Marci of Kronland, Johannes Marcus, De proportione motus, seu regula sphygmica ad celeritatem et tarditatem pulsuum, 1639
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                ritate & tarditate à ſe differentes,
                  <expan abbr="quorũ">quorum</expan>
                inæqualia ſunt
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                durationis momenta. </s>
                <s id="N1460C">Quia ergo motus perpendiculi
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                eſt illorum menſura; erit quidem æqualium pulſuum æ­
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                qualis, inæqualium verò inæqualis in ea ratione, in quâ
                  <lb/>
                velocitas pulſuum. </s>
                <s id="N14615">At verò recurſus & excurſus perpen
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                diculi ex eadem productione inter ſe ſunt æquales: pro­
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                pterea quód perpendiculum ex quolibet puncto
                  <expan abbr="eiuſdẽ">eiuſdem</expan>
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                circuli æquali tempore recurrit in ſuam ſtationem per
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                Prop: 24. ſunt autem excurſus
                  <expan abbr="quoq́">quoque</expan>
                ; inter ſe æquales per
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                Prop: 25. excurſus ergo & recurſus in unà circulatione
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                ſimul ſumpti ſunt æquales excurſibus & recurſibus o­
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                mnium circulationum ſimul
                  <expan abbr="quoq́">quoque</expan>
                ; ſumptis: & quia uni
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                æqualium pulſuum circulatio aſſumpta eſt æqualis, e­
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                runt reliquæ circulationes reliquis pulſibus æquales.
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                Motus ergo perpendiculi ex eádem productione fili
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                metitur pulſus inter ſe æquales. </s>
                <s id="N1463A">Quia verò motus per­
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                pendiculi per arcus ſimiles inæqualium circulorum ra­
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                tionem habent ad ſe quam ſinus illorum arcuum, hoc eſt
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                lineæ ſubtenſæ arcus dupli, per Prop: 25. ac proinde
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                quam habent motus per diametrum illorum circulo­
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                rum per Prop: 15. motus autem per diametrum ſe habent
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                ut quadrata temporum per Prop: 12. </s>
                <s id="N14649">Si ſumatur radix
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                quadrata illius proportionis, quam habent diametri ad
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                ſe, erunt in eadem ratione tempora motus, in quà radices
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                quadratæ: ut ſi diameter maioris circuli ad diametrum </s>
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