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-s26780" xml:space="preserve">
              <pb o="407" file="0423" n="423" rhead="LIBER TERTIVS."/>
              <figure xlink:label="fig-0423-01" xlink:href="fig-0423-01a" number="280">
                <image file="0423-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0423-01"/>
              </figure>
              <note position="left" xlink:label="note-0423-01" xlink:href="note-0423-01a" xml:space="preserve">10</note>
              <note position="left" xlink:label="note-0423-02" xlink:href="note-0423-02a" xml:space="preserve">20</note>
              <note position="left" xlink:label="note-0423-03" xlink:href="note-0423-03a" xml:space="preserve">30</note>
              <note position="left" xlink:label="note-0423-04" xlink:href="note-0423-04a" xml:space="preserve">40</note>
            drans circuli Verticalis proprie dicti includatur. </s>
            <s xml:id="echoid-s26781" xml:space="preserve">Domos ergo cæleſtes in eodem horologio decli-
              <lb/>
            nante ſimul & </s>
            <s xml:id="echoid-s26782" xml:space="preserve">inclinato collocauimus. </s>
            <s xml:id="echoid-s26783" xml:space="preserve">Quod faciendum erat.</s>
            <s xml:id="echoid-s26784" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div1360" type="section" level="1" n="328">
          <head xml:id="echoid-head339" style="it" xml:space="preserve">SCHOLIVM.</head>
          <p style="it">
            <s xml:id="echoid-s26785" xml:space="preserve">NECESSE eſt autem, rectam K B D, quæ perpendicularis ducta eſt ad Verticalem lineam, vltra
              <lb/>
            K, locum ſtyli productam tranſire per punctum E, vbi ſe interſecant mutuo meridiana linea, & </s>
            <s xml:id="echoid-s26786" xml:space="preserve">linea
              <lb/>
              <note position="left" xlink:label="note-0423-05" xlink:href="note-0423-05a" xml:space="preserve">50</note>
            horizontalis: </s>
            <s xml:id="echoid-s26787" xml:space="preserve">quoniam communis ſectio eſt plani horologij, & </s>
            <s xml:id="echoid-s26788" xml:space="preserve">circuli poſitionis, qui ad planum horolo-
              <lb/>
            gij rect{us} eſt, tranſit{q́ue} per communes ſectiones Meridiani, atque Horizontis, atque adeo planum horolo-
              <lb/>
            gij ſecat in puncto E, ſicut & </s>
            <s xml:id="echoid-s26789" xml:space="preserve">reliqui circuli poſitionum, ſiue domorum cœleſtium, vt in propoſ. </s>
            <s xml:id="echoid-s26790" xml:space="preserve">8. </s>
            <s xml:id="echoid-s26791" xml:space="preserve">huius
              <lb/>
            libri demonſtratum est. </s>
            <s xml:id="echoid-s26792" xml:space="preserve">Nam quia circulus poſitionis per polos Verticalis circuli, & </s>
            <s xml:id="echoid-s26793" xml:space="preserve">plani horologij
              <lb/>
            duct{us}, rectus eſt & </s>
            <s xml:id="echoid-s26794" xml:space="preserve">ad Verticalem circulum, & </s>
            <s xml:id="echoid-s26795" xml:space="preserve">ad planum horologij, ex propoſ. </s>
            <s xml:id="echoid-s26796" xml:space="preserve">15. </s>
            <s xml:id="echoid-s26797" xml:space="preserve">lib. </s>
            <s xml:id="echoid-s26798" xml:space="preserve">1. </s>
            <s xml:id="echoid-s26799" xml:space="preserve">Theod. </s>
            <s xml:id="echoid-s26800" xml:space="preserve">tran-
              <lb/>
            ſibit idem omnino per ſtylum A K, in proprio ſitu poſitum; </s>
            <s xml:id="echoid-s26801" xml:space="preserve">(quòd omnia plana per stylum d@@@a ad pla
              <lb/>
              <note position="right" xlink:label="note-0423-06" xlink:href="note-0423-06a" xml:space="preserve">18. vndec.</note>
            num horologij recta ſint) at que adeò per punctum K. </s>
            <s xml:id="echoid-s26802" xml:space="preserve">Quia verò è contr ario ad dictum circulum poſitio-
              <lb/>
            nis rectum eſt & </s>
            <s xml:id="echoid-s26803" xml:space="preserve">planum Verticalis circuli, & </s>
            <s xml:id="echoid-s26804" xml:space="preserve">planum horologij, erit quoque communis horum ſectio,
              <lb/>
            hoc est, Verticalis linea C B, ad eundem circulum poſitionis perpendicularis, ac proinde, per defin. </s>
            <s xml:id="echoid-s26805" xml:space="preserve">3.
              <lb/>
            </s>
            <s xml:id="echoid-s26806" xml:space="preserve">
              <note position="right" xlink:label="note-0423-07" xlink:href="note-0423-07a" xml:space="preserve">19. vndec.</note>
            lib. </s>
            <s xml:id="echoid-s26807" xml:space="preserve">11. </s>
            <s xml:id="echoid-s26808" xml:space="preserve">Eucl. </s>
            <s xml:id="echoid-s26809" xml:space="preserve">& </s>
            <s xml:id="echoid-s26810" xml:space="preserve">ad communem ſectionem eiuſdem circuli, ac plani horologij in eo exiſtentem. </s>
            <s xml:id="echoid-s26811" xml:space="preserve">Cum ergo
              <lb/>
            C B, ad K B, perpendicularis ſit ex conſtructione, erit K B, communis ſectio dicti circuli poſitionis, &</s>
            <s xml:id="echoid-s26812" xml:space="preserve"/>
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