Fabri, Honoré, Tractatus physicus de motu locali, 1646
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              ſeorſim producere poteſt. </s>
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              <s id="N12BF8">Dices ſi vterque coniunctim producit effectum: </s>
              <s id="N12BFC">ſint v. g. 100. par­
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              tes impetus; Igitur ſinguli producunt tantùm 50. Igitur cur potiùs in
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              in his partibus ſubiecti, quàm in alijs, cum vtriuſque potentia eidem
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              ſubiecti parti poſſet eſſe applicata? </s>
              <s id="N12C0A">Reſpondeo ſingulos producere 100.
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              actione ſcilicet communi indiuiſibiliter; </s>
              <s id="N12C10">ſint enim duo trahentes A. &
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              B. A. producit 100. ſed non ſolus; </s>
              <s id="N12C16">B. producit eaſdem 100. ſed non ſo­
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              lus; ſed explicabimus hunc modum actionis communis in Metaphys.
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              quod autem agant actione communi patet per Ax. 13. </s>
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              <s id="N12C21">Obiicies 4. producitur ſonus ſi ferias rupem; </s>
              <s id="N12C25">igitur & impetus; </s>
              <s id="N12C29">Reſ­
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              pondeo ad ſonum ſolam aëris colliſionem ſufficere, quam fieri certum
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              eſt à prædicto ictu; </s>
              <s id="N12C31">deinde mallej motus impacti in rupem facit ſonum; </s>
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              quidquid tandem ſit ſonus, de quo hîc non diſputo: </s>
              <s id="N12C3A">adde quod in ru­
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              pe ſunt ſemper aliquæ partes tremulæ, quæ modico tantùm, eoque flexi­
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              bili nexu cum alijs partibus copulantur; adde aliquam compreſſionem,
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              ex qua modicæ vibrationes ſequuntur. </s>
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              <s id="N12C46">Obiicies 5. Quando aliquæ partes auolant ab ictu, haud dubiè auo­
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              lant propter impetum impreſſum: </s>
              <s id="N12C4C">Igitur prius eſt imprimi impetum,
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              quàm auolare; igitur productus eſt impetus in nonnullis partibus, &
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              non in aliis, cum quibus illæ ſunt coniunctæ. </s>
              <s id="N12C54">Reſpondeo equidem im­
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              petum produci in illis partibus antequam auolent; </s>
              <s id="N12C5A">ſed ideo produci vt
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              deinde auolent nam tota ratio cur non producatur, eſt ne ſit fruſtrà; </s>
              <s id="N12C60">ſed
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              ſi auolent aliquæ partes: certè in ijs non eſt fruſtrà, in quibus habet
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              ſuum effectum, id eſt, motum. </s>
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              <s id="N12C6A">Dices; </s>
              <s id="N12C6D">igitur primo inſtanti impetus ille eſt fruſtrà; </s>
              <s id="N12C71">in quo non
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              habet ſuum effectum; </s>
              <s id="N12C77">Reſpondeo nunquam primo inſtanti eſſe fruſtrà,
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              modò ſit motus ſecundo cum etiam primo inſtanti, quo eſt impetus,
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              non poſſit eſſe motus, vt demonſtrabo infrà; immò ideo ponitur im­
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              petus primo vt ſit motus ſecundo exigendo pro inſtant ſequenti, de
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              cum impetus ponat tantùm motum quo aliàs. </s>
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              <s id="N12C85">Dices; </s>
              <s id="N12C88">ſed potentia motrix neſcit an poſſit pars aliqua mobilis ſepa­
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              rari; igitur non eſt quòd aliquando producat impetum, aliquando
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              non producat. </s>
              <s id="N12C90">Reſpondeo non ſtare per cauſam neceſſariam, quin ſem­
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              per agat; </s>
              <s id="N12C96">ſed per ſubiectum, quod ſi aptum eſt, & capax effectus; </s>
              <s id="N12C9A">haud
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              dubiè eo ipſo cauſa neceſſaria applicata in ipſum aget; ſi verò ineptum. </s>
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              haud dubiè non aget; </s>
              <s id="N12CA4">nam ad hoc vt producatur effectus in ſubiecto; </s>
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              non ſatis eſt cauſam poſſe producere, niſi etiam ſubiectum poſſit recipe­
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              re; </s>
              <s id="N12CAF">igitur cum ſit talis ordo à natura inſtitutus, ne aliquid ſit fruſtrà; </s>
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              certè ſi impetus producibilis ſit futurus fruſtrà, hauddubiè non produ­
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              cetur; ſecus verò ſi fruſtrà non ſit futurus, in quo non eſt difficultas. </s>
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              Scholium.
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              <s id="N12CCA">Obſeruabis 1. vix fieri poſſe quin ſemper aliquæ partes ſeparentur,
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              comprimantur, vel dilatentur, vt patet experientiâ. </s>
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              <s id="N12CD1">Obſeruabis 2. etiam maximam corporis molem à debili potentia mi-</s>
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