Bošković, Ruđer Josip, Theoria philosophiae naturalis redacta ad unicam legem virium in natura existentium

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          <head xml:space="preserve">AD LECTOREM
            <lb/>
          EX EDITIONE VIENNENSI.</head>
          <p style="it">
            <s xml:space="preserve">HAbes, amice Lector, Pbiloſopbiæ Naturalis Theoriam
              <lb/>
            ex unica lege virium deductam, quam & </s>
            <s xml:space="preserve">ubi jam
              <lb/>
            olim adumbraverim, vel etiam ex parte explicaverim,
              <lb/>
            & </s>
            <s xml:space="preserve">qua occaſione nunc uberius pertractandam, atque
              <lb/>
            augendam etiam, ſuſceperim, invenies in ipſo primæ
              <lb/>
            partis exordio. </s>
            <s xml:space="preserve">Libuit autem hoc opus dividere in par-
              <lb/>
            tes tres, quarum prima continet explicationem Theoriæ ipſius, ac ejus
              <lb/>
            analyticam deductionem, & </s>
            <s xml:space="preserve">vindicationem; </s>
            <s xml:space="preserve">ſecunda applicationem ſatis
              <lb/>
            uberem ad Mechanicam; </s>
            <s xml:space="preserve">tertia applicationem ad Phyſicam.</s>
            <s xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:space="preserve">Porro illud inprimis curandum duxi, ut omnia, quam liceret, dilucide
              <lb/>
            exponerentur, nec ſublimiore Geometria, aut Calculo indigerent. </s>
            <s xml:space="preserve">Et qui-
              <lb/>
            dem in prima, ac tertia parte non tantum nullæ analyticæ, ſed nec geo-
              <lb/>
            metricæ demonſtrationes occurrunt, pauciſſimis quibuſdam, quibus indigeo,
              <lb/>
            rejectis in adnotatiunculas, quas in fine paginarum quarundam invenies.
              <lb/>
            </s>
            <s xml:space="preserve">Quædam autem admodum pauca, quæ majorem Algebræ, & </s>
            <s xml:space="preserve">Geometriæ
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            cognitionem requirebant, vel erant complicatiora aliquanto, & </s>
            <s xml:space="preserve">alibi a me
              <lb/>
            jam edita, in fine operis appoſui, quæ Supplementorum appellavi nomi-
              <lb/>
            ne, ubi & </s>
            <s xml:space="preserve">ea addidi, quæ ſentio de ſpatio, ac tempore, Theoriæ meæ
              <lb/>
            conſentanea, ac edita itidem jam alibi. </s>
            <s xml:space="preserve">In ſecunda parte, ubi ad Mecha-
              <lb/>
            nicam applicatur Theoria, a geometricis, & </s>
            <s xml:space="preserve">aliquando etiam ab alge-
              <lb/>
            braicis demonſtrationibus abſtinere omnino non potui; </s>
            <s xml:space="preserve">ſed eæ ejuſmodi
              <lb/>
            ſunt, ut vix unquam requirant aliud, quam Euclideam Geometriam, & </s>
            <s xml:space="preserve">
              <lb/>
            primas Trigonometriæ notiones maxime ſimplices, ac ſimplicem algorith-
              <lb/>
            mum.</s>
            <s xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:space="preserve">In prima quidem parte occurrunt Figuræ geometricæ complures, quæ
              <lb/>
            prima fronte videbuntur etiam complicatæ rem ipſam intimius non perſpe-
              <lb/>
            ctanti; </s>
            <s xml:space="preserve">verum eæ nihil aliud exhibent, niſi imaginem quandam rerum,
              <lb/>
            quæ ipſis oculis per ejuſmodi figuras ſiſtuntur contemplandæ. </s>
            <s xml:space="preserve">Ejuſmodi
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            eſt ipſa illa curva, quæ legem virium exhibet. </s>
            <s xml:space="preserve">Invenio ego quidem </s>
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