Clavius, Christoph, In Sphaeram Ioannis de Sacro Bosco commentarius

Table of figures

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              <pb o="281" file="317" n="318" rhead="Ioan. de Sacro Boſco."/>
              <figure xlink:label="fig-317-01" xlink:href="fig-317-01a" number="83">
                <image file="317-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/317-01"/>
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            monis ante meridiem decreſcit, eadem poſt meridiem augeatur, neceſſe eſt,
              <lb/>
            vt facile demonſtrari poteſt ex ſphæricis elementis. </s>
            <s xml:id="echoid-s11807" xml:space="preserve">His itaque duobus pũctis
              <lb/>
            G, & </s>
            <s xml:id="echoid-s11808" xml:space="preserve">H, quorum illud eodem interuallo ante meridiem, quo hoc poſt meri-
              <lb/>
            diem diſtat, ſumma diligentia habitis, diuidendus erit arcus GH, bifariã linea
              <lb/>
            recta B D, quæ per centrum E, extenditur. </s>
            <s xml:id="echoid-s11809" xml:space="preserve">Hæc enim linea erit meridiana, in
              <lb/>
            quam ſi umbra ſtyli proijciatur, meridiem inſtare dubium non eſt. </s>
            <s xml:id="echoid-s11810" xml:space="preserve">Erit igitur
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            recta B D, communis ſectio Horizontis, & </s>
            <s xml:id="echoid-s11811" xml:space="preserve">meridiani circuli. </s>
            <s xml:id="echoid-s11812" xml:space="preserve">Quod ſi hanc
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            ad angulos rectos ſe cuerimus linea recta A C, indicabit punctum A, punctum
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            ortus tempore æquinoctij, punctum vero C, puuctum occaſus, ut ſi recta A C,
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            communis ſectio Horizontis, & </s>
            <s xml:id="echoid-s11813" xml:space="preserve">Verticalis proprie dicti. </s>
            <s xml:id="echoid-s11814" xml:space="preserve">Sunt quidem multæ
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            aliæ rationes non minus certæ ad inueniendam lineam meridianam, qualis eſt
              <lb/>
            illa, quam ex Analemmate tradidi in ſcholio propoſ. </s>
            <s xml:id="echoid-s11815" xml:space="preserve">23. </s>
            <s xml:id="echoid-s11816" xml:space="preserve">lib. </s>
            <s xml:id="echoid-s11817" xml:space="preserve">1. </s>
            <s xml:id="echoid-s11818" xml:space="preserve">Gnomonices,
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            quæ omnium, meo iudicio, certiſſima eſt; </s>
            <s xml:id="echoid-s11819" xml:space="preserve">ſed hæc, quam explicaui, multo expe
              <lb/>
            ditior eſt cæteris omnibus, & </s>
            <s xml:id="echoid-s11820" xml:space="preserve">ab Aſtronomis magis vſurpata.</s>
            <s xml:id="echoid-s11821" xml:space="preserve"/>
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            <s xml:id="echoid-s11822" xml:space="preserve">
              <emph style="sc">Inventa</emph>
            autem tanto labore ſemel linea meridiana in dicto plano,
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            reperiemus ſumma facilitate alias innumeras lineas meridianas in alijs planis
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              <note position="right" xlink:label="note-317-01" xlink:href="note-317-01a" xml:space="preserve">Qua arte e@
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              @na linea
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              meridiana
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              inue@ta in-
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              numeręalię
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              inueniãtur.</note>
            hoc modo. </s>
            <s xml:id="echoid-s11823" xml:space="preserve">Obſeruetur tempus meridiei, hoc eſt, quando umbra gnomonis in
              <lb/>
            lineam metidianam iam inuentã incidit præciſe; </s>
            <s xml:id="echoid-s11824" xml:space="preserve">Si enim tũcin quolibe@ alio
              <lb/>
            plano filum ſubtile cũ perpendiculo manu ſuſtinueris,@ eiuſq; </s>
            <s xml:id="echoid-s11825" xml:space="preserve">umbrã in plano
              <lb/>
            duobus punctis notaueris, erit linea recta, quæ p@r hæc duo puncta </s>
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