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

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              ſtence before the common centre of gravity: ſo that it is not one </s>
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              centre alone, which is no other than indiviſible point, and therefore
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              of no efficacie, that can attract unto it grave matters; but that thoſe
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              matters conſpiring naturally to unite, form to themſelves a
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              mon centre, which is that about which parts of equal moment
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              conſiſt: ſo that I hold, that if the great aggregate of grave
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              dies were gathered all into any one place, the ſmall parts that were
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              ſeparated from their whole, would follow the ſame, and if they
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              were not hindered, would penetrate wherever they ſhould find
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              parts leſs grave than themſelves: but coming where they ſhould
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              meet with matters more grave, they would deſcend no farther.
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              <s>And therefore I hold, that in the Cave full of air, the whole Vault
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              would preſs, and violently reſt it ſelf onely upon that air, in caſe
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              its hardneſs could not be overcome and broken by its gravity; but
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              looſe ſtones, I believe, would deſcend to the centre, and not ſwim
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              above in the air: nor may it be ſaid, that they move not to their
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              whole, though they move whither all the parts of the whole
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              would transfer themſelves, if all impediments were removed.</s>
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              Things grave are
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              before the centre of
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              gravity.
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              The great maſs
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              of grave bodies
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              ing transferred out
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              of their place, the
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              ſeparated parts
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              would follow that
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              maß.
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              <s>SIMP. </s>
              <s>That which remaineth, is a certain Errour which he
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              ſerveth in a Diſciple of
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              Copernicus,
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              who making the Earth to
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              move with an annual motion, and a diurnal, in the ſame manner
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              as the Cart-wheel moveth upon the circle of the Earth, and in it
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              ſelf, did conſtitute the Terreſtrial Globe too great, or the great
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              Orb too little; for that 365 revolutions of the Æquinoctial, are
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              leſs by far than the circumference of the great Orb.</s>
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              <s>SALV. </s>
              <s>Take notice that you miſtake, and tell us the direct
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              contrary to what muſt needs be written in that Book; for you
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              ſhould ſay, that that ſame
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              Copernican
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              Author did conſtitute the
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              Terreſtrial Globe too little, and the great Orb too big; and not
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              the Terreſtrial Globe too big, and the annual too little.</s>
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              <s>SIMP. </s>
              <s>The miſtake is not mine; ſee here the words of the
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              Book.
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              Non videt, quòd vel circulum annuum æquo minorem, vel
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              orbem terreum juſto multò fabricet majorem.
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              (In Engliſh thus:)
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              He ſeeth not, that he either maketh the annual circle equal to the
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              leſs, or the Terreſtrial Orb much too big.</s>
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              <s>SALV. </s>
              <s>I cannot tell whether the firſt Author erred or no, ſince
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              the Author of this Tractate doth not name him; but the error of
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              this Book is certain and unpardonable, whether that follower of
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                <emph type="italics"/>
              Copernicus
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              erred or not erred; for that your Author paſſeth by ſo
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              material an error, without either detecting or correcting it. </s>
              <s>But
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              let him be forgiven this fault, as an error rather of inadvertencie,
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              than of any thing elſe: Farthermore, were it not, that I am
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              ready wearied and tired with talking and ſpending ſo mnch time
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              with very little profit, in theſe frivolous janglings and
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              tions, I could ſhew, that it is not impoſſible for a circle, though </s>
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