Marci of Kronland, Johannes Marcus, De proportione motus figurarum recti linearum et circuli quadratura ex motu, 1648

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              ſuccuſſione fit cylindri: qui non niſi ex inæquali orbiculorum
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              lapſu, aut cùm plaga in alios impingit, dilabitur. </s>
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              <s>
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              Verùm dubitatio non levis occurrit. </s>
              <s>Nam ſi orbiculi inter ſe æqua­
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              les & contigui longî ſerie diſponantur in lineâ; rectà; percuſſo primo ul­
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              timus movetur non eadem ratione: verùm pro numero orbiculorum
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              minùs, quouſ〈que〉 omnes à plagâ ſint immoti. </s>
              <s>Marceſcit ergo illâ exten­
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              ſione impulſus; ne〈que〉 totaplaga in ſingulos propagatur. </s>
              <s>Atqui eadem
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              ratio videtur ſphærularum: quomodo ergo per infinitas hunc extendi
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              volumus, quem in orbiculis cito videmus terminari.
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              <s>Reſpondeo dici poſſe, quòd ſi orbiculi per omnia ſint æqua­
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              les, in lineâ centri gravitatis ſitum habentes, eadem ratione,
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              quâ in ſphærulis interminabilem fore motum. </s>
              <s>Verùm
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              quia illorum centrum non neceſſariò eſt idem cum centro
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              gravitatis; cùm partes habeant à ſe differentes: inde fieri ut
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              centrum gravitatis
                <expan abbr="plerumq;">plerumque</expan>
              ſit extra illam lineam, quæ tran­
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              ſit per centra orbiculorum. </s>
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              <s>Quôd ſi ita: non iam una omninm eſt plaga; ſed minor quæ
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              percutit obliquè: neceſſe ergo dum eâ ratione mutatur cen­
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              trum gravitatis, impulſum minui, ac demum deficere. </s>
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              <s>Reſpondeo ſecundò, illam poſitionem de interminabili mo­
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              tu ſphærularum non niſi ut probabilem aſſumi. </s>
              <s>Vt verò
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              gratiam ineamus etiam cum his, qui eam averſantur; videa­
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              mus ſi quâ ratione hunc motum, omnibus immotis, quæ pro
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              fundamento ſunt adducta, terminare valeamus. </s>
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              <s>Cùm ergo ſphærula prima ſecundam hæc tertiam percutit;
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              dico inæqualem fieri plagam. </s>
              <s>Nam quia impulſus inæquali­
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              ter recipitur in mobili; prout nimirum partes magis, minùſuè
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              abſunt à plagâ; quæ tamen æquationem habent à centro </s>
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