Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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the angle towards the circumference ſomething acute. </
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<
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>But wholly
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to free this Authour from theſe unhappy lies, let him know, (in
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gard it appears that he is not very skilful in the uſe of
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call Inſtruments) that in the ſides of the Sextant or Quadrant
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there are placed two ^{*} Sights, one in the centre, and the other at
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the other at the oppoſite end, which are raiſed an inch or more
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bove the plane of the Rule; and through the tops of thoſe ſights
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the ray of the eye is made to paſſe, which eye likewiſe is held an
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hands breadth or two, or it may be more, from the Inſtrument; ſo
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that neither the pupil, nor any bone of the cheek, nor of the whole
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body toucheth or ſtayeth it ſelf upon the Inſtrument, nor much
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leſſe is the Inſtrument upheld or mounted in the armes, eſpecially
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if it be one of thoſe great ones, as is uſual, which weighing tens,
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hundreds, and alſo thouſands of pounds, are placed upon very
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ſtrong feet or frames: ſo that the whole objection vaniſheth.
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>Theſe are the ſubterfuges of this Authour, which, though they were
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all of ſteel, would not ſecure him the hundredth part of a minute;
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and with theſe he conceits to make us believe, that he hath
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penſated that difference, which importeth more than an hundred
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minutes; I mean, that of the not obſerving a notable difference
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in the diſtances between one of the fixed ſtars, and the new ſtar in
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in any of their circulations; which, had it been neer to the Moon,
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it ought to have been very conſpicuous to the meer ſight, without
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any Inſtrument, eſpecially comparing it with the eleventh of
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ſiopeia,
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its neighbour, within 1
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gr. </
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<
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which ought to have
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ried from it more than two diameters of the moon, as the more
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intelligent Aſtronomers of t' oſe times do well note.</
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* Traguardi.</
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>SAGR. </
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>Methinks I ſee that unfortunate Husbandman, who
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ter all his expected crops, have been beaten down and deſtroyed by
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a ſtorm, goeth up and down with a languiſhing and down-caſt
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look, gleaning up every ſmall ear that would not ſuffice to keep a
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chicken alive one ſole day.</
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>SALV. Truly, this Authour came out too ſlenderly provided
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with armes againſt the aſſailants of the Heavens inalterability, and
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with too brittle a chain attempted to pull down the new ſtar of
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Caſſiopeia
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from the higheſt Regions, to theſe ſo low and
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ry. </
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>And for that I think that we have ſufficiently demonſtrated
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the vaſt difference that is between the arguments of thoſe
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nomers, and of this their Antagoniſt, it will be convenient that we
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leave this particular, and return to our principal matter; in which
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there preſents it ſelf to our conſideration the annual motion
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monly aſcribed to the Sun, but by
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Aristarchus Samius
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firſt of all,
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and after by
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Copernicus
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taken from the Sun, and transferred upon
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the Earth; againſt which Hypotheſis, methinks I ſee
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Simplicius
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to
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come ſtrongly provided, and particularly with the ſword and </
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