neceſſariò
                  <lb/>
                conſequuntur, in elementis ſecundum naturam ineſſe optimo
                  <lb/>
                iure dicuntur: quemadmodum etiam motus, qui ex ipſis pri­
                  <lb/>
                mis atque immeditatis elementorum principiis
                  <expan abbr="manãt">manant</expan>
                , ſecun­
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                dum naturam inſunt in elementis: ignis enim ſecundum na­
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                turam leuis eſt; ideoque ſecundum naturam ſurſum euolat;
                  <lb/>
                At grauem è contrario ſecundum naturam terram eſſe co­
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                gnoſcimus, item que pari modo ad centrum tendere iuxta na­
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                turam non dubitamus.
                  <emph.end type="italics"/>
                </s>
              </p>
              <p type="main">
                <s id="s.000719">
                  <emph type="italics"/>
                Motus ergo grauium, & leuium corporum ſimplicium, ex
                  <lb/>
                grauitate, ac leuitate naſcentes, grauibus, & leuibus, ſecun­
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                dum naturam inſunt grauitatis, & leuitatis ratione, quæ licet
                  <lb/>
                propriæ, & veræ naturæ non ſint, elementorum tamen natu­
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                ras neceſſariò conſequuntur: etenim ſæpe numero, cum rerum
                  <lb/>
                naturæ propriis nominibus careant, vtimur in eis explicandis,
                  <lb/>
                vocabulis accidentium; quæ notiora ſicuti ſunt, & noſtris ſen
                  <lb/>
                ſibus magis familiaria: à quibus intellectus cognitionem oriri
                  <lb/>
                deprehendimus, & hac ratione motus hic, qui ex grauitate, et
                  <lb/>
                leuitate proficiſcitur, naturalis dicitur: non quod grauitas,
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                & leuitas ſint corporum grauium, & leuium formæ, ac na-
                  <emph.end type="italics"/>
                </s>
              </p>
            </subchap1>
          </chap>
        </body>
      </text>
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