Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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without encompaſſing the Earth; about the ſame Sun you make
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the three ſuperiour Planets
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Mars, Jupiter,
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and
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Saturn,
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to move,
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comprehending the Earth within their circles. </
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<
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>The Moon in the
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next place can move in no other manner than about the Earth,
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without taking in the Sun, and in all theſe motions you agree alſo
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with the ſame
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Copernicus.
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There remains now three things to be
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decided between the Sun, the Earth, and fixed ſtars, namely,
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Reſt, which ſeemeth to belong to the Earth; the annual motion
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under the Zodiack, which appeareth to pertain to the Sun; and the
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diurnal motion, which ſeems to belong to the Starry Sphere, and
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to be by that imparted to all the reſt of the Univerſe, the Earth
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excepted, And it being true that all the Orbs of the Planets, I
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mean of
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Mercury, Venus, Mars, Jupiter,
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and
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Saturn,
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do move
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about the Sun as their centre; reſt ſeemeth with ſo much more
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reaſon to belong to the ſaid Sun, than to the Earth, in as much
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as in a moveable Sphere, it is more reaſonable that the centre
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ſtand ſtill, than any other place remote from the ſaid centre; to
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the Earth therefore, which is conſtituted in the midſt of
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able parts of the Univerſe, I mean between
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Venus
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and
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Mars,
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one
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of which maketh its revolution in nine moneths, and the other in
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two years, may the motion of a year very commodiouſly be
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ſigned, leaving reſt to the Sun. </
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>And if that be ſo, it followeth
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of neceſſary conſequence, that likewiſe the diurnal motion
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longeth to the Earth; for, if the Sun ſtanding ſtill, the Earth
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ſhould not revolve about its ſelf, but have onely the annual
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tion about the Sun, our year would be no other than one day and
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one night, that is ſix moneths of day, and ſix moneths of night,
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as hath already been ſaid. </
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<
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>You may conſider withal how
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diouſly the precipitate motion of 24 hours is taken away from
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the Univerſe, and the fixed ſtars that are ſo many Suns, are made
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in conformity to our Sun to enjoy a perpetual reſt. </
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<
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>You ſee
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over what facility one meets with in this rough draught to render
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the reaſon of ſo great appearances in the Celeſtial bodies.</
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Reſt, the annual
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motion and the
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urnal ought to be
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diſtributed
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twixt the Sun,
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Earth, and
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mament.
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In a moveable
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ſphere, it ſeemeth
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more veaſonable
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that its centre be
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ſtable, than any
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ther of its parts.
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Granting to the
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Earth the annual,
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it muſt of neceſſity
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alſo have the
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nal motion
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ed to it.
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<
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>SAGR. </
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>I very well perceive that facility, but as you from this
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ſimplicity collect great probabilities for the truth of that Syſtem,
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others haply could make thence contrary deductions; doubting,
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not without reaſon, why that ſame being the ancient Syſteme of
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Pythagoreans,
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and ſo well accommodated to the
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Phænomena,
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hath in the ſucceſſion of ſo many thouſand years had ſo few
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lowers, and hath been even by
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Ariſtotle
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himſelf refuted, and
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ſince that
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Copernicus
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himſelf hath had no better fortune.</
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<
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>SALV. </
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>If you had at any time been aſſaulted, as I have been,
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many and many a time, with the relation of ſuch kind of frivolous
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reaſons, as ſerve to make the vulgar contumacious, and difficult to
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be perſwaded to hearken, (I will not ſay to conſent) to this </
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