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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        <div xml:id="echoid-div881" type="section" level="1" n="211">
          <pb o="256" file="0272" n="272" rhead="GNOMONICES"/>
        </div>
        <div xml:id="echoid-div882" type="section" level="1" n="212">
          <head xml:id="echoid-head216" xml:space="preserve">PROBLEMA 36. PROPOSITIO 36.</head>
          <head xml:id="echoid-head217" xml:space="preserve">HOROLOGIVM Antiquum Meridianum conſtituere.</head>
          <p>
            <s xml:id="echoid-s17398" xml:space="preserve">ARCVS diurnus tam tropici ♋, B G C, quàm tropici ♑, D G E, in circulo F G H I, diuida
              <lb/>
              <note position="left" xlink:label="note-0272-01" xlink:href="note-0272-01a" xml:space="preserve">Deſcriptio ho-
                <lb/>
              rologii Antiqui
                <lb/>
              Meridiani.</note>
            tur in 12. </s>
            <s xml:id="echoid-s17399" xml:space="preserve">partes æquales. </s>
            <s xml:id="echoid-s17400" xml:space="preserve">Harum enim beneficio inueniemus in vtroque tropico puncta, per quę
              <lb/>
              <figure xlink:label="fig-0272-01" xlink:href="fig-0272-01a" number="189">
                <image file="0272-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0272-01"/>
              </figure>
              <note position="left" xlink:label="note-0272-02" xlink:href="note-0272-02a" xml:space="preserve">10</note>
              <note position="left" xlink:label="note-0272-03" xlink:href="note-0272-03a" xml:space="preserve">20</note>
              <note position="left" xlink:label="note-0272-04" xlink:href="note-0272-04a" xml:space="preserve">30</note>
            ducendæ erunt horæ inæquales, eodem modo, quo in duabus præcedentibus propoſitionibus pun
              <lb/>
            cta horarum ab ortu, & </s>
            <s xml:id="echoid-s17401" xml:space="preserve">occaſu in eiſdem tropicis inueſtigauimus. </s>
            <s xml:id="echoid-s17402" xml:space="preserve">Tranſibunt autẽ horę inæqua-
              <lb/>
            les per horas à meridie, vel media nocte in æquinoctiali linea, vt in horizontali horologio, & </s>
            <s xml:id="echoid-s17403" xml:space="preserve">Ver-
              <lb/>
            ticali docuimus, & </s>
            <s xml:id="echoid-s17404" xml:space="preserve">perſpicuum eſt ex tabulis propoſ. </s>
            <s xml:id="echoid-s17405" xml:space="preserve">33. </s>
            <s xml:id="echoid-s17406" xml:space="preserve">ſuperioris lib.</s>
            <s xml:id="echoid-s17407" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s17408" xml:space="preserve">SI rurſus duo arcus diurni delineentur, quorum vnus horas 18. </s>
            <s xml:id="echoid-s17409" xml:space="preserve">alter 6. </s>
            <s xml:id="echoid-s17410" xml:space="preserve">comprehendat, de-
              <lb/>
              <note position="left" xlink:label="note-0272-05" xlink:href="note-0272-05a" xml:space="preserve">Alia deſcriptio
                <lb/>
              horologii Anti
                <lb/>
              qui Meridiani
                <lb/>
              per arcus diur
                <lb/>
              nos horarum 6.
                <lb/>
              & 18.</note>
              <note position="left" xlink:label="note-0272-06" xlink:href="note-0272-06a" xml:space="preserve">40</note>
            ſcribemus idem horologium, quemadmodum & </s>
            <s xml:id="echoid-s17411" xml:space="preserve">in horizontali, & </s>
            <s xml:id="echoid-s17412" xml:space="preserve">Verticali factum eſt, ex tabulis
              <lb/>
            ſcholii propoſ. </s>
            <s xml:id="echoid-s17413" xml:space="preserve">33. </s>
            <s xml:id="echoid-s17414" xml:space="preserve">ſuperioris lib. </s>
            <s xml:id="echoid-s17415" xml:space="preserve">quæ horis inęqualibus dicatæ ſunt. </s>
            <s xml:id="echoid-s17416" xml:space="preserve">Vtriuſque deſcriptionis
              <lb/>
            exemplum in propoſita figura apparet. </s>
            <s xml:id="echoid-s17417" xml:space="preserve">Horologium ergo Antiquum Meridianum conſtruxi-
              <lb/>
            mus. </s>
            <s xml:id="echoid-s17418" xml:space="preserve">Quod faciendum erat.</s>
            <s xml:id="echoid-s17419" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div885" type="section" level="1" n="213">
          <head xml:id="echoid-head218" style="it" xml:space="preserve">SCHOLIVM.</head>
          <p style="it">
            <s xml:id="echoid-s17420" xml:space="preserve">EX figura, & </s>
            <s xml:id="echoid-s17421" xml:space="preserve">deſcriptione vtriuſque horologij apparet, lineas horarum inæqualium eandem poſi-
              <lb/>
              <note position="left" xlink:label="note-0272-07" xlink:href="note-0272-07a" xml:space="preserve">Horologium
                <lb/>
              Antiquum ori ẽ
                <lb/>
              tale in facie pla
                <lb/>
              ni oppoſita de-
                <lb/>
              pictum dat An
                <lb/>
              tiquum occidẽ-
                <lb/>
              tale, & e contra
                <lb/>
              @io.</note>
            tionem habere, & </s>
            <s xml:id="echoid-s17422" xml:space="preserve">ſitum in vtroque horologio. </s>
            <s xml:id="echoid-s17423" xml:space="preserve">Quocirca vno deſcripto, ſi in oppoſita facie eædem lineæ
              <lb/>
            depingantur lineis prioribus omnino reſpondentes, habebitur etiam alterum horologium. </s>
            <s xml:id="echoid-s17424" xml:space="preserve">Numeri tamen
              <lb/>
              <note position="left" xlink:label="note-0272-08" xlink:href="note-0272-08a" xml:space="preserve">50</note>
            horarum commutandi ſunt in earum complementa vſque ad 12. </s>
            <s xml:id="echoid-s17425" xml:space="preserve">Vt 1. </s>
            <s xml:id="echoid-s17426" xml:space="preserve">in 11. </s>
            <s xml:id="echoid-s17427" xml:space="preserve">& </s>
            <s xml:id="echoid-s17428" xml:space="preserve">2. </s>
            <s xml:id="echoid-s17429" xml:space="preserve">in 10. </s>
            <s xml:id="echoid-s17430" xml:space="preserve">&</s>
            <s xml:id="echoid-s17431" xml:space="preserve">c.</s>
            <s xml:id="echoid-s17432" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div887" type="section" level="1" n="214">
          <head xml:id="echoid-head219" xml:space="preserve">DE HOROLOGIIS POLARIBVS.</head>
          <head xml:id="echoid-head220" xml:space="preserve">PROBLEMA 37. PROPOSITIO 37.</head>
          <p>
            <s xml:id="echoid-s17433" xml:space="preserve">HOROLOGIVM Aſtronomicum polare delineare. </s>
            <s xml:id="echoid-s17434" xml:space="preserve">Id eſt,
              <lb/>
            Lineas horarum à meridie, vel media nocte in plano, quod </s>
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