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-s26049" xml:space="preserve">
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            repreſentat Meridianũ Horizontis, & </s>
            <s xml:id="echoid-s26050" xml:space="preserve">recta OR, cõmunem ſectionẽ plani horologij horizontalis,
              <lb/>
            & </s>
            <s xml:id="echoid-s26051" xml:space="preserve">Meridiani, hoc eſt, lineam meridianam; </s>
            <s xml:id="echoid-s26052" xml:space="preserve">ita in horologio declinante ſimul & </s>
            <s xml:id="echoid-s26053" xml:space="preserve">inclinato idẽ cir-
              <lb/>
            culus refert Meridianum proprium plani inclinati, id eſt, circulum maximum per polos mundi
              <lb/>
            & </s>
            <s xml:id="echoid-s26054" xml:space="preserve">per polos plani declinantis ductum; </s>
            <s xml:id="echoid-s26055" xml:space="preserve">recta autem OR, communem ſectionem exprimit dicti
              <lb/>
            Meridiani, & </s>
            <s xml:id="echoid-s26056" xml:space="preserve">plani horologij declinantis, ac inclinati, hoc eſt, lineam ſtyli.</s>
            <s xml:id="echoid-s26057" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s26058" xml:space="preserve">ALITER. </s>
            <s xml:id="echoid-s26059" xml:space="preserve">Ducta recta ρ I, pro axe mundi, erigatur ad eam in I, perpendicularis IG, pro ra-
              <lb/>
              <note position="left" xlink:label="note-0412-01" xlink:href="note-0412-01a" xml:space="preserve">Alia deſcriptio
                <lb/>
              arcuum ſigno-
                <lb/>
              @@m.</note>
            dio Æquatoris, ad cuius utramque partem radij aliorũ ſignorũ educãtur, ut in ſuperioribus factũ
              <lb/>
            eſt, ſitq́ue I ρ, æqualis portioni axis ρ I, in horologio, & </s>
            <s xml:id="echoid-s26060" xml:space="preserve">recta IG, æqualis rectæ IG, uel LG, in
              <lb/>
              <figure xlink:label="fig-0412-01" xlink:href="fig-0412-01a" number="272">
                <image file="0412-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0412-01"/>
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              <note position="left" xlink:label="note-0412-02" xlink:href="note-0412-02a" xml:space="preserve">10</note>
              <note position="left" xlink:label="note-0412-03" xlink:href="note-0412-03a" xml:space="preserve">20</note>
              <note position="left" xlink:label="note-0412-04" xlink:href="note-0412-04a" xml:space="preserve">30</note>
              <note position="left" xlink:label="note-0412-05" xlink:href="note-0412-05a" xml:space="preserve">40</note>
            eodem horologio; </s>
            <s xml:id="echoid-s26061" xml:space="preserve">& </s>
            <s xml:id="echoid-s26062" xml:space="preserve">ex ρ, per G, recta emittatur ρ G: </s>
            <s xml:id="echoid-s26063" xml:space="preserve">quam fortaſſis commodius ducemus, fi
              <lb/>
            ex ρ, educamus rectam ρ G, quæ cum ρ I, conſtituat angulum G ρ I, æqualem angulo G ρ I, quẽ
              <lb/>
            in horologio conſtituunt axis ρ I, & </s>
            <s xml:id="echoid-s26064" xml:space="preserve">linea ſtyli ρ G, nempe angulo altitudinis poli ſupra planum
              <lb/>
            horologij. </s>
            <s xml:id="echoid-s26065" xml:space="preserve">Erit hac ratione triangulum hoc G ρ I, æquale omnino triangulo G ρ I, in horologio
              <lb/>
              <note position="left" xlink:label="note-0412-06" xlink:href="note-0412-06a" xml:space="preserve">4. vel 26.
                <lb/>
              primi.</note>
            inclinato, atque adeo exiſtente ρ I, in hac figura axe mundi, recta ρ G, linea ſtyli erit. </s>
            <s xml:id="echoid-s26066" xml:space="preserve">Quod ſi re-
              <lb/>
            liqua fiant, ut in propoſ. </s>
            <s xml:id="echoid-s26067" xml:space="preserve">2. </s>
            <s xml:id="echoid-s26068" xml:space="preserve">huius libri, & </s>
            <s xml:id="echoid-s26069" xml:space="preserve">in eius ſcholio tradidimus, accipiendo ſemper hic li-
              <lb/>
            teram ρ, pro litera C, cuius ibi mentio fit, deſcripti erunt paralleli, ſiue arcus ſignorum Zodiaci.</s>
            <s xml:id="echoid-s26070" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s26071" xml:space="preserve">EXEMPLVM ſubiecimus reſpondens ultimo horologio Superiori ex illis ſex præcedentis
              <lb/>
              <note position="left" xlink:label="note-0412-07" xlink:href="note-0412-07a" xml:space="preserve">50</note>
            propoſ. </s>
            <s xml:id="echoid-s26072" xml:space="preserve">Vbi quoniam linea ſtyli eadem eſt, quæ linea horæ 6. </s>
            <s xml:id="echoid-s26073" xml:space="preserve">ſingulis lineis horarijs ex puncto ρ,
              <lb/>
            figurę radiorum ſignorum Zodiaci, ex qua arcus ſignorum deſcribuntur, egredientibus appoſi-
              <lb/>
            ti ſunt bini numeri horarum æqualiter hinc inde à linea horæ 6. </s>
            <s xml:id="echoid-s26074" xml:space="preserve">hoc eſt, à linea ſtyli diſtantiũ, ut
              <lb/>
            in propoſ. </s>
            <s xml:id="echoid-s26075" xml:space="preserve">2. </s>
            <s xml:id="echoid-s26076" xml:space="preserve">huius libri monimus. </s>
            <s xml:id="echoid-s26077" xml:space="preserve">Rurſus hic recta ρ V, radio Æquatoris æquidiſtans exhibet ho
              <lb/>
            ram 12. </s>
            <s xml:id="echoid-s26078" xml:space="preserve">quoniam huius horæ linea in horologio equidiſtat ęquinoctiali lineæ: </s>
            <s xml:id="echoid-s26079" xml:space="preserve">quemadmodum in
              <lb/>
            horizontali horologio recta HV, radio Æquatoris æquidiſtans in figura radiorum propoſ. </s>
            <s xml:id="echoid-s26080" xml:space="preserve">2. </s>
            <s xml:id="echoid-s26081" xml:space="preserve">ſupe
              <lb/>
            rioris lib. </s>
            <s xml:id="echoid-s26082" xml:space="preserve">refert horã 6. </s>
            <s xml:id="echoid-s26083" xml:space="preserve">quia huiuſce horę linea etiã æquinoctiali lineæ æquidiſtat in horologio.</s>
            <s xml:id="echoid-s26084" xml:space="preserve"/>
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            <s xml:id="echoid-s26085" xml:space="preserve">ADDIDIMVS quoque aliã figurã radiorũ Zodiaci, cũ lineis horarijs ex ρ, egredientibus
              <lb/>
            reſpondenté primo horologio antecedẽtis propoſ in quo linea ſtvli, neq; </s>
            <s xml:id="echoid-s26086" xml:space="preserve">vna eſt ex lineis horariis,
              <lb/>
            aeque æqualiter à duabus hinc inde poſitis diſtat. </s>
            <s xml:id="echoid-s26087" xml:space="preserve">Vnde fit ut ſingulę lineæ ex ρ, emiſſę </s>
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