Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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the Aire which partaketh of that motion to diſtend ſo low as to
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the Tops of the higheſt Hills, and that likewiſe they would reach
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to the Earth, if thoſe Mountains did not impede them, which
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agreeth with what you ſay: For as you affirm, the Air, which is
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invironed by ledges of Mountains, to be carried about by the
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aſperity of the moveable Earth; we on the contrary ſay, That
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the whole Element of Air is carried about by the motion of
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Heaven, that part only excepted which lyeth below thoſe bodies,
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which is hindred by the aſperity of the immoveable Earth. </
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<
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>And
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whereas you ſaid, That in caſe that aſperity ſhould be removed,
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the Air would alſo ceaſe to be whirld about; we may ſay,
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That the ſaid aſperity being removed, the whole Aire would
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tinue its motion. </
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>Whereupon, becauſe the ſurfaces of ſpacious
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Seas are ſmooth, and even; the Airs motion ſhall continue upon
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thoſe, alwaies blowing from the Eaſt: And this is more ſenſibly
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perceived in Climates lying under the Line, and within the
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picks, where the motion of Heaven is ſwifter; and like as that
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Celeſtial motion is able to bear before it all the Air that is at
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liberty, ſo we may very rationally affirm that it contributeth the
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ſame motion to the Water moveable, as being fluid and not
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nected to the immobility of the Earth: And with ſo much the
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more confidence may we affirm the ſame, in that by your
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feſſion, that motion ought to be very ſmall in reſect of the efficient
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Cauſe; which begirting in a natural day the whole Terreſtrial
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Globe, paſſeth many hundreds of miles an hour, and eſpecially
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towards the Equinoctial; whereas in the currents of the open Sea,
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it moveth but very few miles an hour. </
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<
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>And thus the voiages
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wards the Weſt ſhall come to be commodious and expeditious,
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not onely by reaſon of the perpetual Eaſtern Gale, but of the
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courſe alſo of the Waters; from which courſe alſo perhaps the
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Ebbing and Flowing may come, by reaſon of the different
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ation of the Terreſtrial Shores: againſt which the Water coming
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to beat, may alſo return backwards with a contrary motion, like
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as experience ſheweth us in the courſe of Rivers; for according as
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the Water in the unevenneſs of the Banks, meeteth with ſome
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parts that ſtand out, or make with their Meanders ſome Reach or
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Bay, here the Water turneth again, and is ſeen to retreat back
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a conſiderable ſpace. </
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<
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>Upon this I hold, That of thoſe effects
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from which you argue the Earths mobility, and alledge it as a
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cauſe of them, there may be aſſigned a cauſe ſufficiently valid,
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retaining the Earth ſtedfaſt, and reſtoring the mobility of
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Heaven.</
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It is
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ted inverting the
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argument, that
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the perpetual
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tion of the Air
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from Eaſt to Weſt
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cometh from the
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motion of Heaven?
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It is demonſtrated
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inverting the
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gument, that the
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perpetual motion of
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the Air from Eaſt
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to Weſt, cometh
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from the motion of
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Heaven.
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The motion of the
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Water dependeth
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on the motion of
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Heaven.
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The flux and
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flux may depend
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on the diurual
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tion of Heaven.
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<
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>SALV. </
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>It cannot be denied, but that your diſcourſe is ingenious,
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& hath much of probability, I mean probability in appearance, but
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not in reality & exiſtence: It conſiſteth of two parts: In the firſt it </
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