Archimedes, Archimedis De iis qvae vehvntvr in aqva libri dvo

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            cum adhuc Cardinalis eſſet, mihi, quæ ſua erat hu-
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            manitas, libros eiuſdem Archimedis de ijs, quæ ve-
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            huntur in aqua, latine redditos dono dedit. </s>
            <s xml:id="echoid-s2740" xml:space="preserve">hos cum
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            ego, ut aliorum ſtudia incitarem, emendãdos, & </s>
            <s xml:id="echoid-s2741" xml:space="preserve">cõ-
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            mentariis illuſtrandos ſuſcepiſſem, animaduerti dubi
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            tari non poſſe, quin Archimedes vel de hac materia
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            ſcripſiſſet, vel aliorum mathematicorum ſcripta per-
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            legiſſet. </s>
            <s xml:id="echoid-s2742" xml:space="preserve">nam in iis tum alia nonnulla, tum maxime
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            illam propoſitionem, ut euidentem, & </s>
            <s xml:id="echoid-s2743" xml:space="preserve">aliàs proba-
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            tam aſſumit, Centrũ grauitatis in portionibus conoi
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            dis rectan guli axem ita diuidere, vt pars, quæ ad verti
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            cem terminatur, alterius partis, quæ ad baſim dupla
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            ſit. </s>
            <s xml:id="echoid-s2744" xml:space="preserve">Verum hæc ad eam partem mathematicarum
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            diſciplinarum præcipue refertur, in qua de centro
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            grauitatis corporum ſolidorum tractatur. </s>
            <s xml:id="echoid-s2745" xml:space="preserve">non eſt au
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            tem conſentaneum Archimedem illum admirabilem
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            virum hanc propoſitionem ſibi argumentis con-
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            firmandam exiſtimaturum non fuiſſe, niſi eam vel
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            aliis in locis probauiſſet, vel ab aliis probatam eſſe
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            comperiſſet. </s>
            <s xml:id="echoid-s2746" xml:space="preserve">quamobrem nequid in iis libris intel-
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            ligendis deſiderari poſſet, ſtatui hanc etiam partem
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            vel à veteribus prætermiſſam, vel tractatam quidem,
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            ſed in tenebris iacentem, non intactam relinquere;
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            </s>
            <s xml:id="echoid-s2747" xml:space="preserve">atque ex aſsidua mathematicorum, præſertim Archi-
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            medis lectione, quæ mihi in mentem venerunt, ea in
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            medium afferre; </s>
            <s xml:id="echoid-s2748" xml:space="preserve">ut centri grauitatis corporum ſoli-
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            dorum, ſi non perfectam, at certe aliquam </s>
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