Descartes, René, Renati Des-Cartes principia philosophiae
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              XLIX.
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              Quarta. </s>
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              20</s>
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              55</s>
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              Quintò, ſi corpus quieſcens C eſſet minus quàm B,
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              tunc quantumvis tarde B verſus C moveretur, illud
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              ſecum moveret, partem ſilicet ſui motûs ei talem
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              transferendo, ut ambo poſtea aequè celeriter moveren­
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              tur: nempe, ſi B eſſet duplo majus quàm C, transferret
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              ipſi tertiam partem ſui motûs, quia una illa tertia pars
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              tam celeriter moveret corpus C, quàm duae reſi­
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              duae corpus B duplo majus. </s>
              <s>Et ita, poſtquam B ipſi C
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              occurriſſet, unà tertiâ parte tardiús moveretur quàm
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              priús, hoc eſt tantundem temporis requireret, ut mo­
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              veretur per ſpatium duorum pedum, quàm priús ut
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              moveretur per ſpatium trium. </s>
              <s>ſodem modo, ſi B eſſet
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              triplo majus quàm C, transferret ipſi quartam partem
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              ſui motûs; & ſic de caeteris a. </s>
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              L.
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              Quinta. </s>
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              5</s>
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              10</s>
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              Sextà, ſi corpus C quieſcens eſſet accuratiſſimè
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              aequale corpori B verſus illud moto, partim ab ipſo
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              impelleretur, & partim ipſum in contrariam partem
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              repelleret: nempe, ſi B veniret verſus C cum quatuor
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              gradibus celeritatis, communicaret ipſi C unum gra­
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              dum, & cum tribus reſiduis reflecteretur verſus par­
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              tem adverſam b. </s>
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              L.
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              Sexta. </s>
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              15</s>
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              20</s>
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              Denique, ſi B & C verſus eandem partem moveren­
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              tur, C quidem tardiús, B autem illud inſequens cele­
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              riús, ita ut ipſum tandem attingeret, eſſetque C majus
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              quàm B, ſed exceſſus celeritatis in B eſſet major, quàm
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              exceſſus magnitudinis in C: tunc B transferret tantum
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              de ſuo motu in C, ut ambo poſtea aequè celeriter & in
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              eaſdem partes moverentur. </s>
              <s>Si autem à contra exceſſus
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              celeritatis in B minor eſſet, quàm exceſſus </s>
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