Clavius, Christoph, Gnomonices libri octo, in quibus non solum horologiorum solariu[m], sed aliarum quo[quam] rerum, quae ex gnomonis umbra cognosci possunt, descriptiones geometricè demonstrantur
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          <p>
            <s xml:id="echoid-s23859" xml:space="preserve">HAEC autem horizontalis linea totum horologium dirimit in duo, ſuperius, & </s>
            <s xml:id="echoid-s23860" xml:space="preserve">inferius, nec
              <lb/>
            non in diurnum, & </s>
            <s xml:id="echoid-s23861" xml:space="preserve">nocturnum, vt de Verticali horologio, & </s>
            <s xml:id="echoid-s23862" xml:space="preserve">alijs diximus. </s>
            <s xml:id="echoid-s23863" xml:space="preserve">Parallelos ergo, ſeu
              <lb/>
            arcus ſignorum Zodiaci in eodem horologio ad Horizontem inclinato poſuimus. </s>
            <s xml:id="echoid-s23864" xml:space="preserve">Quod fa-
              <lb/>
            ciendum erat.</s>
            <s xml:id="echoid-s23865" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div1229" type="section" level="1" n="302">
          <head xml:id="echoid-head312" xml:space="preserve">PROBLEMA 27. PROPOSITIO 27.</head>
          <p>
            <s xml:id="echoid-s23866" xml:space="preserve">PARALLELOS arcuum diurnorum in eodem horologio ad
              <lb/>
            Horizontem inclinato locare.</s>
            <s xml:id="echoid-s23867" xml:space="preserve"/>
          </p>
          <note position="left" xml:space="preserve">10</note>
          <note position="left" xml:space="preserve">Deſcriptio ar-
            <lb/>
          cuum ſignorũ
            <lb/>
          in horologio
            <lb/>
          ad Horizõtem
            <lb/>
          inclinato.</note>
          <p>
            <s xml:id="echoid-s23868" xml:space="preserve">SI loco parallelorum, qui per ſigna Zodiaci deſcribuntur, ſumantur paralleli arcuum diur-
              <lb/>
            norum, delineabuntur arcus diurni, vt arcus ſignorum, veluti in præcedentibus factum eſt. </s>
            <s xml:id="echoid-s23869" xml:space="preserve">Itaque
              <lb/>
            parallelos arcuum diurnorum in eodem horologio ad Horizontem inclinato locauimus. </s>
            <s xml:id="echoid-s23870" xml:space="preserve">Quod
              <lb/>
            erat faciendum.</s>
            <s xml:id="echoid-s23871" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div1230" type="section" level="1" n="303">
          <head xml:id="echoid-head313" xml:space="preserve">PROBLEMA 28. PROPOSITIO 28.</head>
          <p>
            <s xml:id="echoid-s23872" xml:space="preserve">CIRCVLOS Verticales in eodem horologio inclinato ad Ho-
              <lb/>
            rizontem delineare.</s>
            <s xml:id="echoid-s23873" xml:space="preserve"/>
          </p>
          <note position="left" xml:space="preserve">20</note>
          <p>
            <s xml:id="echoid-s23874" xml:space="preserve">DVCATVR ex G, loco ſtyli ad meridianam lineam perpendicularis G A, ſtylo æqua
              <unsure/>
            lis, & </s>
            <s xml:id="echoid-s23875" xml:space="preserve">
              <lb/>
              <note position="left" xlink:label="note-0376-04" xlink:href="note-0376-04a" xml:space="preserve">Deſcriptio cir-
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              culorum Verti
                <lb/>
              calium in eodẽ
                <lb/>
              horologio ad
                <lb/>
              Horizõtem in-
                <lb/>
              slinato.</note>
            in A, ad G A, conſtituatur angulus G A C, inclinationi plani æqualis, deorſum quidem in horo-
              <lb/>
            logio ſuperiori, ſurſum verò in inferiori, nempe in contrariam partem ei, in quam in propoſ. </s>
            <s xml:id="echoid-s23876" xml:space="preserve">26.
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            </s>
            <s xml:id="echoid-s23877" xml:space="preserve">
              <figure xlink:label="fig-0376-01" xlink:href="fig-0376-01a" number="251">
                <image file="0376-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0376-01"/>
              </figure>
              <note position="left" xlink:label="note-0376-05" xlink:href="note-0376-05a" xml:space="preserve">30</note>
              <note position="left" xlink:label="note-0376-06" xlink:href="note-0376-06a" xml:space="preserve">40</note>
              <note position="left" xlink:label="note-0376-07" xlink:href="note-0376-07a" xml:space="preserve">50</note>
            huius libri recta A B, ducta eſt ad inueniendum punctum B, pro linea horizontali ducenda: </s>
            <s xml:id="echoid-s23878" xml:space="preserve">ſecet
              <lb/>
            autem recta A C, meridianam lineam in C. </s>
            <s xml:id="echoid-s23879" xml:space="preserve">Poſtea ductæ rectæ A B, abſcindatur æqualis B D, in
              <lb/>
            linea meridiana ſurſum, vel deorſum verſus: </s>
            <s xml:id="echoid-s23880" xml:space="preserve">Centro autem D, circulus deſcriptus in partes 360.
              <lb/>
            </s>
            <s xml:id="echoid-s23881" xml:space="preserve">vel pauciores diuidatur, & </s>
            <s xml:id="echoid-s23882" xml:space="preserve">per centrum D, & </s>
            <s xml:id="echoid-s23883" xml:space="preserve">diuiſionum puncta rectæ emittantur ſecantes hori-
              <lb/>
            zontalem lineam in punctis, per quæ ſi ex C, rectæ emittantur, deſcripti erunt circuli Verticales,
              <lb/>
            nempe communes eorum, & </s>
            <s xml:id="echoid-s23884" xml:space="preserve">plani horologij ſectiones, quarum principium ſtatuitur in Vertica-
              <lb/>
            li linea, quæ per punctum C, inuentum parallela ducitur lineæ æquinoctiali. </s>
            <s xml:id="echoid-s23885" xml:space="preserve">Quæ omnia ita
              <lb/>
            oſtendemus.</s>
            <s xml:id="echoid-s23886" xml:space="preserve"/>
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