Guevara, Giovanni di, In Aristotelis mechanicas commentarii, 1627

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    <archimedes>
      <text>
        <body>
          <chap id="N10019">
            <p id="N11265" type="main">
              <s id="N11272">
                <pb pagenum="35" xlink:href="005/01/043.jpg"/>
              relinquitur (concludit Ariſtoteles) ſi ex ipſo circulo conſti­
                <lb/>
              tuto, aliæ poſtea oriantur contrarietates, vel alia contraria in
                <lb/>
              ipſo conſiderentur, vt mox ex dicendis patebit. </s>
            </p>
            <p id="N11282" type="head">
              <s id="N11284">
                <emph type="italics"/>
              De ſecunda circuli proprietate.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="N1128B" type="head">
              <s id="N1128D">Textus Quartus.</s>
            </p>
            <p id="N11290" type="main">
              <s id="N11292">I
                <emph type="italics"/>
              n primis enim lineæ illi, quæ circuli orbem am­
                <lb/>
              plectitur, nullam habenti latitudinem contraria
                <lb/>
              quodammodo ineſſe apparans, concauum ſcilicet,
                <lb/>
              & curuum. </s>
              <s id="N1129E">Hæc autem eo à ſe inuicem diſtant
                <lb/>
              modo, quo magnum, & paricum, illorum etenim
                <lb/>
              medium eſt æquale: horum verò rectum; quapropter cum ad
                <lb/>
              ſe inuicem commutantur, illa
                <expan abbr="quidẽ">quidem</expan>
              prius æqualia fieri neceſſe
                <lb/>
              est, quam extremorum vtrumlibet: lineam vero rectam,
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              quando eſt curua, concaua, aut ex huiuſmodi rurſum curua ſit,
                <lb/>
              & circularis. </s>
              <s id="N112B1">Vnum quidem igitur iſtuc abſurdum ineſt circulo.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="N112B6" type="head">
              <s id="N112B8">COMMENTARIVS.</s>
            </p>
            <p id="N112BC" type="main">
              <s id="N112BE">Secundò admirabilem ſe natura circuli oſtendit, ſi ſu­
                <lb/>
              matur infacto eſſe, quod cum in primis (inquit Ariſto­
                <lb/>
              teles) linea, quæ ipſius circuli orbem complectitur, ac
                <lb/>
              peripheria, ſeu
                <expan abbr="circunferẽtia">circunferentia</expan>
              nuncupatur, ſit per ſe quoad la­
                <lb/>
              titudinem, & profunditatem indiuiſibilis, ſimul tamen tan­
                <lb/>
              quam ex duobus contrarijs inter ſe coniunctis conſtituatur
                <lb/>
              concaua, & curua, ſiuè conuexa. </s>
              <s id="N112D1">Etenim eſt verè terminus
                <lb/>
              extimus, & conuexum ipſius circuli, ac ſimul ambiens, &
                <lb/>
              complectens in ſua concauitate ipſam ſuperficilem circuli:
                <lb/>
              Concauum autem, & conuexum ſe habent ſicut magnum,
                <lb/>
              & paruum. </s>
              <s id="N112DC">Horum enim medium eſt æquale, illorum verò
                <lb/>
              rectum. </s>
              <s id="N112E1">Quarè ſicut cum magnum, & paruum inuicem,
                <lb/>
              commutantur, prius perueniunt ad æquale, quàm ad hoc vt
                <lb/>
              magnum conſtituatur paruum, & paruum conſtituatur ma­</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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