Borro, Girolamo, De motu gravium et levium, 1575

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              <p type="main">
                <s id="s.000226">
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                nuncupantur terra, aqua, aer, & ignis: quia tamen duas
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                motiones ſimplices habent, duasque omnine ſimplices qualita­
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                tes, grauitatem certè & leuitatem, duo eſſe ſimplicia corpora
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                dicuntur, quæ recto motu cientur: id ex quatuor qualitatum
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                coniugatione Ariſtoteles probat libro ſecundo de ortu, & in­
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                teritu particula decimaſexta, vigeſimatertia, & trigeſima­
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                quarta; hæc non niſi quatuor modis coniungi poſſunt: calidi­
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                tas, & ſiccitas in igne: caliditas, & humiditas in aere: frigi­
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                ditas, & humiditas in aqua: frigiditas, & ſiccitas in terra:
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                frigiditas, & caliditas, humiditas, & ſiccitas, quod eſt contra­
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                riorum
                  <expan abbr="propriũ">proprium</expan>
                , ſe vicissim deſtruunt: quam ob rem nec quin­
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                tum, nec ſextum elementum faciunt: ergo quatuor tan­
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                tum ſunt elementa, vt probare polliciti ſumus.
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            <subchap1>
              <p type="head">
                <s id="s.000227">Elementa vi, naturaque propria de loco ad lo­
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                cum concitari. </s>
                <s id="s.000228">Caput VIII.</s>
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                <s id="s.000229">QVONIAM
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                veterrimi illi Philoſophi, à quibus vni­
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                uerſa Philoſophia manauit, hanc veritatem minimè
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                aſſecuti fuerunt, planum hoc loco facere
                  <expan abbr="cõſtitui">conſtitui</expan>
                : num
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                omnia ſimplicia elementa naturalem, ac proprium motum ha
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                beant: nam ſi eumdem non habent; non est cur quæramus, a
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                quo nam moueantur: ſi verò hæc naturalem motum habere
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                demonſtratum fuerit; hinc nobis quærendi anſam nactis peri
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                culum facere licuerit: an particularem, ac proprium elemen
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                torum motorem inuenire possimus. </s>
                <s id="s.000230">Eadem itaque naturalia
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                corpora, qua naturalia ſunt, propria quadam vi de loco ad lo
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                cum moueri demonstrat Ariſtoteles libro primo de cælo par­
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                ticula quinta: quia natura in eis eſt
                  <expan abbr="principiũ">principium</expan>
                motus; id quod
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                conſtitutum eſt libro ſecundo Phyſicorum.
                  <emph.end type="italics"/>
                </s>
              </p>
            </subchap1>
          </chap>
        </body>
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