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

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              <s>Cùm enim TP menſura plagæ, quam recipit orbiculus C
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              ex A, ſit minor quàm AP ſinus rectus grad: 60; qui reliquum
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              impulſum, quo centrum A moveretur à plagâ, metitur; erit ut
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              AP ad PT, ita motûs in A admotum in C. </s>
              <s>Quia verò or­
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              biculus A percutit æqualem D, occurrit verò eidem in lineâ
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              centri; dabit plagam perfectam: ac proinde per 1 poriſma A
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              quidem à motu conquieſcet, D verò eadem velocitate feretur. </s>
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              <s>Verùm licet hypomochlium GP eâ ratione impulſum partia­
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              tur; quia tamen
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              plaga fit ſimul; habebit plaga ex A ad
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              plagam ex P eam rationem, quam AT ad PT. </s>
              <s>Cùm enim
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              vectis ſit AT, cuius fulcimentum in T; erit per prop: 3 Gui­
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              di Vbaldi, ut AT ad PT, ita gravitas appenſain A adean­
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              dem gravitatem appenſam in P. </s>
              <s>At verò eandem rationem
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              habet vis ſurſum impellens, quam gravitas deorſum movens:
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              quòd gravitas non niſi mediante impulſu agat. </s>
              <s>Quòd ſi
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              totus impulſus in AT ſit partium 42; & TP pars ſexta AT;
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              erit plaga TP in primâ quidem partitione, quam hypomo­
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              chlium GP inducit, partium 7: impulſus verò reliquus in A
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              partium 35. </s>
              <s>At verò cùm percuſſio geminatur; plaga ex A
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              quidem eſt partium 36, ex P verò partium 6. </s>
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              <s>Secet nunc orbiculum D, non per centrum, diameter pro­
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              ducta ex puncto medio inter F&H: in quo eundem percutiat
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              alius orbiculus æqualis: dico immoto A
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              orbiculum
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              C & D moveri. </s>
              <s>Ducantur per contactus GI lineæ hypomo­
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              chlij eidem diametro parallelæ: quas ſecent lineæ perpendicu­
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              lares ex A. erit itaq, huic quidem æqualis linea ex G perpendi­
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              cularis ad eandem diametrum ſinus grad: 45. propterea quod
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              GI ſit grad: 60
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              huius ſemiſſis VI grad: 30. cuius comple­
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              mentum 2928992 menſura plagæ in C. </s>
              <s>Rurſum quia FI
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              eſt grad: 165; erit ſemiſſis ſinus rectus grad: 82 pr:30. cuius </s>
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