Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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<
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>SALV. </
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<
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>See
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Simplicius
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what an inveterate affection and
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ted opinion can do, ſince it is ſo powerful, that it makes you think
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that thoſe very things favour you, which you produce againſt
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your ſelf. </
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<
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>For if ſeparation and diſtance are accidents ſufficient to
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perſwade with you a great diverſity of natures, it mnſt follow that
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proximity and contiguity import ſimilitude. </
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<
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>Now how much more
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neerer is the Moon to the Earth, than to any other of the Cœleſtial
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Orbs? </
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<
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>You muſt acknowledg therefore, according to your own
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ceſſion (and you ſhall have other Philoſophers bear you company)
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that there is a very great affinity betwixt the Earth and Moon.
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</
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<
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>Now let us proceed, and ſee whether any thing remains to be
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ſidered, touching thoſe objections which you made againſt the
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ſemblances that are between theſe two bodies.</
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Affinity between
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he Earth & Moon
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in reſpect of their
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vicinity.
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>SIMPL. </
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>It reſts, that we ſay ſomething touching the ſolidity of
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the Moon, which I argued from its being exquiſite ſmooth and
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polite, and you from its montuoſity. </
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>There is another ſcruple
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ſo comes into my mind, from an opinion which I have, that the
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Seas reflection ought by the equality of its ſurface, to be rendered
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ſtronger than that of the Earth, whoſe ſuperficies is ſo rough and
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opacous.</
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>SALV. </
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<
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>As to the firſt objection; I ſay, that like as among the
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parts of the Earth, which all by their gravity ſtrive to approach the
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neareſt they can poſſible to the center, ſome of them alwayes are
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more remote from it than the reſt, as the mountains more than
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the valleys, and that by reaſon of their ſolidity and firmneſſe
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(for if they were of fluid, they would be even) ſo the ſeeing ſome
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parts of the Moon to be elevated above the ſphericity of the
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er parts, argueth their hardneſſe; for it is probable that the
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ter of the Moon is reduced into a ſpherical form by the
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ous conſpiration of all its parts to the ſame ſentenſe. </
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<
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>Touching
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the ſecond doubt, my thinks that the particulars already obſerved
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to happen in the Looking-glaſſes, may very well aſſure us, that the
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reflection of light comming from the Sea, is far weaker than that
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which cometh from Land; underſtanding it alwayes of the
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univerſal reflection; for as to that particular, on which the
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ter being calm, caſteth upon a determinate place, there is no
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doubt, but that he who ſhall ſtand in that place, ſhall ſee a very
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great reflection in the water, but every way elſe he ſhall ſee the
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ſurface of the Water more obſcure than that of the Land; and to
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prove it to your ſenſes, let us go into yonder Hall, and power
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forth a little water upon the Pavement. </
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<
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>Tell me now, doth not
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this wet brick ſhew more dull than the other dry ones? </
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leſſe it doth, and will ſo appear, from what place ſoever you
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hold it, except one onely, and this is that way which the light
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cometh, that entereth in at yonder window; go backwards
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therefore by a little and a little.</
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