Alberti, Leone Battista, De re aedificatoria, 1485

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        <body>
          <chap id="N40001A">
            <p id="N409E2D" type="main">
              <s id="N409EFA">
                <pb xlink:href="004/01/214.jpg"/>
              In columna lineas haſce penſitamus longiſſimas axim et fi
                <lb/>
              nitorem. </s>
              <s id="N409F05">Breuiores autem ſunt circulorum diametri: qui
                <lb/>
              uarii uariis locis columnam cingunt. </s>
              <s id="N409F0C">Ex circulis quidem
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              iſtis notiſſimi ſunt plana ſuperficies: quæ in
                <expan abbr="ſũmo">ſummo</expan>
              eſt capi
                <lb/>
              te columnæ: et plana item altera ſuperficies quæ
                <expan abbr="ī">in</expan>
              imo eſt:
                <lb/>
              quam eandem planam appellamus. </s>
              <s id="N409F1D">Axis autem recta eſt li
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              nea per medullam columnæ ducta a centro circuli ſupremi
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              ad centrum infimi: quæ eadem linea medianum dicitur co
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              lumnæ perpendiculum. </s>
              <s id="N409F26">In hac ipſa linea axi centra circulo
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              rum omnium
                <expan abbr="ſiſtũtur">ſiſtuntur</expan>
              . </s>
              <s id="N409F2F">Finitor uero linea eſt ducta a limbo
                <lb/>
              extremo ſupremi circuli ad
                <expan abbr="infimũ">infimum</expan>
              huic regione
                <expan abbr="oppoſitũ">oppoſitum</expan>
                <lb/>
              inſimo in limbo punctum. </s>
              <s id="N409F3E">Diametrorum omnium qui per
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              craſſitudinem columnæ ſunt
                <expan abbr="extẽſionem">extenſionem</expan>
              finiens / eaque ex re
                <lb/>
              non unica et recta eſt uti axis: ſed multis partim rectis par
                <lb/>
              tim flexis lineis compoſita uti mox explicabimus. </s>
              <s id="N409F4B">Circulo
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              rum penſandorum diametri ſunt locis per columnam quinque.
                <lb/>
              </s>
              <s id="N409F51">Locorum hæc ſunt nomina: proiectura / retractio / uenter. </s>
              <s id="N409F54">Pro
                <lb/>
              iectura duplex eſt: in
                <expan abbr="ſũmo">ſummo</expan>
              columnæ una: in imo altera. </s>
              <s id="N409F5D">Di
                <lb/>
              ctæ quod præceteris prodeant atque
                <expan abbr="emineãt">emineant</expan>
              . </s>
              <s id="N409F66">Retractiones
                <expan abbr="etiã">etiam</expan>
                <lb/>
              binæ proiecturis proximæ ſuccedunt tum in imo
                <expan abbr="tũ">tum</expan>
              etiam
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              in
                <expan abbr="ſũmo">ſummo</expan>
              . </s>
              <s id="N409F79">Dictæ quod per eas proiecturæ ad ſcapi ſoliditatem
                <lb/>
              retrahantur. </s>
              <s id="N409F7E">Ventris diameter ſub media columnæ longi
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              tudine annotatur. </s>
              <s id="N409F83">Dictus quod illic columna ſubinturgeſcere
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              uideatur. </s>
              <s id="N409F88">Rurſus proiecturæ differunt inter ſe. </s>
              <s id="N409F8B">Nam quæ
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              in imo eſt ſolo conſtat nextro et flexione qua ab nextro ad
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              columnæ ſolidum retrahatur. </s>
              <s id="N409F92">Proiectura uero quæ in ſum
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              mo ſcapo eſt præter nextrum et inflexam hanc obliquita
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              tem habet etiam torquem. </s>
              <s id="N409F99">Polliciti ſumus uelle me quo
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              ad in me ſit / latine et omnino ita loqui ut intelligar. </s>
              <s id="N409F9E">
                <expan abbr="Fing/gere">Fin
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                gere</expan>
              idcirco oportet uocabula ubi uſitata non ſuppeditant:
                <lb/>
              et ſummere a rebus non diſſimilibus nominum ſimilitudi
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              nes conducit. </s>
              <s id="N409FA7">Nextrum appellant apud nos ætruſcos ui
                <lb/>
              ctam pertenuem qua capillos uirgines uinciant atque inne
                <lb/>
              ctant. </s>
              <s id="N409FAE">Faſciolam idcirco quæ quaſi regula
                <expan abbr="circũflexa">circumflexa</expan>
              pro </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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