Barrow, Isaac, Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur

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        <div xml:id="echoid-div7" type="section" level="1" n="7">
          <head xml:id="echoid-head10" xml:space="preserve">
            <emph style="sc">Epistola</emph>
          ad LECTOREM.</head>
          <p style="it">
            <s xml:id="echoid-s23" xml:space="preserve">_
              <emph style="sc">Benigne</emph>
              <emph style="sc">Lector</emph>
            _,
              <lb/>
            MInimè tibi deſtinatum boc quicquid est opellæ,
              <lb/>
            ſtatim ipſe, modò digneris inſpicere, multis ab
              <lb/>
            indiciis deprebendes; </s>
            <s xml:id="echoid-s24" xml:space="preserve">nec tamen ut juris id
              <lb/>
            tui fieret, defuerunt auctores. </s>
            <s xml:id="echoid-s25" xml:space="preserve">quibus tandem,
              <lb/>
            animo certè trepidans atque renitens, idcircò
              <lb/>
            præſertim obſequutus ſum, quoniam in boc, quod ipſe primus
              <lb/>
            obiêrim, munus ſucc@ſſuris exemplo præire rem literariam;
              <lb/>
            </s>
            <s xml:id="echoid-s26" xml:space="preserve">ſi minùs effectu, ſaltem conatu promovendi, non inboneſta,
              <lb/>
            nec ab officio meo aliena videbatur ambitio. </s>
            <s xml:id="echoid-s27" xml:space="preserve">acceſſit tenuis ſpes
              <lb/>
            ineſſe bonæ frugis non-nibil, quod & </s>
            <s xml:id="echoid-s28" xml:space="preserve">aliquatenus tibi proſit,
              <lb/>
            nec omnino diſpliceat. </s>
            <s xml:id="echoid-s29" xml:space="preserve">Memineris autem obteſtor qui in bis
              <lb/>
            literis provectior es, quale ſcriptum attrectas; </s>
            <s xml:id="echoid-s30" xml:space="preserve">non utique
              <lb/>
            tibi ſoli elaboratum; </s>
            <s xml:id="echoid-s31" xml:space="preserve">non ſponte productum; </s>
            <s xml:id="echoid-s32" xml:space="preserve">non diuturnà
              <lb/>
            meditatione ſubactos exbibens feriantis ingenii conceptus; </s>
            <s xml:id="echoid-s33" xml:space="preserve">at
              <lb/>
            Lectiones Scholaſticas; </s>
            <s xml:id="echoid-s34" xml:space="preserve">primùm officii neceſſitate expreſſas; </s>
            <s xml:id="echoid-s35" xml:space="preserve">
              <lb/>
            tum ſubinde properantiùs effuſas, ut abſolveretur penſum, ac
              <lb/>
            bora deflueret; </s>
            <s xml:id="echoid-s36" xml:space="preserve">demùm ad promiſcui literarii populi inſtructi-
              <lb/>
            onem comparatas, cujus intererat complura (qualia tibi vide-
              <lb/>
            buntur) leviora non prætermitti; </s>
            <s xml:id="echoid-s37" xml:space="preserve">ut fruſtrà futurus ſis (id
              <lb/>
            quod te monitum oportuit, nè multùm expectando tibi pariter
              <lb/>
            obſis, ac mibi) accuratum bic quicquam, affabrè poſitum, aut
              <lb/>
            concinnè digestum ſperans. </s>
            <s xml:id="echoid-s38" xml:space="preserve">Enimverò, quò tibi ſatisface-
              <lb/>
            rem, expediret ſcio multa detruncare, meliora ſubstituere,
              <lb/>
            pleraque tranſponere, omnia adincudem limámque revocare; </s>
            <s xml:id="echoid-s39" xml:space="preserve">
              <lb/>
            quæ tamen adniti, nec stomacbi mei, nec otii fuit; </s>
            <s xml:id="echoid-s40" xml:space="preserve">ſed nec
              <lb/>
            facultatis exequi. </s>
            <s xml:id="echoid-s41" xml:space="preserve">in puris itaque naturalibus (quod aiunt)
              <lb/>
            & </s>
            <s xml:id="echoid-s42" xml:space="preserve">prout nata ſunt emittere malui; </s>
            <s xml:id="echoid-s43" xml:space="preserve">quàm operosè lambendo
              <lb/>
            aliam in formam, nec ipſam placituram refingere. </s>
            <s xml:id="echoid-s44" xml:space="preserve">quinimò
              <lb/>
            poſtquam edendi propoſitum inii, ſeu faſtidio correptus ſeu no-
              <lb/>
            vandi ſubiturum ſtudium fugitans, nè quidem borum mag-
              <lb/>
            nam partem relegere ſuſtinui; </s>
            <s xml:id="echoid-s45" xml:space="preserve">verùm, quod tenellæ </s>
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