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-s4390" xml:space="preserve">
              <pb o="189" file="0203" n="203" rhead="DE MAGNETE."/>
            infra horizontem in regionibus Europæis, angulum aliquem cum eo
              <lb/>
            faciendo; </s>
            <s xml:id="echoid-s4391" xml:space="preserve">ſupra horizontem proinde pars F O tantopere elevabi-
              <lb/>
            tur.</s>
            <s xml:id="echoid-s4392" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s4393" xml:space="preserve">Depreſſionem Acus infra horizontem Philoſophi hodierni vocant
              <lb/>
            Inclinationem, Gilbertus Lib. </s>
            <s xml:id="echoid-s4394" xml:space="preserve">5. </s>
            <s xml:id="echoid-s4395" xml:space="preserve">Declinationem vocavit.</s>
            <s xml:id="echoid-s4396" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s4397" xml:space="preserve">Illam primus invenit Robertus Normannus, Brittannus, Anno
              <lb/>
            1576, teſte Gilberto Lib. </s>
            <s xml:id="echoid-s4398" xml:space="preserve">1. </s>
            <s xml:id="echoid-s4399" xml:space="preserve">C. </s>
            <s xml:id="echoid-s4400" xml:space="preserve">1. </s>
            <s xml:id="echoid-s4401" xml:space="preserve">Hic, inquit, eſt ille Robertus
              <lb/>
            Normannus, nauta peritus & </s>
            <s xml:id="echoid-s4402" xml:space="preserve">ingenioſus artifex, qui primus De-
              <lb/>
            clinationem magnetici ferri invenit: </s>
            <s xml:id="echoid-s4403" xml:space="preserve">ante Gilbertum etiam Gui-
              <lb/>
            lelmus Borough in præfatione libelli de variatione pyxidis, Nor-
              <lb/>
            mannum inventorem deprædicavit: </s>
            <s xml:id="echoid-s4404" xml:space="preserve">Commemorat Normannus in
              <lb/>
            ſuo Tractatu New Attractive Cap. </s>
            <s xml:id="echoid-s4405" xml:space="preserve">3. </s>
            <s xml:id="echoid-s4406" xml:space="preserve">quo caſu in hoc inventum in-
              <lb/>
            cidit: </s>
            <s xml:id="echoid-s4407" xml:space="preserve">Acus elaborare ſolebat Nauticas, quæ in ſitu horizontali ſi-
              <lb/>
            bi æquilibratæ, ſimulac ſuper Magnete ducebantur, cuſpide Boreâ
              <lb/>
            infra horizontem inclinabant, quamobrem oppoſitæ parti Acûs te-
              <lb/>
            nebatur tantillum ceræ affigere, quæ ſuo pondere æquilibrium re-
              <lb/>
            ſtitueret; </s>
            <s xml:id="echoid-s4408" xml:space="preserve">poſtea ab Acûs ſex pollicum parte Boreâ aliquid abſcidit.
              <lb/>
            </s>
            <s xml:id="echoid-s4409" xml:space="preserve">ſed paulo plus per infortunium, hinc perdito æquilibrio indignatus,
              <lb/>
            ope machinæ alterius explorandum prius duxit, quantum Acus, prius
              <lb/>
            æquilibrata, infra horizontem deprimeretur, poſtquam vim Magne-
              <lb/>
            ticam accepiſſet, machinam perfecit, quam deſcripſit in Cap. </s>
            <s xml:id="echoid-s4410" xml:space="preserve">4. </s>
            <s xml:id="echoid-s4411" xml:space="preserve">ſui
              <lb/>
            libelli.</s>
            <s xml:id="echoid-s4412" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s4413" xml:space="preserve">Hac Inclinatione igitur Acui nauticæ nova veluti gravitas additur
              <lb/>
            in hac regione â parte Septentrionali, quare ut horizonti parallela
              <lb/>
            maneat, artifices caudam Auſtralem graviorem cuſpide Borea fabri-
              <lb/>
            cantur: </s>
            <s xml:id="echoid-s4414" xml:space="preserve">ſed in terræ hemiſphærio Auſtrali Acûs cauda, quæ in Eu-
              <lb/>
            ropa ſurſum elevata erat, infra horizontem inclinat, cuſpide Borea
              <lb/>
            ſurſum ſpectante: </s>
            <s xml:id="echoid-s4415" xml:space="preserve">Quamobrem nautæ ea in telluris parte aliis Ver-
              <lb/>
            ſoriis uti tenentur, quorum cauda eſt cuſpide levior: </s>
            <s xml:id="echoid-s4416" xml:space="preserve">Operæ pre-
              <lb/>
            tium erit de Inclinatione Acus prolixius agere, cum â recentiſſimis
              <lb/>
            Philoſophis in lucem iterum ê tenebris protracta, maximi in doctri-
              <lb/>
            nâ Magneticâ, & </s>
            <s xml:id="echoid-s4417" xml:space="preserve">ad locorum longitudines determinandas, creditur
              <lb/>
            eſſe momenti; </s>
            <s xml:id="echoid-s4418" xml:space="preserve">licet huic ſcopo forte minus conveniat, promoven-
              <lb/>
            dæ nihilominus doctrinæ Magneticæ inſerviet.</s>
            <s xml:id="echoid-s4419" xml:space="preserve"/>
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