Archimedes, Archimedis De iis qvae vehvntvr in aqva libri dvo

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DE CENTRO GRAVIT. SOLID.
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        <div type="section" level="1" n="67">
          <p>
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              <pb o="6" file="0123" n="123" rhead="DE CENTRO GRAVIT. SOLID."/>
            habebit maiorem proportionẽ,
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              <anchor type="figure" xlink:label="fig-0123-01a" xlink:href="fig-0123-01"/>
            quam c b ad b a. </s>
            <s xml:space="preserve">fiat o b ad b a,
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            ut figura rectilinea ad portio-
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            nes. </s>
            <s xml:space="preserve">cum igitur à circulo, uel el-
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            lipſi, cuius grauitatis centrum
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            eſt b, auferatur figura rectilinea
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            e f g h k l m n, cuius centrum a;
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            </s>
            <s xml:space="preserve">reliquæ magnitudinis ex portio
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              <anchor type="note" xlink:label="note-0123-01a" xlink:href="note-0123-01"/>
            nibus compoſitæ centrum graui
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            tatis erit in linea a b producta,
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            & </s>
            <s xml:space="preserve">in puncto o, extra figuram po
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            ſito. </s>
            <s xml:space="preserve">quod quidem fieri nullo mo
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            do poſſe perſpicuum eſt. </s>
            <s xml:space="preserve">ſequi-
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            tur ergo, ut circuli & </s>
            <s xml:space="preserve">ellipſis cen
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            trum grauitatis ſit punctum a,
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            idem quod figuræ centrum.</s>
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          </p>
          <div type="float" level="2" n="1">
            <figure xlink:label="fig-0122-01" xlink:href="fig-0122-01a">
              <image file="0122-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/4E7V2WGH/figures/0122-01"/>
            </figure>
            <note position="left" xlink:label="note-0122-01" xlink:href="note-0122-01a" xml:space="preserve">8. quinti.</note>
            <note position="left" xlink:label="note-0122-02" xlink:href="note-0122-02a" xml:space="preserve">19. quinti
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            apud Cã
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            panum.</note>
            <figure xlink:label="fig-0123-01" xlink:href="fig-0123-01a">
              <image file="0123-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/4E7V2WGH/figures/0123-01"/>
            </figure>
            <note position="right" xlink:label="note-0123-01" xlink:href="note-0123-01a" xml:space="preserve">8. Archi-
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            medis.</note>
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        </div>
        <div type="section" level="1" n="68">
          <head xml:space="preserve">ALITER.</head>
          <p>
            <s xml:space="preserve">Sit circulus, uel ellipſis a b c d,
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            cuius diameter d b, & </s>
            <s xml:space="preserve">centrum e: </s>
            <s xml:space="preserve">ducaturq; </s>
            <s xml:space="preserve">per e recta li
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            nea a c, ſecans ipſam d b adrectos angulos. </s>
            <s xml:space="preserve">erunt a d c,
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            a b c circuli, uel ellipſis dimidiæ portiones. </s>
            <s xml:space="preserve">Itaque quo-
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            niam por
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              <anchor type="figure" xlink:label="fig-0123-02a" xlink:href="fig-0123-02"/>
            tiõis a d c
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            cétrū gra-
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            uitatis eſt
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            in diame-
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            tro d e: </s>
            <s xml:space="preserve">& </s>
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            portionis
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            a b c cen-
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            trum eſt ĩ
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            ipſa e b: </s>
            <s xml:space="preserve">to
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            tius circu
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            li, uel ellipſis grauitatis centrum eritin diametro d b.
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            </s>
            <s xml:space="preserve">Sit autem portionis a d c cẽtrum grauitatis f: </s>
            <s xml:space="preserve">& </s>
            <s xml:space="preserve">ſumatur</s>
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