Varro, Michael, De motv tractatvs

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="044/01/047.jpg" pagenum="39"/>
              rò mouebuntur, ſi illæ ſuperficies leues fue­
                <lb/>
              rint, vt ſi pinguibus inungantur, vel ex materia
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              leui conſtent. </s>
              <s>Ideò enim reliqua faciliùs mo­
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              uentur, quòd circa puncta veluti quædam mo­
                <lb/>
              ueantur. </s>
            </p>
            <p type="main">
              <s>Simplicis autem trianguli rectilinei aut cu­
                <lb/>
              nei in diuturnis motibus ciendis rarus eſt vſus,
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              tum ob illud quod notauimus incommodum ex
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              vitio materiæ, quo fit vt in eo quaſſatione opus
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              ſit, tum etiam quòd breui eius operatio termine­
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              tur. </s>
              <s>Ideo illo vtimur aut cùm ſolutionem con­
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              tinui molimur, quæ breui tempore fit, vel
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              cùm aliquid diſtendere aut aliquid figere volu­
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              mus. </s>
            </p>
            <p type="main">
              <s>Anguli verò curui linei magnus eſt vſus, præ­
                <lb/>
              ſertim helicis cylindricæ. </s>
              <s>Nihil enim aliud eſt he­
                <lb/>
              lix quàm triangulus curuus: ſi enim alteram ex
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              lineis rectis angulum conſtituentibus, cylindri
                <lb/>
              baſi ipſi lineæ æquali obuolueris, reliquam ve­
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              rò ſeruato eodem quem conſtituunt angulo, ſu­
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              per cylindri ſuperficiem curuaueris, habebis he­
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              licem cylindricam, quam ſi iterum ſeruato eo­
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              dem angulo in rectum extendas, habebis trian­
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              gulum rectilineum. </s>
              <s>Hæc autem helix commo­
                <lb/>
              diſſima eſt, tum quòd in parua mole triangulum </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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