Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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by
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Copernicus.
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Which arguments, as being of ſomewhat a
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rent nature, may be produced, after we have examined the
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ſtrength of theſe already propounded.</
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An argument
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taken from the
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Clouds, and from
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Birds.
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An argument
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taken from the air
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which we feel to
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beat upon us when
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we run a Horſe at
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full ſpeed.
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An argument
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taken from the
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whirling of
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lar motion, which
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hath a faculty to
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extrude and
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pate.
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>SAGR. </
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>What ſay you
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Simplicius
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? </
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Salviatus
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is Maſter of, and knoweth how to unfold the
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Ptolomean
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and
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ſtotelian
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arguments? </
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>Or do you think that any
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Peripatetick
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is
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qually verſt in the
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Copernican
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demonſtrations?</
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>SIMPL. </
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>Were it not for the high eſteem, that the paſt
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ſes have begot in me of the learning of
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Salviatus,
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and of the
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cuteneſſe of
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Sagredus,
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I would by their good leave have gone my
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way without ſtaying for their anſwers; it ſeeming to me a thing
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impoſſible, that ſo palpable experiments ſhould be contradicted;
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and would, without hearing them farther, conſirm my ſelf in my
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old perſwaſion; for though I ſhould be made to ſee that it was
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roneous, its being upheld by ſo many probable reaſons, would
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der it excuſeable. </
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>And if theſe are fallacies, what true
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tions were ever ſo fair?</
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>SAGR. </
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>Yet its good that we hear the reſponſions of
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Salviatus
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;
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which if they be true, muſt of neceſſity be more fair, and that by
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inſinite degrees; and thoſe muſt be deformed, yea moſt deformed,
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if the Metaphy ſical Axiome hold, That true and fair are one and
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the ſame thing; as alſo falſe and deformed. </
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>Therefore
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Salviatus
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let's no longer loſe time.</
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True and fair
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are one and the
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ſame, as alſo falſe
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and deformed.
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>SALV. </
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>The firſt Argument alledged by
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Simplicius,
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if I well
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member it, was this. </
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>The Earth cannot move circularly, becauſe
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ſuch motion would be violent to the ſame, and therefore not
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petual: that it is violent, the reaſon was: Becauſe, that had it been
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natural, its parts would likewiſe naturally move round, which is
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impoſſible, for that it is natural for the parts thereof to move with a
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right motion downwards. </
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>To this my reply is, that I could
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ly wiſh, that
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Ariſtotle
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had more cleerly expreſt himſelf, where he
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ſaid; That its parts would likewiſe move circularly; for this
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ving circularly is to be underſtood two wayes, one is, that every
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particle or atome ſeparated from its
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Whole
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would move circularly
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about its particular centre, deſcribing its ſmall Circulets; the other
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is, that the whole Globe moving about its centre in twenty four
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hours, the parts alſo would turn about the ſame centre in four and
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twenty hours. </
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>The firſt would be no leſſe an impertinency, than
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if one ſhould ſay, that every part of the circumference of a Circle
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ought to be a Circle; or becauſe that the Earth is Spherical, that
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therefore every part thereof be a Globe, for ſo doth the
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Axiome
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require:
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Eadem eſt ratio totius, & partium.
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But if he took it in
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the other ſenſe, to wit, that the parts in imitation of the
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Whole
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ſhould move naturally round the Centre of the whole Globe in
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twenty four hours, I ſay, that they do ſo; and it concerns you, </
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