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-s40543" xml:space="preserve">
              <pb o="612" file="0628" n="628" rhead="GNOMONICES"/>
            præcedentes verò eam verſus A, monſtrant horas antemeridianas, ſeu poſt mediam noctem, ſe-
              <lb/>
            quentes autem eandem verſus B, ſignificant horas pomeridianas.
              <lb/>
            </s>
            <s xml:id="echoid-s40544" xml:space="preserve">
              <note position="left" xlink:label="note-0628-01" xlink:href="note-0628-01a" xml:space="preserve">Deſcriptio eiuſ-
                <lb/>
              dem horologii
                <lb/>
              ab Hotizonte
                <lb/>
              declinantis ex
                <lb/>
              horologio Ver-
                <lb/>
              ticali.</note>
            </s>
          </p>
          <p>
            <s xml:id="echoid-s40545" xml:space="preserve">QVOD verò attinet ad poſteriorem rationem ducendarum linearum horariarum, qua vide-
              <lb/>
            licet cap. </s>
            <s xml:id="echoid-s40546" xml:space="preserve">24. </s>
            <s xml:id="echoid-s40547" xml:space="preserve">inuenimus puncta in recta A B, per quæ tranſeunt horæ ex centro C, emiſſæ, obſer-
              <lb/>
            uandum eſt, lineas horarias ex F, egredientes, rectamq́ue A B ſecantes non eſſe ſumendas ex horo-
              <lb/>
            logio horizontali, ſed ex Verticali, vt lib. </s>
            <s xml:id="echoid-s40548" xml:space="preserve">2. </s>
            <s xml:id="echoid-s40549" xml:space="preserve">propoſ. </s>
            <s xml:id="echoid-s40550" xml:space="preserve">13. </s>
            <s xml:id="echoid-s40551" xml:space="preserve">oſtendimus.</s>
            <s xml:id="echoid-s40552" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s40553" xml:space="preserve">ANGVLVS autem G C I, eſt hic quoque quantitas altitudinis poli ſupra planum horolo-
              <lb/>
              <note position="left" xlink:label="note-0628-02" xlink:href="note-0628-02a" xml:space="preserve">Altitudo poli ſu
                <lb/>
              pra planum ab
                <lb/>
              Horizonte de
                <lb/>
              clinans.</note>
            gii, ſicut in horologiis declinantibus à Verticali, vt cap. </s>
            <s xml:id="echoid-s40554" xml:space="preserve">24. </s>
            <s xml:id="echoid-s40555" xml:space="preserve">diximus.</s>
            <s xml:id="echoid-s40556" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s40557" xml:space="preserve">ARCVS ſignorum, & </s>
            <s xml:id="echoid-s40558" xml:space="preserve">longitudinum dietum deſcribentur hic, vt in horologio declinante à
              <lb/>
            Verticali. </s>
            <s xml:id="echoid-s40559" xml:space="preserve">Id quod ex ſequentibus duabus figuris perſpicuum eſt.
              <lb/>
            </s>
            <s xml:id="echoid-s40560" xml:space="preserve">
              <note position="left" xlink:label="note-0628-03" xlink:href="note-0628-03a" xml:space="preserve">Deſcriptio ar-
                <lb/>
              cuum ſig norũ,
                <lb/>
              & longitudinu
                <lb/>
              d@e@um in horo
                <lb/>
              logio declinan-
                <lb/>
              te ab Horizon-
                <lb/>
              te.</note>
              <note position="left" xlink:label="note-0628-04" xlink:href="note-0628-04a" xml:space="preserve">10</note>
              <figure xlink:label="fig-0628-01" xlink:href="fig-0628-01a" number="396">
                <image file="0628-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0628-01"/>
              </figure>
              <note position="left" xlink:label="note-0628-05" xlink:href="note-0628-05a" xml:space="preserve">20</note>
              <note position="left" xlink:label="note-0628-06" xlink:href="note-0628-06a" xml:space="preserve">30</note>
            </s>
          </p>
          <p>
            <s xml:id="echoid-s40561" xml:space="preserve">LINEA horizontalis ducitur hic parallela rectæ C E, per punctum, vbi linea hòræ 6. </s>
            <s xml:id="echoid-s40562" xml:space="preserve">& </s>
            <s xml:id="echoid-s40563" xml:space="preserve">ęqui
              <lb/>
              <note position="left" xlink:label="note-0628-08" xlink:href="note-0628-08a" xml:space="preserve">Horizontalis li
                <lb/>
              neæ deſcriptio.</note>
            noctialis ſe mutuo interſecant, vt in figura cernitur. </s>
            <s xml:id="echoid-s40564" xml:space="preserve">Hæc autem horizontalis linea diſpertit to-
              <lb/>
            tum horologium in duo, quorum maius, in quo nimirum includitur linea horæ 12. </s>
            <s xml:id="echoid-s40565" xml:space="preserve">ad Zenith
              <lb/>
              <note position="left" xlink:label="note-0628-09" xlink:href="note-0628-09a" xml:space="preserve">Horologium ſu
                <lb/>
              perius. & Infe-
                <lb/>
              rius.</note>
            ſpectat, eſtq́ue ſuperius, aliud verò inferius eſt, dum modo, conuerſis nobis ad horologium verſus
              <lb/>
            ortum, occaſumve, prout horologium ad occaſum, aut ortum ſpectat, ſuperiora omnia fiant in-
              <lb/>
            feriora, & </s>
            <s xml:id="echoid-s40566" xml:space="preserve">quæ tunc nobis dextra ſunt, fiant ſiniſtra, & </s>
            <s xml:id="echoid-s40567" xml:space="preserve">contra: </s>
            <s xml:id="echoid-s40568" xml:space="preserve">cuiuſmodi eſſent lineamenta, quæ
              <lb/>
            in parte oppoſita ſuperioris horologii (poſtquam pars ſuperior facta eſt inferior) deſcriberentur
              <lb/>
              <note position="left" xlink:label="note-0628-10" xlink:href="note-0628-10a" xml:space="preserve">Quomodo ho-
                <lb/>
              rologium collo
                <lb/>
              eandum ſit, vt
                <lb/>
              horas indicet.</note>
            reſpondentia ad vnguem lineamentis vltra lineam horizontalem. </s>
            <s xml:id="echoid-s40569" xml:space="preserve">Vtrumque portò horologium
              <lb/>
            tam ſupertius, quàm inferius ita collo candum eſt, vt linea horizontalis & </s>
            <s xml:id="echoid-s40570" xml:space="preserve">Horizonti, & </s>
            <s xml:id="echoid-s40571" xml:space="preserve">lineæ me-
              <lb/>
            ridianę in plano Horizonti parallelo inuentæ æquidiſtet, atque recta A B, in plano circuli Vertica-
              <lb/>
              <note position="left" xlink:label="note-0628-11" xlink:href="note-0628-11a" xml:space="preserve">50</note>
            lis propriè dicti ſita ſit, hac tamen lege, vt linea horizontalis in ſuperiori quocunque horologio
              <lb/>
            ſit ſupra lineam meridianam, in inferiori autem infra. </s>
            <s xml:id="echoid-s40572" xml:space="preserve">Denique vt, ſi ſuperuacanea reſcindantur,
              <lb/>
            horizontalis linea ſuperiorem ſemper occupet locum, & </s>
            <s xml:id="echoid-s40573" xml:space="preserve">centrum C, in ſuperiori vergat in au-
              <lb/>
            ſtrum, in Boream verò in Inferiori, nec non recta A B, cum linea, quæ meridianam lineam ad re-
              <lb/>
            ctos angulos ſecat, angulum cõſtituat inclinationis planiad Horizontem, & </s>
            <s xml:id="echoid-s40574" xml:space="preserve">communis ſectio pla-
              <lb/>
              <note position="left" xlink:label="note-0628-12" xlink:href="note-0628-12a" xml:space="preserve">Horologiũ diur
                <lb/>
              nũ & nocturnũ.</note>
            ni horologii, & </s>
            <s xml:id="echoid-s40575" xml:space="preserve">plani Horizonti æquidiſtantis ſit ipſa linea meridiana in plano Horizonti pa-
              <lb/>
            rallelo, vel ei æquidiſtans.</s>
            <s xml:id="echoid-s40576" xml:space="preserve"/>
          </p>
          <note position="left" xml:space="preserve">Qui arcus in ho
            <lb/>
          rologio declinã
            <lb/>
          te ab Horizon-
            <lb/>
          te pertineant ad
            <lb/>
          ſigna borealia,
            <lb/>
          & qui ad auſtra
            <lb/>
          lia.</note>
          <p>
            <s xml:id="echoid-s40577" xml:space="preserve">RVRSVS eadem linea horizontalis dirimit totum horologium in diurnum, & </s>
            <s xml:id="echoid-s40578" xml:space="preserve">nocturnum,
              <lb/>
            vt in Verticali horologio dictum eſt.</s>
            <s xml:id="echoid-s40579" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s40580" xml:space="preserve">IN omni autem horologio declinante ab Horizonte arcus ſignorum borealium ſunt verſus
              <lb/>
            auſtrum, & </s>
            <s xml:id="echoid-s40581" xml:space="preserve">auſtralium verſus Boream, hoc eſt, in ſuperiori horologio arcus borealium </s>
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