Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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tion given us by
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Salviatus
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; yet do I not find that my Logick, </
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whilſt I have a regard to form, teacheth me, that that kind of
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gumentation affords me any neceſſary reaſon to conclude in
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vour of the
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Copernican
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Hypotheſis, that is, of the ſtability of
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the Sun in the centre of the Zodiack, and of the mobility of
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the Earth under its circumference. </
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>For although it be true, that
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the ſaid converſion of the Sun, and cirnition of the Earth being
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granted, there be a neceſſity of diſcerning ſuch and ſuch ſtrange
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extravagancies as theſe in the ſpots of the Sun, yet doth it not
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follow that arguing
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per converſum,
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from finding ſuch like
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uſual accidents in the Sun, one muſt of necſſity conclude the
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Earth to move by the circumference, and the Sun to be placed
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in the centre of the Zodiack. </
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>For who ſhall aſſertain me that the
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like irregularities may not as well be viſible in the Sun, it being
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moveable by the Ecliptick, to the inhabitants of the Earth, it
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being alſo immoveable in the centre of the ſame? </
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<
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>Unleſſe you
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demonſtrate to me, that there can be no reaſon given for that
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pearance, when the Sun is made moveable, and the Earth ſtable,
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I will not alter my opinion and belief that the Sun moveth, and
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the Earth ſtandeth ſtill.</
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Though the
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nual motion
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ed to the Earth
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ſwerth to the
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nomena
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of the
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lar ſpots, yet doth
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it not follow by
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verſion that from
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the
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Phænomena
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of
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the ſpots one may
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infor the annual
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motion to belong to
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the Earth.
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>SAGR.
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Simplicius
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behaveth himſelf very bravely, and argueth
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very ſubtilly in defence of the cauſe of
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Ariſtotle
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and
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Ptolomy
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;
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and if I may ſpeak the truth, mythinks that the converſation of
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Salviatus,
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though it have been but of ſmall continuance, hath
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much farthered him in diſcourſing ſilogiſtically. </
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>An effect which
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I know to be wrought in others as well as him. </
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>But as to finding
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and judging whether competent reaſon may be rendered of the
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apparent exorbitancies and irregularities in the motions of the
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ſpots, ſuppoſing the Earth to be immoveable, and the Sun
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moveable, I ſhall expect that
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Salviatus
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manifeſt his opinion to
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us, for it is very probable that he he hath conſidered of the
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ſame, and collected together whatever may be ſaid upon the
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point.</
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<
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>SALV. </
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<
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>I have often thought thereon, and alſo diſcourſed
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thereof with my Friend and Gueſt afore-named; and touching
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what is to be produced by Philoſophers and Aſtronomers, in
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fence of the ancient Syſteme, we are on one hand certain,
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tain I ſay, that the true and pure
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Peripateticks
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laughing at ſuch
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as employ themſelves in ſuch, to their thinking, inſipid
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ries, will cenſure all theſe
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Phænomena
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to be vain illuſions of the
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Chriſtals; and in this manner will with little trouble free
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ſelves from the obligation of ſtudying any more upon the ſame.
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<
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>Again, as to the Aſtronomical Philoſophers, after we have with
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ſome diligence weighed that which may be alledged as a mean
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between thoſe two others, we have not been able to find out an </
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