Fabri, Honoré, Tractatus physicus de motu locali, 1646

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              tum primum puncti AC, & totius axis AB, quamdiu deſcendit vterque,
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              eſſe æqualem; </s>
              <s id="N28BA8">quod tamen dici non poteſt, quia conatus ſingulorum
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              punctorum ſeorſim ſunt æquales; </s>
              <s id="N28BAE">ſed conatus omnium coniunctim eſt
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              maior conatu ſingulorum; </s>
              <s id="N28BB4">nam ſingula habent ſuum impetum; verum
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              eſt quidem moueri motu æquali, quia ſingula æquali impetu mouentur. </s>
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              Tertiò, quia vult poſito cylindro ſupra baſim 4. illam immediatè premi
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              à puncto EB, hoc verò punctum à puncto DE, & hoc ab CD, & hoc ab
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              AC; </s>
              <s id="N28BC3">quod tamen dici non poteſt; quis enim dicat granulum ſuperpoſi­
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              tum rupi in illam grauitare? </s>
              <s id="N28BC9">Equidem cum illa grauitat grauitatione
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              communi, vt dictum eſt ſuprà, non tamen in illam. </s>
              <s id="N28BCE">Quartò, quia dicit
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              pumum B cum conatu totius cylinèri incubantis eo tempore, quo pun­
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              ctum AC conficeret AC, conficere AB, quod repugnat progreſſioni
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              Galilei, quam ſequitur ipſe; </s>
              <s id="N28BD8">quia conatus ſunt, vt velocitates; </s>
              <s id="N28BDC">hæ verò
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              vt tempora; ſed ſpatia in ratione duplicata temporum. </s>
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              <s id="N28BE4">Denique non video, quomodo ex his etiam datis demonſtret pro­
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              portionem quæſitam percuſſionis, & grauitationis; </s>
              <s id="N28BEA">igitur non eſt conſu­
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              lendum ſpatium, ſed tempus eo modo, quo diximus; </s>
              <s id="N28BF0">ſi enim punctum
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              moueatur per 1000. inſtantia, acquiret mille puncta impetus; </s>
              <s id="N28BF6">igitur ha­
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              bebit 1001. igitur ſi aſſumatur corpus, quod conſtet 1001. punctis habe­
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              bit 1001. puncta impetus, id eſt ſingula in ſingulis; quæ cum omnia gra­
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              uitent grauitatione communi, æqualis eſt priori effectus. </s>
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              <s id="N28C02">Decimoſextò, hinc vides, quàm ſit difficilis, vel potiùs impoſſibilis
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              huius proportionis inuentio, ex cuius cognitione tempus reſoluitur in
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              ſua inſtantia, immò & quantitas in ſua puncta: primum quidem; </s>
              <s id="N28C0A">ſit enim
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              data moles, cuius grauitatio æqualis eſt ictui alterius cadentis dato
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              tempore; haud dubiè tot ſunt inſtantia in toto illo tempore, quoties
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              pondus cadens continetur in grauitante, vt patet ex dictis. </s>
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              <s id="N28C16">Decimoſeptimò, poteſt aſſumi perexigua pars temporis pro inſtanti
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              phyſico, nec tam ſenſibilis erit error, & modicum ſpatium pro puncto
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              phyſico, vt deinde mechanicè procedatur ad indagandam hanc propor­
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              tionem percuſſionis, & grauitationis. </s>
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            <p id="N28C1F" type="main">
              <s id="N28C21">Decimooctauò, poteſt explicari quomodo defigatur palus ab ictu
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              corporis deorſum cadentis. </s>
              <s id="N28C26">Primò enim, ideò defigitur, quia materia
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              mollior cedit non ſine aliqua compreſſione. </s>
              <s id="N28C2B">Secundò, hinc in mucro­
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              nem deſinere debet, vt faciliùs penetret, quod ad cuneum reducemus
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              alibi: idem dico de ſecuri, gladio, enſe, &c. </s>
              <s id="N28C33">Tertiò, initio faciliùs
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              defigitur, conſtat experientiâ; ratio eſt, quia plures partes deinde com­
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              primuntur propter longitudinem, & craſſitudinem pali ſeu claui. </s>
              <s id="N28C3B">Quar­
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              tò, hinc minùs defigitur ſecundo ictu, quàm primo; </s>
              <s id="N28C41">igitur maiore niſu
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              opus eſt: </s>
              <s id="N28C47">in qua verò proportione difficilè dictu eſt; inueniri tamen po­
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              teſt de qua numero ſequenti. </s>
              <s id="N28C4D">Quintò, poteſt etiam dici vel poſito ſe­
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              cundô ictu æquali primo quantum defigat ſupra primum, vel poſita de­
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              fixione illa, qua defigitur ſecundo ictu æquali primæ, quam proportio­
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              nem habeant ictus. </s>
              <s id="N28C56">Tertiò, poſito vtroque inæquali, quæ ſit etiam vtriuſ­
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              que proportio. </s>
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