Galilei, Galileo, The systems of the world, 1661

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1
SALV. That moiſture hath done no more but filled thoſe little
cavities
which are in the brick with water, and reduced its
ficies
to an exact eveneſſe; whereupon the reflex rayes iſſue
unitedly
towards one and the ſame place; but the reſt of the
pavement
which is dry, hath its protuberances, that is, an
merable
variety of inclinations in its ſmalleſt particles;
on
the reflections of the light ſcatter towards all parts, but more
weakly
than if they had gone all united together; and therefore,
the
ſame ſheweth almoſt all alike, beheld ſeveral wayes, but far
leſſe
clear than the moiſtned brick.
I conclude therefore, that the
ſurface
of the Sea, beheld from the Moon, in like manner, as it
would
appear moſt equal, (the Iſlands and Rocks deducted) ſo it
would
ſhew leſſe clear than that of the Earth, which is montanous
and
uneven.
And but that I would not ſeem, as the ſaying is,
to
harp too much on one ſtring, I could tell you that I have
ſerved
in the Moon that ſecondary light which I told you came to
her
from the reflection of the Terreſtrial Globe, to be notably

more
clear two or three dayes before the conjunction, than after,
that
is, when we ſee it before break of day in the Eaſt, than
when
it is ſeen at night after Sun-ſet in the Weſt; of which
ference
the cauſe is, that the Terreſtrial Hemiſphere, which looks
towards
the Eaſtern Moon, hath little Sea, and much Land, to
wit
, all Aſia, whereas, when it is in the Weſt, it beholds very
great
Seas, that is, the whole Atlantick Ocean as far as America:
An
Argument ſufficiently probable that the ſurface of the water
appears
leſſe ſplendid than that of the Earth.

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