Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 1: Opera mechanica

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            accipiat, minus tamen diffundet, longiusque proinde ejacu-
              <lb/>
            labitur.</s>
            <s xml:id="echoid-s5858" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5859" xml:space="preserve">Quantum igitur ad hæc attinet, nihil admodum referre
              <lb/>
            liquet quænam fuerit teleſcopii longitudo, ſed æque facile
              <lb/>
            qualiacunque in uſum deduci. </s>
            <s xml:id="echoid-s5860" xml:space="preserve">Aliquod tantum diſcrimen in
              <lb/>
            varia mali altitudine poſitum eſſe. </s>
            <s xml:id="echoid-s5861" xml:space="preserve">Cujus quidem parandæ
              <lb/>
            plures modi ſuppetunt. </s>
            <s xml:id="echoid-s5862" xml:space="preserve">Poſſumus enim, uno ſtatuto malo,
              <lb/>
            alium ejus opera duplo altiorem juxta attollere, ac ſimul fir-
              <lb/>
            miorem reddere, transverſis fibulis utrumque conſerendo.
              <lb/>
            </s>
            <s xml:id="echoid-s5863" xml:space="preserve">Ac firmiſſima quidem fuerit compages hujusmodi, ſi duo
              <lb/>
            mali humiliores, cum tertio duplæ altitudinis, binis ternis-
              <lb/>
            ve pedibus inter ſe diſtent, in triangulum diſpoſiti, atque
              <lb/>
            uti diximus religati. </s>
            <s xml:id="echoid-s5864" xml:space="preserve">Qua ratione facile ad centum pedum
              <lb/>
            altitudinem perveniemus. </s>
            <s xml:id="echoid-s5865" xml:space="preserve">Ad multo majores vero, vel vali-
              <lb/>
            diori malorum ac trabium ſubſtructione utendo, vel ad tur-
              <lb/>
            rim aut ædificii altioris angulum inferiora ligna applicando; </s>
            <s xml:id="echoid-s5866" xml:space="preserve">
              <lb/>
            ita ut nihil tamen obſtet, quo minus, ab imo ad ſummum,
              <lb/>
            lens primaria adducatur, per continuum canaliculum, uti
              <lb/>
            diximus, aſcendens. </s>
            <s xml:id="echoid-s5867" xml:space="preserve">Sed & </s>
            <s xml:id="echoid-s5868" xml:space="preserve">ſuper turri aut domus culmine
              <lb/>
            erigi malus poteſt, ut ibi adſtet is cui funis cura demandata
              <lb/>
            eſt, ad evehendam demittendamve lentem.</s>
            <s xml:id="echoid-s5869" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5870" xml:space="preserve">Nec vero præpropera aut ſupervacua cura hæc à nobis a-
              <lb/>
            gitari quis putet, quod veriſimile non ſit his altitudinibus
              <lb/>
            opus fore. </s>
            <s xml:id="echoid-s5871" xml:space="preserve">Ecce enim, dum hæc ſcribo, Caſſini literis certior
              <lb/>
            fio, lentes quatuor, quarum maxima teleſcopio pedum cen-
              <lb/>
            tum quadraginta deſtinata ſit, à Joſepho Campano, eaſque
              <lb/>
            præſtantiſſimas Romæ eſſe perfectas, & </s>
            <s xml:id="echoid-s5872" xml:space="preserve">ad magnum Galliæ
              <lb/>
            Regem miſſas. </s>
            <s xml:id="echoid-s5873" xml:space="preserve">Etſi enim ad cœleſtium obſervationem non-
              <lb/>
            dum fuere admotæ, non dubitandum tamen interdiu inſtitu-
              <lb/>
            tum fuiſſe earum examen, in atriis porticibuſve prælongis
              <lb/>
            unde lux excluſa eſſet. </s>
            <s xml:id="echoid-s5874" xml:space="preserve">Nunc vero, hoc noſtro invento, uti-
              <lb/>
            litas ſua tum his lentibus, tum ſi quæ has longitudine exce-
              <lb/>
            dentes prodeant, conſtabit.</s>
            <s xml:id="echoid-s5875" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5876" xml:space="preserve">Quod ſi cogitemus quibus modis teleſcopiorum efficaciam
              <lb/>
            alii augere ſtuduerint; </s>
            <s xml:id="echoid-s5877" xml:space="preserve">quæ fruſtra illi quæſiverunt, ea nos
              <lb/>
            levi hac opera conſecutos eſſe videri poſſit. </s>
            <s xml:id="echoid-s5878" xml:space="preserve">Sive enim </s>
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