Wilkins, John, A discovery of a new world : or a discourse tending to prove, that 'tis probable there may be another Habitable World in the Moon ; with a discourse concerning the Probability of a Passage thither; unto which is added, a discourse concerning a New Planet, tending to prove, that 'tis probable our earth is one of the Planets

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6351That the Moon may be a World. Waters afar off, miſtook them for Blood. Et
cauſa
hujus eſt quia radius ſolaris in Aurora con-
112 Queſt. in
hoc
cap.
traiht quondam rubedinem, propter vapores cam-
buſtos
manentes circa ſuperficiem terrœ, per quos
raàii
tranſeunt, &
ideo cum repercutiantur in
aqua
ad oculos noſtros, trahunt ſecum eundem rubo-
borem
, &
faciunt apparere locum aquarum, in quo
eſt
repercuſſio, eſſe rubrum, ſaith Toſtatus.
The
Reaſon
is, becauſe of his Rays, which being
in
the lower Vapours, thoſe do convey an im-
perfect
mixed Light upon the Waters.
Thus
the
Moon being in the Earth's Shadow, and
the
Sun Beams which are round about it, not
being
able to come directly unto her Body, yet
ſome
ſecond Rays there are, which paſſing
through
the ſhadow, make her appear in that
ruddy
colour:
So that ſhe muſt appear bright-
eſt
when ſhe is Eclipſed, being in her Apoge,
or
greateſt diſtance from us, becauſe then the
cone
of the Earths ſhadow is leſs, and the
Refraction
is made through a narrower
Medium
.
So on the contrary, ſhe muſt be
repreſented
under a more Dark and Obſcure
form
when ſhe is Eclipſed, being in her Peri-
ge
or neareſt to the Earth, becauſe then ſhe is
Involv
'd in a greater ſhadow, or bigger part
of
the cone, and ſo the Refraction paſſing
through
a greater Medium, the Light muſt
needs
be Weaker which doth proceed from it.
If you ask now, what the Reaſon may be of
that
Light which we Diſcern in the Darker
part
of the New Moon?
I anſwer, ’tis Re-
flected
from our Earth, which returns as great
a
Brightneſs to that Planet, as it receives from
it
.
This I ſhall have occaſion to Prove after-
ward
.

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