Aristoteles
,
Physicorvm Aristotelis, sev, de natvrali auscultatione, libri octo
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ARIST. DE COELO
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uius eſſe, id uerò quo habet plura grauius eſſe dicãt: </
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<
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autẽ, et ignem, ac aquam ex eiſdem aſſerant triangulis eſſe,
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ſed paucitate, multitudineq́; </
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<
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">differre, quapropter aliud ipſo
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rum leuius, aliud grauius eſſe, aliqua ſanè multitudo aëris
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erit, quæ grauior erit aqua. </
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<
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xml:space
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">At totum contrarium accidit:
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</
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<
s
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xml:space
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">ſemper enim maior aër, magis ſurſum fertur: </
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<
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">& </
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<
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">omnino
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pars quæuis aëris ſurſum ex aqua fertur. </
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<
s
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xml:space
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">Quidã igitur ita
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de graui, leuiq́; </
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<
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">definierunt. </
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<
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xml:space
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">Quibuſdam autem non ſatis ui-
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ſum eſt hoc pacto diuidere, ſed quamuis ætate uetustiores
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eſſent, dehiſce tamẽ quæ nunc ſunt dicta, modo magis nouo
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intellexerunt. </
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<
s
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xml:space
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">Nonnulla nanq; </
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>
<
s
xml:id
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xml:space
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">corpora mole quidem mino-
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ra, ſed grauiora eſſe uidentur. </
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<
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xml:space
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">Patet igitur non ſatis eſſe, ex
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æqualibus ipſis primis ea quæ ſunt ponderis æqualis, dice-
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re cõstare: </
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<
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">eſſent enim æqualia mole. </
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<
s
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xml:space
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">Maius autem ipſorũ,
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grauius eſſe, abſurdũ quidẽ exhiſce dicere, qui prima ipſa,
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ac indiuidua, ex quibus ea corporum constant, quæ pondus
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habent, plana inquiunt eſſe:</
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>
<
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xml:space
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">ij autẽ, qui ſolida eſſe dicũt, ma
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gis dicere poſſunt. </
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<
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xml:space
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">Compoſitorũuerò quoniam ſingula nõ
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hoc modo ſeſe habere uidentur, ſed multa grauiora minora
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mole eſſe uidemus, quemadmodũ æs, lana: </
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<
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">aliam quidã cau-
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ſam & </
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<
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">aiunt. </
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<
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xml:space
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">Vacuum enim comprehenſum
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leuare corpora dicunt, & </
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<
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">interdum maiora facere leuiora,
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cùm plus habeant, ut inquiunt, uacui: </
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">propterea & </
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">molem
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habere maiorem ex æqualibus ſolidis perſæpe, aut exmino-
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ribus cõpoſita, dicunt. </
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<
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xml:space
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">Et omnino, cuilibet leuiori plus in-
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eſſe uacui, cauſam aiunt eſſe. </
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<
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">Dicunt igitur hoc modo de
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ipſis. </
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<
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">Sed addant neceſſe eſt, qui hoc pacto definiunt, ſi ſit
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quippiam leuius, non ſolùm uacui plus, ſed & </
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<
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">ſolidi minus
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habere. </
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<
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xml:space
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">Si enim talem rationẽ excedet, leuius ſanè nõ erit: </
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<
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id enim ipſum & </
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<
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