Clavius, Christoph, Geometria practica

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          <figure number="7">
            <image file="029-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/029-01"/>
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        <div xml:id="echoid-div15" type="section" level="1" n="15">
          <head xml:id="echoid-head17" xml:space="preserve">PRÆFATIO.</head>
          <p>
            <s xml:id="echoid-s110" xml:space="preserve">
              <emph style="sc">QVandoqvidem</emph>
            Mathematica-
              <lb/>
            rum diſciplinarum ſtadium ſcribendo ingreſſi,
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            nonnullam eius partem, fauente Deo, percurri-
              <lb/>
            mus: </s>
            <s xml:id="echoid-s111" xml:space="preserve">Geometriæ practicæ tractatio omittenda
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            non fuit, vt niſi metam tangere licuerit, ab illa cer-
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            tè quam minimè diſtemus. </s>
            <s xml:id="echoid-s112" xml:space="preserve">Ætatem ſenectute
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            grauem allicit operis iucunditas, laborem leuat
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            varietas, amicorum preces tantum non cogunt, quò mea ferebar
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            ſponte, ſumma cumfeſtinatione properare. </s>
            <s xml:id="echoid-s113" xml:space="preserve">Et verò, cum perpetua
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            multorum annorum experientia compererim, admodum paucos eſ-
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            ſe, qui non in Mathematicis exerceantur eo conſilio, vt quæ didicerint,
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            ad aliquem vſum trahant: </s>
            <s xml:id="echoid-s114" xml:space="preserve">in hoc quicquid eſt laboris veniebam ala-
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            cer, vt qui fructus è Mathematicis percipi poſſint ad humanæ vitæ
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            commoda, non inani venditatione, ſed re ipſa conſtaret. </s>
            <s xml:id="echoid-s115" xml:space="preserve">Etenim dum
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            certa ratio traditur, qua camporum longitudines, altitudines mon-
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            tium, vallium depreſſiones, locorum omnium inæqualitates inter ſe,
              <lb/>
            & </s>
            <s xml:id="echoid-s116" xml:space="preserve">interualla deprehendere metiendo debeamus: </s>
            <s xml:id="echoid-s117" xml:space="preserve">cuilibet liquet, vt
              <lb/>
            arbitror, quantum commodi, vtilitatiſque ſubſtructioni ædificiorum,
              <lb/>
            cultui agrorum, armorum tractationi, contemplationi ſiderum, aliiſ-
              <lb/>
            que artibus, & </s>
            <s xml:id="echoid-s118" xml:space="preserve">diſciplinis ex horum cognitione manare poſſit. </s>
            <s xml:id="echoid-s119" xml:space="preserve">Hæc e-
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            nim vna Mathematicarum rerum ſcientiæ pars, ſicut ab artificibus ob
              <lb/>
            ſui neceſſitatem auidè ſemper eſt arrepta: </s>
            <s xml:id="echoid-s120" xml:space="preserve">ita ob inſignes vtilitates,
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            quas in retota militari ſuppeditat, in maximorum Principum, Regum-
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            que aulis omni tempeſtate verſata eſt. </s>
            <s xml:id="echoid-s121" xml:space="preserve">Quamobrem & </s>
            <s xml:id="echoid-s122" xml:space="preserve">multos, & </s>
            <s xml:id="echoid-s123" xml:space="preserve">eru-
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            ditos viros habuit, qui partes illius omnes accurata, & </s>
            <s xml:id="echoid-s124" xml:space="preserve">diligenti ſcri-
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            ptione perſecuti ſunt: </s>
            <s xml:id="echoid-s125" xml:space="preserve">Inter quos, vt Leonhardus Piſanus, Frater Lucas
              <lb/>
            Pacciolus, Nicolaus Tartalea, Orontius, Cardanus, aliique præcipuas
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            obtinuerunt: </s>
            <s xml:id="echoid-s126" xml:space="preserve">ita eximia in cæteris laude floruerunt. </s>
            <s xml:id="echoid-s127" xml:space="preserve">Primas tamẽ adiu-
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            dicarim 10. </s>
            <s xml:id="echoid-s128" xml:space="preserve">Antonio Magino præſtanti Mathematico; </s>
            <s xml:id="echoid-s129" xml:space="preserve">qui tam etſi tantũ
              <lb/>
            lin earum dimenſiones docuit, ea tamen copia, doctrina, perſpicacita-
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            te cuncta tradidit, vt locum non modo iis, qui ante ſcripſerunt, ſed
              <lb/>
            ſpem poſteris æqualis gloriæ, ne dum maioris, ademiſſe videatur. </s>
            <s xml:id="echoid-s130" xml:space="preserve"/>
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