Galilei, Galileo
,
The systems of the world
,
1661
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065/01/205.jpg
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pagenum
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197
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<
s
>SALV. </
s
>
<
s
>It is not enough,
<
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="
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Sagredus,
<
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"/>
that the ſubjects be noble
<
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and great, but the buſineſſe conſiſts in handling it nobly. </
s
>
<
s
>And
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who knoweth not, that in the diſſection of the members of
<
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a beaſt, there may be diſcovered infinite wonders of provident
<
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and prudent Nature; and yet for one, that the Anatomiſt
<
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ſects, the butcher cuts up a thouſand. </
s
>
<
s
>Thus I, who am now
<
lb
/>
ſeeking how to ſatisfie your demand, cannot tell with which of the
<
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two ſhapes I had beſt to appear on the Stage; but yet, taking
<
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heart from the example of
<
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type
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Simplicius,
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his Authour, I will,
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out more delays, give you an account (if I have not forgot) how
<
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I proceeded. </
s
>
<
s
>But before I go any further, I muſt not omit to tell
<
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you, that I much fear that
<
emph
type
="
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"/>
Simplicius
<
emph.end
type
="
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hath not faithfully related
<
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the manner how this his Authour found, that the Cannon
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let in coming from the concave of the Moon to the centre of the
<
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Earth, would ſpend more than fix dayes: for if he had
<
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ſed that its velocity in deſcending was equal to that of the
<
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concave (as
<
emph
type
="
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"/>
Simplicius
<
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ſaith he doth ſuppoſe) he would have
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ſhewn himſelf ignorant of the firſt, and more ſimple principles
<
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of
<
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type
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"/>
Geometry
<
emph.end
type
="
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"/>
; yea, I admire that
<
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type
="
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"/>
Simplicius,
<
emph.end
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in admitting the
<
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ſuppoſition which he ſpeaketh of, doth not ſee the monſtrous
<
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ſurdity that is couched in it.</
s
>
</
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>
<
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<
s
>SIMP. </
s
>
<
s
>Its poſſible that I may have erred in relating it; but
<
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that I ſee any fallacy in it, I am ſure is not true.</
s
>
</
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>
<
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type
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<
s
>SALV. </
s
>
<
s
>Perhaps I did not rightly apprehend that which you
<
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/>
ſaid, Do you not ſay, that this Authour maketh the velocity
<
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of the bullet in deſcending equall to that which it had in
<
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ning round, being in the concave of the Moon, and that
<
lb
/>
ming down with the ſame velocity, it would reach to the centre
<
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in ſix dayes?</
s
>
</
p
>
<
p
type
="
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">
<
s
>SIMP. So, as I think, he writeth.</
s
>
</
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>
<
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type
="
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">
<
s
>SALV. </
s
>
<
s
>And do not you perceive a ſhamefull errour therein?
<
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</
s
>
<
s
>But queſtionleſſe you diſſemble it: For it cannot be, but that
<
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/>
you ſhould know that the ſemidiameter of the Circle is leſſe than
<
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<
arrow.to.target
n
="
marg393
"/>
<
lb
/>
the ſixth part of the circumference; and that conſequently, the
<
lb
/>
time in which the moveable ſhall paſſe the ſemidiameter, ſhall be
<
lb
/>
leſſe than the ſixth part of the time; in which, being moved
<
lb
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with the ſame velocity, it would paſſe the circumference; and
<
lb
/>
that therefore the bullet deſcending with the velocity,
<
lb
/>
with it moved in the concave, will arrive in leſſe than four hours
<
lb
/>
at the centre, ſuppoſing that in the concave one revolution
<
lb
/>
ſhould be conſummate in twenty four hours, as he muſt of
<
lb
/>
ceſſity have ſuppoſed it, for to keep it all the way in the ſame
<
lb
/>
vertical line.</
s
>
</
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>
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">
<
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>
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<
emph
type
="
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"/>
A ſhamefull
<
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/>
errour in the
<
lb
/>
gument taken from
<
lb
/>
the bullets falling
<
lb
/>
out of the Moons
<
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/>
concave.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
type
="
main
">
<
s
>SIMP. </
s
>
<
s
>Now I thorowly perceive the miſtake: but yet I
<
lb
/>
would not lay it upon him undeſervedly, for it's poſſible that I </
s
>
</
p
>
</
chap
>
</
body
>
</
text
>
</
archimedes
>