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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              <pb o="12" file="0026" n="26" rhead="DISSERTATIO"/>
            perflato, nec plus diſtent, quam ut in ſe agere queant; </s>
            <s xml:id="echoid-s387" xml:space="preserve">ambæ ſcaphæ
              <lb/>
            ſibi adnatabunt, & </s>
            <s xml:id="echoid-s388" xml:space="preserve">ſibi in medio quodam intervalli puncto occur-
              <lb/>
            rent; </s>
            <s xml:id="echoid-s389" xml:space="preserve">quod accurate medium fuiſſet, ſi tum ſcaphæ, tum Magnetes
              <lb/>
            ejusdem ponderis & </s>
            <s xml:id="echoid-s390" xml:space="preserve">magnitudinis fuiſſent.</s>
            <s xml:id="echoid-s391" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s392" xml:space="preserve">Attingent ſe ſcaphæ in aliquibus punctis, in quibus contactus ſem-
              <lb/>
            per repetetur, quotieſcunque ambas a ſe removeris. </s>
            <s xml:id="echoid-s393" xml:space="preserve">Invertatur au-
              <lb/>
            tem alterutra Scapha, ut latere priori oppoſito Magnes Magnetem
              <lb/>
            reſpiciat, a ſe invicem ambo recedent, atque æquali velocitate fu-
              <lb/>
            gient: </s>
            <s xml:id="echoid-s394" xml:space="preserve">Spectari iidem effectus facilius poſſunt hoc modo: </s>
            <s xml:id="echoid-s395" xml:space="preserve">Vide Tab.
              <lb/>
            </s>
            <s xml:id="echoid-s396" xml:space="preserve">I. </s>
            <s xml:id="echoid-s397" xml:space="preserve">Fig. </s>
            <s xml:id="echoid-s398" xml:space="preserve">I. </s>
            <s xml:id="echoid-s399" xml:space="preserve">Magnes C funi alligatus ſuspendatur ex Bilancis brachio
              <lb/>
            B, factoque æquilibrio cum pondere Lanci A impoſito, infra C ali-
              <lb/>
            us ponatur Magnes D; </s>
            <s xml:id="echoid-s400" xml:space="preserve">illico cum impetu ruit C verſus D, elevat-
              <lb/>
            que pondus A, haud aliter ac ſi gravitatem, ſimilemve impetum ſibi
              <lb/>
            conciliaſſet.</s>
            <s xml:id="echoid-s401" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s402" xml:space="preserve">Quod ſi converteris Magnetem D, ut oppoſito latere reſpiciat C,
              <lb/>
            fugit a D, adſcendit, ſeſe quaſi leviorem reddit, nec ad æquilibri-
              <lb/>
            um pervenit unquam, niſi vel pondere aggravetur, vel D removea-
              <lb/>
            tur: </s>
            <s xml:id="echoid-s403" xml:space="preserve">quod ſi D ponatur in ſuperiori loco E, iterum accedit Magnes
              <lb/>
            C ad E, ſed converſo Magnete E, recedit C deſcendendo in locum
              <lb/>
            inferiorem, quam ubi æquilibrium fecit. </s>
            <s xml:id="echoid-s404" xml:space="preserve">Ex hiſce binis igitur effe-
              <lb/>
            ctibus, quos edunt in ſe Magnetes, manifeſto liquet, eos in ſe agere,
              <lb/>
            actiones mutuas eſſe æquales, & </s>
            <s xml:id="echoid-s405" xml:space="preserve">proinde Reactionem dari æqualem
              <lb/>
            Actioni.</s>
            <s xml:id="echoid-s406" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s407" xml:space="preserve">Hæc Magnetis vis in admirationem rapuit Plinium, qui Lib. </s>
            <s xml:id="echoid-s408" xml:space="preserve">36.
              <lb/>
            </s>
            <s xml:id="echoid-s409" xml:space="preserve">cap. </s>
            <s xml:id="echoid-s410" xml:space="preserve">16. </s>
            <s xml:id="echoid-s411" xml:space="preserve">in hæc verba erumpit: </s>
            <s xml:id="echoid-s412" xml:space="preserve">Quid Magnete mirabilius, aut qua
              <lb/>
            in parte Naturæ major improbitas? </s>
            <s xml:id="echoid-s413" xml:space="preserve">dederat vocem ſaxis reſponden-
              <lb/>
            tem homini, ſed quid Lapidis rigore pigrius? </s>
            <s xml:id="echoid-s414" xml:space="preserve">ecce ſenſus manusque
              <lb/>
            tribuit illi: </s>
            <s xml:id="echoid-s415" xml:space="preserve">quid Ferri duritie pugnacius? </s>
            <s xml:id="echoid-s416" xml:space="preserve">ſed cedit & </s>
            <s xml:id="echoid-s417" xml:space="preserve">patitur mo-
              <lb/>
            res: </s>
            <s xml:id="echoid-s418" xml:space="preserve">trahitur namque a Magnete Lapide, domitrixque illa rerum
              <lb/>
            omnium materia ad inane neſcio quid currit; </s>
            <s xml:id="echoid-s419" xml:space="preserve">atque ut propius ve-
              <lb/>
            nit, aſſiſtit, teneturque, & </s>
            <s xml:id="echoid-s420" xml:space="preserve">complexu hæret. </s>
            <s xml:id="echoid-s421" xml:space="preserve">Quando etiam Tha-
              <lb/>
            les Mileſius ad Magnetis operationes quondam attendebat, quæ ad-
              <lb/>
            miranda varietate ſuum percellebant animum, neque ab externa pro-
              <lb/>
            ficiſci cauſa videbantur, Animam Magneti attribuere non dubitavit,
              <lb/>
            ſecumque conſentientem in eadem ſententia poſtea habuit Scaligerum.</s>
            <s xml:id="echoid-s422" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s423" xml:space="preserve">Cognito Magnetum verſus ſe invicem acceſſu, indagandum </s>
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