Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

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          <head xml:id="echoid-head279" xml:space="preserve">VI.</head>
          <head xml:id="echoid-head280" style="it" xml:space="preserve">Excerpta ex litteris D
            <emph style="super">ni</emph>
          . Hugenii Acad. Reg. ſcient.
            <lb/>
          Socii, ad auctorem Diarii Paris. de novo Mi-
            <lb/>
          croſcopio ex Hollandia allato.</head>
          <p>
            <s xml:id="echoid-s10811" xml:space="preserve">MIcroſcopium hoc ex unico formatur exiguo globulo vi-
              <lb/>
            treo, ſimili illis, quibus in Hollandia & </s>
            <s xml:id="echoid-s10812" xml:space="preserve">Anglia ani-
              <lb/>
            malcula fuere obſervata in aqua puteali & </s>
            <s xml:id="echoid-s10813" xml:space="preserve">pluvia, ut & </s>
            <s xml:id="echoid-s10814" xml:space="preserve">illa in
              <lb/>
            qua piper fuit maceratum, de quibus egiſti in 9. </s>
            <s xml:id="echoid-s10815" xml:space="preserve">& </s>
            <s xml:id="echoid-s10816" xml:space="preserve">11. </s>
            <s xml:id="echoid-s10817" xml:space="preserve">diario
              <lb/>
            hujus anni (1678); </s>
            <s xml:id="echoid-s10818" xml:space="preserve">ſed globuli de quibus nunc ago aliis hiſce
              <lb/>
            minores ſunt.</s>
            <s xml:id="echoid-s10819" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10820" xml:space="preserve">Inter ipſos quos ex Hollandia attuli quidam magnitudine
              <lb/>
            non ſuperant arenæ granulum; </s>
            <s xml:id="echoid-s10821" xml:space="preserve">alii adeo exigui ſunt ut vix vi-
              <lb/>
            deri queant, quare objecta in immenſum amplificant; </s>
            <s xml:id="echoid-s10822" xml:space="preserve">eo enim
              <lb/>
            hæc majora apparent quo globuli ſunt minores.</s>
            <s xml:id="echoid-s10823" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10824" xml:space="preserve">Objectum obſervandum inter vitri laminam & </s>
            <s xml:id="echoid-s10825" xml:space="preserve">lapidis ſpe-
              <lb/>
            cularis lamellam includitur; </s>
            <s xml:id="echoid-s10826" xml:space="preserve">hæc machinæ adaptantur quæ
              <lb/>
            mihi aliis huc uſque uſitatis magis commoda videtur. </s>
            <s xml:id="echoid-s10827" xml:space="preserve">Exigua
              <lb/>
            guttula æquæ, in qua per duos aut tres dies piper fuit mace-
              <lb/>
            ratum, ita incluſa, magna videtur natantibus piſciculis bene re-
              <lb/>
            pleta piſcina.</s>
            <s xml:id="echoid-s10828" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10829" xml:space="preserve">Quæ pecularia circa aquam hanc obſervavi, ne quæ in
              <lb/>
            diario veſtro ſunt relata iterum memorem, hæc ſunt; </s>
            <s xml:id="echoid-s10830" xml:space="preserve">ex
              <lb/>
            omni pipere non eadem generantur animalcula; </s>
            <s xml:id="echoid-s10831" xml:space="preserve">piper quod-
              <lb/>
            dam animalcula ceteris majora format, ſive hoc a piperis ve-
              <lb/>
            tuſtate pendeat, ſive ab alia cauſa, quæ in ſequentibus de-
              <lb/>
            tegi poterit.</s>
            <s xml:id="echoid-s10832" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10833" xml:space="preserve">Similia animalcula ex aliis ſeminibus ut ex ſemine corian-
              <lb/>
            dri etiam producuntur.</s>
            <s xml:id="echoid-s10834" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10835" xml:space="preserve">Hoc idem obſervavi in ſucco Betulæ, ubi per quinque
              <lb/>
            aut ſex dies hunc ſervaveram.</s>
            <s xml:id="echoid-s10836" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10837" xml:space="preserve">Quidam animalcula viderunt in aqua in qua nux aroma-
              <lb/>
            tica, aut caſia, maceratæ fuere: </s>
            <s xml:id="echoid-s10838" xml:space="preserve">& </s>
            <s xml:id="echoid-s10839" xml:space="preserve">probabile admodum eſt
              <lb/>
            in multis aliis rebus ſimilia detegi poſſe.</s>
            <s xml:id="echoid-s10840" xml:space="preserve"/>
          </p>
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