Salusbury, Thomas, Mathematical collections and translations (Tome I), 1667

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                <pb xlink:href="040/01/227.jpg" pagenum="209"/>
              and concrete: therefore let
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              Simplicius
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              plead in excuſe of this
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              Author; and whether he chinks that the Phyſicks can differ ſo
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              very much from the Mathematicks.</s>
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              <s>SIMP. </s>
              <s>The ſubſtractions are in my opinion inſufficient to ſalve
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              this difference, which is ſo extreamly too great to be reconciled:
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              and in this caſe I have no more to ſay but that,
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              Quandoque bonus
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              dormitet Homerus.
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              But ſuppoſing the calculation of ^{*}
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              Salviatus
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                <arrow.to.target n="marg414"/>
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              to be more exact, and that the time of the deſcent of the ball
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              were no more than three hours; yet me thinks, that coming from
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              the concave of the Moon, which is ſo great a diſtance off, it would
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              be an admirable thing, that it ſhould have an inſtinct of
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              ing it ſelf all the way over the ſelf-ſame point of the Earth, over
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              which it did hang in its departure thence and not rather be left a
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              very great way behind.</s>
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              <s>
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              * Not
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              dus,
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              as the Latine
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              ha hit.</s>
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              <s>SALV. </s>
              <s>The effect may be admirable, and not admirable, but
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              natural and ordinary, according as the things precedent may fall
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              out. </s>
              <s>For if the ball (according to the Authors ſuppoſitions)
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              whilſt it ſtaid in the concave of the Moon, had the circular motion
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              of twenty four hours together with the Earth, and with the reſt of
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              the things contained within the ſaid Concave; that very vertue
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              which made it turn round before its deſcent, will continue it in
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              the ſame motion in its deſcending. </s>
              <s>And ſo far it is from not
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              ing pace with the motion of the Earth, and from ſtaying behind,
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              that it is more likely to out-go it; being that in its approaches to
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              the Earth, the motion of gyration is to be made with circles
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              tinually leſſer and leſſer; ſo that the ball retaining in it ſelf that
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              ſelf-ſame velocity which it had in the concave, it ought to
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              pate, as I have ſaid, the
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              vertigo
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              or converſion of the Earth. </s>
              <s>But
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              if the ball in the concave did want that circulation, it is not
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              ged in deſcending to maintain it ſelf perpendicularly over that
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              point of the Earth, which was juſt under it when the deſcent
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              gan. </s>
              <s>Nor will
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              Copernicus,
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              or any of his followers affirm the
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              ſame.</s>
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              <s>SIMP. </s>
              <s>But the Author maketh an objection, as you ſee,
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              manding on what principle this circular motion of grave and light
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              bodies, doth depend: that is, whether upon an internal or an
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              ternal principle.</s>
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              <s>SALV. </s>
              <s>Keeping to the Probleme of which we ſpeak, I ſay,
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              that that very principle which made the ball turn round, whil'ſt it
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              was in the Lunar concave, is the ſame that maintaineth alſo the
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              circulation in the deſcent: yet I leave the Author at liberty to
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              make it internal or external at his pleaſure.</s>
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              <s>SIMP. </s>
              <s>The Author proveth, that it can neither be inward nor
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              outward.</s>
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            <p type="main">
              <s>SALV. </s>
              <s>And I will ſay then, that the ball in the concave did </s>
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          </chap>
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