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-div2010" type="section" level="1" n="513">
          <p>
            <s xml:id="echoid-s40581" xml:space="preserve">
              <pb o="613" file="0629" n="629" rhead="LIBER SEPTIMVS."/>
            continentur inter æquinoctialem lineam, & </s>
            <s xml:id="echoid-s40582" xml:space="preserve">cẽtrum: </s>
            <s xml:id="echoid-s40583" xml:space="preserve">in inferiori vero arcus ſignorum auſtralium
              <lb/>
            verſus centrum deſcripti ſunt, &</s>
            <s xml:id="echoid-s40584" xml:space="preserve">c. </s>
            <s xml:id="echoid-s40585" xml:space="preserve">Eodem quoque modo hic iudicabimus, qui arcus ſignorum
              <lb/>
              <figure xlink:label="fig-0629-01" xlink:href="fig-0629-01a" number="397">
                <image file="0629-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0629-01"/>
              </figure>
              <note position="left" xlink:label="note-0629-01" xlink:href="note-0629-01a" xml:space="preserve">10</note>
              <note position="left" xlink:label="note-0629-02" xlink:href="note-0629-02a" xml:space="preserve">20</note>
              <note position="left" xlink:label="note-0629-03" xlink:href="note-0629-03a" xml:space="preserve">30</note>
            ſint hyperbolæ, & </s>
            <s xml:id="echoid-s40586" xml:space="preserve">qui parabolæ, & </s>
            <s xml:id="echoid-s40587" xml:space="preserve">qui Ellipſes, vt in horologio declinante à Verticali cap. </s>
            <s xml:id="echoid-s40588" xml:space="preserve">24.
              <lb/>
            </s>
            <s xml:id="echoid-s40589" xml:space="preserve">diximus.</s>
            <s xml:id="echoid-s40590" xml:space="preserve"/>
          </p>
          <note position="left" xml:space="preserve">40</note>
          <p>
            <s xml:id="echoid-s40591" xml:space="preserve">QVOD ſi omnia lineamenta horologii ſuperioris ad occaſum ſpectantis deſcribantur in alio
              <lb/>
              <note position="right" xlink:label="note-0629-05" xlink:href="note-0629-05a" xml:space="preserve">Qua ratione ex
                <lb/>
              horologio ad
                <lb/>
              occaſum ſpe-
                <lb/>
              ctante fiat horo
                <lb/>
              logium ſpectans
                <lb/>
              ad orum & cõ-
                <lb/>
              tra.</note>
            plano, ita vt, quæ ſunt ad dexteram ipſius lineæ meridianæ ſita, fiant ſiniſtra, & </s>
            <s xml:id="echoid-s40592" xml:space="preserve">è contrario, con-
              <lb/>
            ſtructum erit horologium ſuperius ad ortum ſpectans, commutatis horarum numeris in earum
              <lb/>
            complementa vſque ad 12. </s>
            <s xml:id="echoid-s40593" xml:space="preserve">Huiuſmodi ſunt lineamenta horologii, quod ad occaſum ſpectat, in
              <lb/>
            parte oppoſita deſcripta, vt ſingulæ ſingulis lineis ad vnguem reſpondeant. </s>
            <s xml:id="echoid-s40594" xml:space="preserve">Eodem modo
              <lb/>
            horologium quod ad ortum ſpectat, mutari poterit in aliud, quod ad occaſum ſpectet, ſi illa per-
              <lb/>
            mutatio linearum & </s>
            <s xml:id="echoid-s40595" xml:space="preserve">numerorum fiat. </s>
            <s xml:id="echoid-s40596" xml:space="preserve">Immo & </s>
            <s xml:id="echoid-s40597" xml:space="preserve">inferius orientale eadem ratione mutabitur in
              <lb/>
            inferius occidentale, & </s>
            <s xml:id="echoid-s40598" xml:space="preserve">contra.
              <lb/>
            </s>
            <s xml:id="echoid-s40599" xml:space="preserve">
              <note position="right" xlink:label="note-0629-06" xlink:href="note-0629-06a" xml:space="preserve">Conſtructio ho
                <lb/>
              rologii Italici,
                <lb/>
              & Babylonici
                <lb/>
              ab Horizont@
                <lb/>
              de@iinantis.</note>
            </s>
          </p>
          <p>
            <s xml:id="echoid-s40600" xml:space="preserve">HOROLOGIVM tam Italicum, quàm Babylonicum deſcribetur, vt ſupra diximus, ſi ni-
              <lb/>
            mirum circulus ex L, deſcriptus ſecetur in arcum diurnum ♋, a N b, & </s>
            <s xml:id="echoid-s40601" xml:space="preserve">diurnum ♑, d N e, vt an-
              <lb/>
              <note position="left" xlink:label="note-0629-07" xlink:href="note-0629-07a" xml:space="preserve">50</note>
            te docuimus, diuiſioq́ue eiuſdem circuli initium ſumat pro horologio Italico à punctis b, e, oc-
              <lb/>
            cidentalibus, pro Babylonico vero à punctis a, d, orientalibus. </s>
            <s xml:id="echoid-s40602" xml:space="preserve">Exemplum habes in hora 21. </s>
            <s xml:id="echoid-s40603" xml:space="preserve">ab
              <lb/>
            occ. </s>
            <s xml:id="echoid-s40604" xml:space="preserve">Nam exm, puncto horę 21. </s>
            <s xml:id="echoid-s40605" xml:space="preserve">ab occ. </s>
            <s xml:id="echoid-s40606" xml:space="preserve">in tropico ♑, ducta recta per L, ſecat æquinoctialem li-
              <lb/>
            neam in n; </s>
            <s xml:id="echoid-s40607" xml:space="preserve">recta autem ex C, per n, ducta ſecat tropicum ♑, in p, puncto horæ 21. </s>
            <s xml:id="echoid-s40608" xml:space="preserve">ab occ. </s>
            <s xml:id="echoid-s40609" xml:space="preserve">& </s>
            <s xml:id="echoid-s40610" xml:space="preserve">c.</s>
            <s xml:id="echoid-s40611" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s40612" xml:space="preserve">QVOD ad deſcriptionem ex arcubus diurnis, nocturnisq́ue depromptam attinet, nulla eſt
              <lb/>
              <note position="right" xlink:label="note-0629-08" xlink:href="note-0629-08a" xml:space="preserve">Alia deſcriptio
                <lb/>
              horologii Itali-
                <lb/>
              ci, & Babylonſ-
                <lb/>
              ci ab Horizonte
                <lb/>
              declinantis, ex
                <lb/>
              arcubus d@ut-
                <lb/>
              nis, nocturnis.</note>
            difficultas, ſi tamen, quotieſcunque hora aliqua ab or. </s>
            <s xml:id="echoid-s40613" xml:space="preserve">vel occ. </s>
            <s xml:id="echoid-s40614" xml:space="preserve">non habet punctum in arcubus
              <lb/>
            diurnis, nocturnisve, accipiatur eiuſdem numeri hora ab occ. </s>
            <s xml:id="echoid-s40615" xml:space="preserve">vel or. </s>
            <s xml:id="echoid-s40616" xml:space="preserve">&</s>
            <s xml:id="echoid-s40617" xml:space="preserve">c. </s>
            <s xml:id="echoid-s40618" xml:space="preserve">vt in ſuperioribus di-
              <lb/>
            ctum eſt. </s>
            <s xml:id="echoid-s40619" xml:space="preserve">Verbi gratia, quia hora 12. </s>
            <s xml:id="echoid-s40620" xml:space="preserve">ab occ. </s>
            <s xml:id="echoid-s40621" xml:space="preserve">in arcu diurno horarum 14. </s>
            <s xml:id="echoid-s40622" xml:space="preserve">nullum punctum habet,
              <lb/>
            vt conſtat ex tabella 3. </s>
            <s xml:id="echoid-s40623" xml:space="preserve">propoſ. </s>
            <s xml:id="echoid-s40624" xml:space="preserve">33. </s>
            <s xml:id="echoid-s40625" xml:space="preserve">lib. </s>
            <s xml:id="echoid-s40626" xml:space="preserve">1. </s>
            <s xml:id="echoid-s40627" xml:space="preserve">accipiemus horam 12. </s>
            <s xml:id="echoid-s40628" xml:space="preserve">ab or. </s>
            <s xml:id="echoid-s40629" xml:space="preserve">eamq́ue, vt vult dicta tabella
              <lb/>
            3. </s>
            <s xml:id="echoid-s40630" xml:space="preserve">ducemus per horam 5. </s>
            <s xml:id="echoid-s40631" xml:space="preserve">à mer. </s>
            <s xml:id="echoid-s40632" xml:space="preserve">in arcu diurno horar ũ 14. </s>
            <s xml:id="echoid-s40633" xml:space="preserve">& </s>
            <s xml:id="echoid-s40634" xml:space="preserve">per horã 6. </s>
            <s xml:id="echoid-s40635" xml:space="preserve">à mer. </s>
            <s xml:id="echoid-s40636" xml:space="preserve">(vt vult tabella 6.
              <lb/>
            </s>
            <s xml:id="echoid-s40637" xml:space="preserve">propoſ. </s>
            <s xml:id="echoid-s40638" xml:space="preserve">33. </s>
            <s xml:id="echoid-s40639" xml:space="preserve">lib. </s>
            <s xml:id="echoid-s40640" xml:space="preserve">1.) </s>
            <s xml:id="echoid-s40641" xml:space="preserve">in arcu nocturno horarum 12. </s>
            <s xml:id="echoid-s40642" xml:space="preserve">Hæc enim producta dabit etiam horam 12. </s>
            <s xml:id="echoid-s40643" xml:space="preserve"/>
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