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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            <s xml:id="echoid-s15411" xml:space="preserve">
              <pb o="226" file="0246" n="246" rhead="GNOMONICES"/>
              <figure xlink:label="fig-0246-01" xlink:href="fig-0246-01a" number="171">
                <image file="0246-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0246-01"/>
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              <note position="left" xlink:label="note-0246-01" xlink:href="note-0246-01a" xml:space="preserve">10</note>
              <note position="left" xlink:label="note-0246-02" xlink:href="note-0246-02a" xml:space="preserve">20</note>
              <note position="left" xlink:label="note-0246-03" xlink:href="note-0246-03a" xml:space="preserve">30</note>
            huius libri. </s>
            <s xml:id="echoid-s15412" xml:space="preserve">Ita igitur hic fit. </s>
            <s xml:id="echoid-s15413" xml:space="preserve">Nam Meridianus 120. </s>
            <s xml:id="echoid-s15414" xml:space="preserve">in auſtrali horologio productus vltra lineam ho-
              <lb/>
            rizontalem dat in Boreali horologio Meridianum 300. </s>
            <s xml:id="echoid-s15415" xml:space="preserve">ſed vlterius product
              <unsure/>
            us per centrum H, præbet in
              <lb/>
            eodem horologio bor eali Meridianum iterum 120. </s>
            <s xml:id="echoid-s15416" xml:space="preserve">&</s>
            <s xml:id="echoid-s15417" xml:space="preserve">c.</s>
            <s xml:id="echoid-s15418" xml:space="preserve"/>
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        <div xml:id="echoid-div782" type="section" level="1" n="187">
          <head xml:id="echoid-head190" xml:space="preserve">PROBLEMA 19. PROPOSITIO 19.</head>
          <note position="left" xml:space="preserve">40</note>
          <p>
            <s xml:id="echoid-s15419" xml:space="preserve">PARALLELOS ciuitatum, hoc eſt, circulos latitudinum, in eo-
              <lb/>
            dem horologio Verticali deſcribere.</s>
            <s xml:id="echoid-s15420" xml:space="preserve"/>
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          <p>
            <s xml:id="echoid-s15421" xml:space="preserve">HI deſcribuntur, vt paralleli ſignorum Zodiaci, de quibus egimus propoſ. </s>
            <s xml:id="echoid-s15422" xml:space="preserve">14. </s>
            <s xml:id="echoid-s15423" xml:space="preserve">huius libri; </s>
            <s xml:id="echoid-s15424" xml:space="preserve">ſi
              <lb/>
              <note position="left" xlink:label="note-0246-05" xlink:href="note-0246-05a" xml:space="preserve">Deſcriptio pa-
                <lb/>
              rallelorum ciui
                <lb/>
              ratum, latitudi
                <lb/>
              numve in eodẽ
                <lb/>
              horologio Ver-
                <lb/>
              ticali.</note>
            tamen loco parallelorum per ſigna Zodiaci tranſeuntium, accipiantur paralleli per vertices ciui-
              <lb/>
            tatum incedentes, &</s>
            <s xml:id="echoid-s15425" xml:space="preserve">c. </s>
            <s xml:id="echoid-s15426" xml:space="preserve">Parallelos ergo ciuitatum, &</s>
            <s xml:id="echoid-s15427" xml:space="preserve">c. </s>
            <s xml:id="echoid-s15428" xml:space="preserve">Quod erat faciendum.</s>
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        <div xml:id="echoid-div784" type="section" level="1" n="188">
          <head xml:id="echoid-head191" xml:space="preserve">PROBLEMA 20. PROPOSITIO 20.</head>
          <note position="left" xml:space="preserve">50</note>
          <p>
            <s xml:id="echoid-s15430" xml:space="preserve">DOMOS cœleſtes in eodem horologio Verticali deſcribere.</s>
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            <s xml:id="echoid-s15432" xml:space="preserve">IVXTA ſententiam Ioan. </s>
            <s xml:id="echoid-s15433" xml:space="preserve">Regiom .</s>
            <s xml:id="echoid-s15434" xml:space="preserve">qui vult circulos domorum cœleſtium tranſire per com-
              <lb/>
              <note position="left" xlink:label="note-0246-07" xlink:href="note-0246-07a" xml:space="preserve">Deſcriptio do-
                <lb/>
              morum cœle-
                <lb/>
              ſtium ſecundũ
                <lb/>
              Ioan. Regiom.
                <lb/>
              in eodem Vet-
                <lb/>
              tieali horolo-
                <lb/>
              gio.</note>
            munes ſectiones Horizontis, ac Meridiani, partiriq́; </s>
            <s xml:id="echoid-s15435" xml:space="preserve">Æquatorem in 12. </s>
            <s xml:id="echoid-s15436" xml:space="preserve">partes æquales, ita domus
              <lb/>
            cœleſtes deſcribentur. </s>
            <s xml:id="echoid-s15437" xml:space="preserve">Circulus ex E, deſcriptus ſecetur in 12. </s>
            <s xml:id="echoid-s15438" xml:space="preserve">partes æquales, initio facto à linea
              <lb/>
            meridiana; </s>
            <s xml:id="echoid-s15439" xml:space="preserve">& </s>
            <s xml:id="echoid-s15440" xml:space="preserve">per puncta diniſionum, atque centrum E, rectæ occultæ ductæ ſecent lineam æqui-
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            noctialem in punctis, per quæ ex G, vbi linea horizontalis lineam meridianam interſecat, lineæ re-
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            ctæ emiſſæ dabunt circulos domorum cœleſtium ſecundum Ioan. </s>
            <s xml:id="echoid-s15441" xml:space="preserve">Regiom. </s>
            <s xml:id="echoid-s15442" xml:space="preserve">Nam circumducto
              <lb/>
            circulo ex E, deſcripto circa lineam æquinoctialem, donec E, coniungatur cum centro mundi, ip-
              <lb/>
              <note position="left" xlink:label="note-0246-08" xlink:href="note-0246-08a" xml:space="preserve">Demonſtratio
                <lb/>
              deſcriptionis
                <lb/>
              domorum cœle
                <lb/>
              ſtium.</note>
            feq́; </s>
            <s xml:id="echoid-s15443" xml:space="preserve">circulus in plano Æquatoris iaceat, erunt rectæ per centrum ´E, tranſeuntes, communes ſe-
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            ctiones circulorum domorum cœleſtium, (in quorum numero eſt etiam Meridianus) & </s>
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