Fabri, Honoré, Tractatus physicus de motu locali, 1646

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              in quo ſit parallelum horizonti; </s>
              <s id="N25976">haud dubiè extremitas grauior præit motu
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              mixto
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              ; </s>
              <s id="N2597F">quia ſcilicet quaſi ab aliâ leuiore retinetur, exemplum habes in
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              ſagittâ ferro armatâ, & in fune ex quo plumbum pendet; ratio euiden­
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              tiſſima eſt; </s>
              <s id="N25987">quia illa extremitas faciliùs medij reſiſtentiam ſuperat, igitur
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              præire debet; </s>
              <s id="N2598D">igitur motu mixto; </s>
              <s id="N25991">illa tamen tardiùs deſcendit, quàm
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              deſcenderet, ſi à leuiore eſſet ſeparata; </s>
              <s id="N25997">leuior verò velociùs, quàm ſi eſ­
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              ſet ſolitaria; quod autem non ſit alia ratio, patet potiſſimum ex eo, quòd
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              plumbum ita demiſſum, vt funis præeat, tandem funem aſſequitur, & tan­
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              dem à tergo relinquit. </s>
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              Corollarium
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              1.
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              </s>
            </p>
            <p id="N259B0" type="main">
              <s id="N259B2">Hinc petenda eſt vera ratio illius phœnomeni, quod iam ſuprà l. 3.
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              indicauimus, ſcilicet ſagittam plùs temporis ponere in deſcenſu, quàm
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              in aſcenſu minoremque infligere ictum, quàm leuius lignum, & multò
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              leuior penna cuſpidis ferreæ motum retardat. </s>
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                <emph type="center"/>
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              Corollarium
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              2.
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              </s>
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              <s id="N259CE">Si altera extremitas ſagittæ plumis inſtruatur, licèt proijciatur motu
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              violento ſurſum extremitas ferro armata præit plumis à tergo relictis; </s>
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              ratio eſt, quia aër fortiùs reſiſtit pluuis, quàm ferro, vel ligno; igitur ca­
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              rum motum retardat. </s>
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            <p id="N259DB" type="main">
              <s id="N259DD">
                <emph type="center"/>
                <emph type="italics"/>
              Corollarium
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              3.
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              </s>
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              <s id="N259EC">Hinc ſagitta pennis attonſis fertur in incertum, & ſcopum fallit, cui
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              fuerat deſtinata; </s>
              <s id="N259F2">quia licèt lignum minore vi polleat, quàm ferrum; </s>
              <s id="N259F6">vix
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              tamen ſenſibilis eſt differentia; </s>
              <s id="N259FC">adde quod minima deflexio, vel decli­
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              natio ad retrò agendum ferrum ſufficit; corpus enim facilè mouetur mo­
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              tu mixto ex recto, & circulari. </s>
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            <p id="N25A04" type="main">
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                <emph type="center"/>
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              Corollarium.
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              4.
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              </s>
            </p>
            <p id="N25A13" type="main">
              <s id="N25A15">Hinc ratio illius iaculi breui cuſpide armati, cuius altera extremitas
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              decuſſatim fiſſa craſſiore charta paululùm expanſa munitur, quę deflexio­
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              nem impedit; </s>
              <s id="N25A1D">cuius rei analogiam habes in nauis gubernaculo; </s>
              <s id="N25A21">eſt enim
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              ad inſtar quadruplicis claui motum dirigentis; </s>
              <s id="N25A27">quîppe inclinari non
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              poteſt, niſi multum aëris pellant alæ illæ chartaceæ: In ſagitta aliquid
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              ſimile habes. </s>
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              Corollarium
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              5.
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              </s>
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            <p id="N25A3E" type="main">
              <s id="N25A40">Hinc ſi euibretur iaculum illud per horizontalem v.g. circa pro­
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              prium axem conuoluitur; </s>
              <s id="N25A48">quia aër tenues illas tranſuerberat alas, ex
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              qua aëris vel colliſione, vel appulſu, vel quaſi reflexione facilè ſequitur
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              circularis motus, qui nullatenus impedit rectum, vt iam dixi ſuprà; </s>
              <s id="N25A50">ſed
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              cum eo motum mixtum componit, de quo paulò pòſt; nunc tantùm ſuf­
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              ficiat attigiſſe veriſſimam rationem illorum gyrorum. </s>
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            <p id="N25A58" type="main">
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              Corollarium
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              6.
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              </s>
            </p>
            <p id="N25A67" type="main">
              <s id="N25A69">Simile phœnomenum habes in illis volatilibus calamis, qui multis
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              copiam ludi faciunt; </s>
              <s id="N25A6F">nam primò tignea illa, vel oſſea theca, cui com-</s>
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