Galilei, Galileo, The systems of the world, 1661

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="065/01/089.jpg" pagenum="83"/>
              that a ſilver plate boiled, being toucht with the Burniſher,
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              cometh of white obſcure; that the moiſt part of the Earth ſhews
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              more obſcure than the dry; that in the tops of Hills, the woody
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              parts appear more gloomy than the naked and barren; which
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              hapneth becauſe there falleth very much ſhadow among the Trees,
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              but the open places are illuminated all over by the Sun. </s>
              <s>And this
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              mixtion of ſhadow hath ſuch operation, that in tuſted velvet, the
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              ſilk which is cut, is of a far darker colour than that which is not
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              cut, by means of the ſhadows diffuſed betwixt thred and thred,
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              and a plain velvet ſhews much blacker than a Taffata, made of the
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              ſame ſilk. </s>
              <s>So that if there were in the Moon things which ſhould
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              look like great Woods, their aſpect might repreſent unto us the
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              ſpots which we diſcover; alike difference would be occaſioned, if
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              there were Seas in her: and laſtly, nothing hindreth, but that thoſe
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              ſpots may really be of an obſcurer colour than the reſt; for thus
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              the ſnow makes the mountains ſhew brighter. </s>
              <s>That which is
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                <arrow.to.target n="marg210"/>
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              ly obſerved in the Moon is, that its moſt obſcure parts are all
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              plains, with few riſes and bancks in them; though ſome there be;
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              the reſt which is of a brighter colour, is all full of rocks,
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              tains, hillocks of ſpherical and other figures; and in particular, round
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              about the ſpots are very great ledges of mountains. </s>
              <s>That the
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                <arrow.to.target n="marg211"/>
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              ſpots be plain ſuperficies, we have aſſuredproof, in that we ſee,
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              how that the term which diſtinguiſheth the part illuminated from
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              the obſcure, in croſſing the ſpots makes the interſection even, but
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              in the clear parts it ſhews all craggy and ſhagged. </s>
              <s>But I know not
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              as yet whether this evenneſſe of ſuperficies may be ſufficient of it
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              ſelf alone, to make the obſcurity appear, and I rather think not.
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              </s>
              <s>Beſides, I account the Moon exceeding different from the Earth;
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              for although I imagine to my ſelf that thoſe are not idle and dead
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              Regions, yet I affirm not, that there are in them motion and life,
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                <arrow.to.target n="marg212"/>
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              much leſs that there are bred plants, animals or other things like
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              to ours; but, if ſuch there be, they ſhould nevertheleſs be very
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              different, and remote from our imagination. </s>
              <s>And I am induced ſo
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              to think, becauſe in the firſt place, I eſteem that the matter of the
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              Lunar Globe conſiſts not of Earth and Water; and this alone
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              ſufficeth to take away the generations and alterations reſembling
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              ours: but now ſuppoſing that there were in the Moon, Water and
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                <arrow.to.target n="marg213"/>
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              Earth, yet would they not produce plants and animals like to
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              ours; and this for two principal reaſons: The firſt is, that unto our
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                <arrow.to.target n="marg214"/>
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              productions there are required ſo many variable aſpects of the Sun,
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              that without them they would all miſcarry: now the habitudes of
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              the Sun towards the Earth are far different from thoſe towards
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              the Moon. </s>
              <s>We as to the diurnal illumination, have, in the greater
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              part of the Earth, every twenty four hours part day, and part
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              night, which effect in the Moon is monethly: and that annual </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>