Musschenbroek, Petrus van, Physicae experimentales, et geometricae de magnete, tuborum capillarium vitreorumque speculorum attractione, magnitudine terrae, cohaerentia corporum firmorum dissertationes: ut et ephemerides meteorologicae ultraiectinae

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            <s xml:id="echoid-s12698" xml:space="preserve">
              <pb o="539" file="0555" n="556" rhead="CORPORUM FIRMORUM."/>
            nuit libras 3 {10/16}, ſed directio ponderis â foramine, cum frangeretur.
              <lb/>
            </s>
            <s xml:id="echoid-s12699" xml:space="preserve">diſtabat tantum 9 {1/2} pollicibus.</s>
            <s xml:id="echoid-s12700" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div472" type="section" level="1" n="472">
          <head xml:id="echoid-head584" xml:space="preserve">EXPERIMENTUM CLXI.</head>
          <p>
            <s xml:id="echoid-s12701" xml:space="preserve">Quod Cortici proximum fractum fuit a libris 3 {3/16} extremo appen-
              <lb/>
            ſis, inflectebatur omnium minime, nam 10 pollicibus ponderis di-
              <lb/>
            rectio a foramine diſtabat, cum frangeretur.</s>
            <s xml:id="echoid-s12702" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s12703" xml:space="preserve">Liquet ex his Experimentis omnes Trunci partes non eſſe æque
              <lb/>
            flexiles, meditullio proximas eſſe flexiliores iis, quæ corticiſunt
              <lb/>
            propinquiores: </s>
            <s xml:id="echoid-s12704" xml:space="preserve">nam parallelopipedum 11 pollicum meditullii, an-
              <lb/>
            tequam frangebatur, inflexum fuit, ut modo 9 pollicibus a forami-
              <lb/>
            ne diſtaret ponderis directio, cum quod cortici proximum ad 10
              <lb/>
            pollicum diſtantiam â foramine ponderis directionem habuerit,
              <lb/>
            quando rumpebatur: </s>
            <s xml:id="echoid-s12705" xml:space="preserve">Vulgari opinioni hoc penitus adverſatur quip-
              <lb/>
            pe magis flexibile creditur lignum quod recentius, fragilius quod
              <lb/>
            annoſius eſt, in trunci ſubſtantia id falſum, verum in ramis exiſtit:
              <lb/>
            </s>
            <s xml:id="echoid-s12706" xml:space="preserve">oleum, quo meditullium trunci copioſius gaudet, quam partes cor-
              <lb/>
            tici proximæ, facit ut meditullium flexibilius exiſtat.</s>
            <s xml:id="echoid-s12707" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s12708" xml:space="preserve">Præterea obſervamus in his Experimentis, Cohærentiam partium
              <lb/>
            per totam Trunci craſſitiem admodum diſcrepare: </s>
            <s xml:id="echoid-s12709" xml:space="preserve">tanta quippe pa-
              <lb/>
            rallelopipedi ex meditullio Cohærentia eſt, ut ruptum fuiſſet a li-
              <lb/>
            bris 162. </s>
            <s xml:id="echoid-s12710" xml:space="preserve">ad diſtantiam o, 25 pollicis a foramine applicatis; </s>
            <s xml:id="echoid-s12711" xml:space="preserve">ſed pa-
              <lb/>
            rallelopipedum ſecundum ad eandem diſtantiam frangeretur a libris
              <lb/>
            148: </s>
            <s xml:id="echoid-s12712" xml:space="preserve">Tertium a libris 152. </s>
            <s xml:id="echoid-s12713" xml:space="preserve">quartum a libris 156. </s>
            <s xml:id="echoid-s12714" xml:space="preserve">quintum a libris
              <lb/>
            138. </s>
            <s xml:id="echoid-s12715" xml:space="preserve">ſextum a libris 128. </s>
            <s xml:id="echoid-s12716" xml:space="preserve">Adeoque firmiſſimum eſt meditullium:
              <lb/>
            </s>
            <s xml:id="echoid-s12717" xml:space="preserve">debiliſſimum Lignum cortici proximum: </s>
            <s xml:id="echoid-s12718" xml:space="preserve">in intermediis lignis in-
              <lb/>
            æqualitas datur, quæ pendet a diverſo modo, quo partes concre-
              <lb/>
            verunt, quod fieri potuit, quia uno anno æſtas fuerit calidior, fri-
              <lb/>
            gidiorve; </s>
            <s xml:id="echoid-s12719" xml:space="preserve">humidior, ſicciorve altero, ita ut partes a cortice for-
              <lb/>
            matæ fuerint nunc denſiores & </s>
            <s xml:id="echoid-s12720" xml:space="preserve">rigidiores, nunc rariores & </s>
            <s xml:id="echoid-s12721" xml:space="preserve">mollio-
              <lb/>
            res: </s>
            <s xml:id="echoid-s12722" xml:space="preserve">Idcirco arbitror Cohærentiam truncorum omnium arborum
              <lb/>
            fore admodum diverſam, nec id ipſum præciſe ſemper obſervatum
              <lb/>
            iri, quod mihi in hiſce Experimentis videre contigit.</s>
            <s xml:id="echoid-s12723" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s12724" xml:space="preserve">Lignum unius ejuſdemque generis diverſa firmitate donati anno-
              <lb/>
            tavit Cl. </s>
            <s xml:id="echoid-s12725" xml:space="preserve">Parentius in L’Hiſt de L’Acad. </s>
            <s xml:id="echoid-s12726" xml:space="preserve">Roy: </s>
            <s xml:id="echoid-s12727" xml:space="preserve">A
              <emph style="super">o</emph>
            . </s>
            <s xml:id="echoid-s12728" xml:space="preserve">1707. </s>
            <s xml:id="echoid-s12729" xml:space="preserve">cum </s>
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