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="234" file="0248" n="248" rhead="DISSERTATIO"/>
            fuiſſe turbatas, tanta mobilitate donata eſt hæc Acus ut a minimi Ferri
              <lb/>
            viribus aliorſum dirigatur. </s>
            <s xml:id="echoid-s5507" xml:space="preserve">hac Machina Trajecti Anno 1728 Martil 20
              <lb/>
            Declinatio Acus ad Occaſum obſervata fuit 13 graduum & </s>
            <s xml:id="echoid-s5508" xml:space="preserve">20 Minu-
              <lb/>
            torum in Specula Aſtronomica, aliæque ſequentibus diebus De-
              <lb/>
            clinationes ſupra memoratæ pag. </s>
            <s xml:id="echoid-s5509" xml:space="preserve">156. </s>
            <s xml:id="echoid-s5510" xml:space="preserve">notatæ fuerunt.</s>
            <s xml:id="echoid-s5511" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5512" xml:space="preserve">Plurimi Eruditi aliarum formarum machinas finxerunt, eidem
              <lb/>
            deſtinatas ſcopo, de la Hirius in L’Hiſt. </s>
            <s xml:id="echoid-s5513" xml:space="preserve">de L’Acad Roy. </s>
            <s xml:id="echoid-s5514" xml:space="preserve">A°. </s>
            <s xml:id="echoid-s5515" xml:space="preserve">1716.
              <lb/>
            </s>
            <s xml:id="echoid-s5516" xml:space="preserve">aliam deſcripſit; </s>
            <s xml:id="echoid-s5517" xml:space="preserve">Teuberus aliam molitus fuit, proſtantem in Actis
              <lb/>
            Lipſienſibus A°. </s>
            <s xml:id="echoid-s5518" xml:space="preserve">1686. </s>
            <s xml:id="echoid-s5519" xml:space="preserve">pag. </s>
            <s xml:id="echoid-s5520" xml:space="preserve">125. </s>
            <s xml:id="echoid-s5521" xml:space="preserve">diverſam methodum ſuppeditavit
              <lb/>
            Camerarius in Diſſertat. </s>
            <s xml:id="echoid-s5522" xml:space="preserve">Epiſt. </s>
            <s xml:id="echoid-s5523" xml:space="preserve">Taurin. </s>
            <s xml:id="echoid-s5524" xml:space="preserve">pag. </s>
            <s xml:id="echoid-s5525" xml:space="preserve">257. </s>
            <s xml:id="echoid-s5526" xml:space="preserve">aliam Hautefeuille
              <lb/>
            in Fournal des Scavans Anno 1683. </s>
            <s xml:id="echoid-s5527" xml:space="preserve">quam illuſtravit Sturmius in A-
              <lb/>
            ctis Lipſ. </s>
            <s xml:id="echoid-s5528" xml:space="preserve">A°. </s>
            <s xml:id="echoid-s5529" xml:space="preserve">1684. </s>
            <s xml:id="echoid-s5530" xml:space="preserve">Quia has Machinas non in uſum vocare poſ-
              <lb/>
            ſumus, niſi prius accurate lineam Meridianam duxerimus, quod nec
              <lb/>
            ſemper, nec in omnibus locis opportune fieri poteſt: </s>
            <s xml:id="echoid-s5531" xml:space="preserve">tum quoque
              <lb/>
            ab Itineratoribus brevi aliquo in loco commorantibus Declinationes
              <lb/>
            obſervari non poſſent, idcirco aliam invenit perfecitque Machinam
              <lb/>
            ingenioſus artifex, Henricus Sully, quæ proſtat dans une Deſcription
              <lb/>
            abregée d’un horloge A°. </s>
            <s xml:id="echoid-s5532" xml:space="preserve">1726. </s>
            <s xml:id="echoid-s5533" xml:space="preserve">quam exhibet Tab. </s>
            <s xml:id="echoid-s5534" xml:space="preserve">5. </s>
            <s xml:id="echoid-s5535" xml:space="preserve">fig. </s>
            <s xml:id="echoid-s5536" xml:space="preserve">3. </s>
            <s xml:id="echoid-s5537" xml:space="preserve">Qua-
              <lb/>
            drans eſt in ſuos diviſus gradus, firmiter affixus craſſo aſleri ligneo,
              <lb/>
            eique inſiſtens ad angulos rectos, in eodem cum quadrante plano ſty-
              <lb/>
            lus, ſupra quem Acus convertitur, ſtat erectus, Acus 6 pollicum
              <lb/>
            pyxidi æneæ, quater in 90 gradus diviſæ includitur. </s>
            <s xml:id="echoid-s5538" xml:space="preserve">Machina in-
              <lb/>
            ſiſtat tabulæ planæ, Lux Solis per foramen B transmiſſa incidat in
              <lb/>
            medium plani A affixi regulæ mobili B A, tempore Meridiano quæ-
              <lb/>
            ratur maxima Solis altitudo, atque ita intorqueatur Machina, do-
              <lb/>
            nec Sole culminante ſtet in Meridiano, tum ſimul pendulo C D
              <lb/>
            exploretur, an horizontalis ſit, alioquin cochleis I, I, I in
              <lb/>
            ſitum horizonti parallelum reducatur: </s>
            <s xml:id="echoid-s5539" xml:space="preserve">tum Verſorium indicabit De-
              <lb/>
            clinationem a vero Septentrione, hoc modo brevi & </s>
            <s xml:id="echoid-s5540" xml:space="preserve">cito obſervatio
              <lb/>
            fieri poteſt in quocunque loco, quem in finem hæc machina com-
              <lb/>
            mendanda eſt; </s>
            <s xml:id="echoid-s5541" xml:space="preserve">quamvis quidem ita ejus ope non accuratiſſime Decli-
              <lb/>
            natio Acus haberi poſſit, nihilominus errores orientur parvi, nec
              <lb/>
            opinor mari unquam obſervationem capi adhuc tam exactam, quam
              <lb/>
            ope hujus machinæ in continenti colligitur: </s>
            <s xml:id="echoid-s5542" xml:space="preserve">error omnis evitari po-
              <lb/>
            teſt eam in vero Meridiano locando ope obſervatarum fixarum ſecun-
              <lb/>
            dum methodum præſcriptam in Suite des Memoires de L’Acad. </s>
            <s xml:id="echoid-s5543" xml:space="preserve">Roy. </s>
            <s xml:id="echoid-s5544" xml:space="preserve">
              <lb/>
            1718. </s>
            <s xml:id="echoid-s5545" xml:space="preserve">Part. </s>
            <s xml:id="echoid-s5546" xml:space="preserve">1. </s>
            <s xml:id="echoid-s5547" xml:space="preserve">Chap. </s>
            <s xml:id="echoid-s5548" xml:space="preserve">3. </s>
            <s xml:id="echoid-s5549" xml:space="preserve">§. </s>
            <s xml:id="echoid-s5550" xml:space="preserve">4.</s>
            <s xml:id="echoid-s5551" xml:space="preserve"/>
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