Guevara, Giovanni di, In Aristotelis mechanicas commentarii, 1627

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      <text>
        <body>
          <chap id="N10019">
            <pb pagenum="39" xlink:href="005/01/047.jpg"/>
            <p id="N1147B" type="main">
              <s id="N1147D">Quæ autem de libra ac vatia punctorum ſemidiametri ve­
                <lb/>
              locitate hìc docet Ariſtoteles, fruſtra interpoſita ſunt ac præ­
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              ter Auctoris intentum, cum ad rem de qua agitur non perti­
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              neant, ac alibi proprijs in locis repetantur. </s>
              <s id="N11486">Quare ex hoc
                <lb/>
              textu reſecanda eſſent, incipiendo à particula (Ea igitur)
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              vſque ad (erit manifeſtum) incluſiue, prout lineis consi­
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              gnauimus. </s>
            </p>
            <p id="N1148F" type="head">
              <s id="N11491">
                <emph type="italics"/>
              De Quarta Circuli Proprietate.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="N11499" type="head">
              <s id="N1149B">Textus Sextus.</s>
            </p>
            <p id="N1149E" type="main">
              <s id="N114A0">I
                <emph type="italics"/>
              n primis igitur quæ accidunt circa libram du­
                <lb/>
              bitare faciunt, quam nam ob cauſam exactio­
                <lb/>
              res minoribus maiores ſunt libræ. </s>
              <s id="N114AA">Huius au­
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              tem rei principium est quamobrem in ipſo cir­
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              culo, quæ plus à centro diſtat linea eadem vi
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              commota, citius fertur, quàm illa quæ minus distat. </s>
              <s id="N114B3">Citius
                <lb/>
              enim bifariam dicitur: ſiue enim in minori tempore æqualem
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              pertranſit locum, citius feciſſe dicimus: ſeu in æquali maio­
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              rem. </s>
              <s id="N114BC">Maior autem in æquali tempore, maiorem deſcribit cir­
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              culum: qui enim extra eſt, maior eo qui intus eſt. </s>
              <s id="N114C1">Horum
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              autem cauſa, quoniam duas fertur lationes ea quæ circulum
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              deſcribit linea. </s>
              <s id="N114C8">Quandoquidem igitur in proportione fertur
                <lb/>
              aliqua id quod fertur, ſuper rectam ferri neceſſe: Et hæc dia­
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              meter efficitur figuræ quam faciunt illæ quæ in huiuſmodi pro­
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              portione coaptantur lineæ. </s>
              <s id="N114D1">Sit enim proportio ſecundum quam
                <lb/>
              latum fertur, quam habet AB ad AC. & A quidem fertur
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              verſus B: A B vero ſubterſeratur verſus MC: latum au­
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              tem ſit A quidem ad D. </s>
              <s id="N114DB">Vbi autem est A B verſus E: quo­
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              niam igitur lationis erat proportio, quam A B habet ad A C,
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              neceſſe eſt & A D ad A E hanc habere proportionem. </s>
              <s id="N114E2">Simile
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              igitur est proportione paruum quadrilaterum maiori: quam­
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              obrem & eadem illorum eſt diameter, & A erit ad F. </s>
              <s id="N114EA">Eodem
                <lb/>
              etiam oſtendetur modo, vbicunque latio deprahendatur; ſem-
                <emph.end type="italics"/>
              </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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