Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
Text
Text Image
Image
XML
Thumbnail overview
Document information
None
Concordance
Figures
Thumbnails
page
|<
<
of 701
>
>|
<
archimedes
>
<
text
>
<
body
>
<
chap
>
<
p
type
="
main
">
<
s
>
<
pb
xlink:href
="
040/01/125.jpg
"
pagenum
="
107
"/>
gin to produce thoſe difficulties that ſeem in his opinion, to thwart
<
lb
/>
this new diſpoſition of the World.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>SIMPL. </
s
>
<
s
>That diſpoſition is not new, but very old, and that
<
lb
/>
you may ſee it is ſo,
<
emph
type
="
italics
"/>
Ariſtotle
<
emph.end
type
="
italics
"/>
confuteth it; and his confutations
<
lb
/>
are theſe: “Firſt if the Earth moveth either in it felf about its
<
lb
/>
<
arrow.to.target
n
="
marg275
"/>
<
lb
/>
own Centre, or in an Excentrick Circle, it is neceſſary that that
<
lb
/>
ſame motion be violent; for it is not its natural motion, for
<
lb
/>
if it were, each of its parts would partake thereof; but each
<
lb
/>
of them moveth in a right line towards its Centre. </
s
>
<
s
>It being
<
lb
/>
therefore violent and pteternatural, it could never be
<
lb
/>
al: But the order of the World is perpetual. </
s
>
<
s
>Therefore,
<
emph
type
="
italics
"/>
&c.
<
emph.end
type
="
italics
"/>
<
lb
/>
Secondly, all the other moveables that move circularly, ſeem
<
lb
/>
to ^{*} ſtay behind, and to move with more than one motion, the
<
lb
/>
<
arrow.to.target
n
="
marg276
"/>
<
lb
/>
<
emph
type
="
italics
"/>
Primum Mobile
<
emph.end
type
="
italics
"/>
excepted: Whence it would be neceſſary that
<
lb
/>
the Earth alſo do move with two motions; and if that ſhould
<
lb
/>
be ſo, it would inevitably follow, that mutations ſhould be
<
lb
/>
made in the Fixed Stars, the which none do perceive; nay
<
lb
/>
without any variation, the ſame Stars alwayes riſe from towards
<
lb
/>
the ſame places, and in the ſame places do ſet. </
s
>
<
s
>Thirdly, the
<
lb
/>
tion of the parts is the ſame with that of the whole, and
<
lb
/>
ly tendeth towards the Centre of the Univerſe; and for the ſame
<
lb
/>
cauſe reſt, being arrived thither. </
s
>
<
s
>He thereupon moves the
<
lb
/>
ſtion whether the motion of the parts hath a tendency to the
<
lb
/>
centre of the Univerſe, or to the centre of the Earth; and
<
lb
/>
deth that it goeth by proper inſtinct to the centre of the Univerſe,
<
lb
/>
and
<
emph
type
="
italics
"/>
per accidence
<
emph.end
type
="
italics
"/>
to that of the Earth; of which point we largely
<
lb
/>
diſcourſed yeſterday. </
s
>
<
s
>He laſtly confirmeth the ſame with a fourth
<
lb
/>
argument taken from the experiment of grave bodies, which
<
lb
/>
ing from on high, deſcend perpendicularly unto the Earthsſurface;
<
lb
/>
and in the ſame manner
<
emph
type
="
italics
"/>
Projections
<
emph.end
type
="
italics
"/>
ſhot perpendicularly upwards,
<
lb
/>
do by the ſame lines return perpendicularly down again, though
<
lb
/>
they were ſhot to a very great height. </
s
>
<
s
>All which arguments
<
lb
/>
ſarily prove their motion to be towards the Centre of the Earth,
<
lb
/>
which without moving at all waits for, and receiveth them. </
s
>
<
s
>He
<
lb
/>
intimateth in the laſt place that the Aſtronomers alledg other
<
lb
/>
reaſons in confirmation of the ſame concluſions, I mean of the
<
lb
/>
Earths being in the Centre of the Univerſe, and immoveable;
<
lb
/>
and inſtanceth onely in one of them, to wit, that all the
<
emph
type
="
italics
"/>
<
lb
/>
nomena
<
emph.end
type
="
italics
"/>
or appearances that are ſeen in the motions of the Stars,
<
lb
/>
perfectly agree with the poſition of the Earth in the Centre;
<
lb
/>
which would not be ſo, were the Earth ſeated otherwiſe.
<
lb
/>
</
s
>
<
s
>The reſt produced by
<
emph
type
="
italics
"/>
Ptolomy
<
emph.end
type
="
italics
"/>
and the other Aſtronomers, I can
<
lb
/>
give you now if you pleaſe, or after you have ſpoken what you
<
lb
/>
have to ſay in anſwer to theſe of
<
emph
type
="
italics
"/>
Ariſtotle.”
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
type
="
margin
">
<
s
>
<
margin.target
id
="
marg275
"/>
Ariſtotles
<
emph
type
="
italics
"/>
<
lb
/>
guments for the
<
lb
/>
Earths quieſſence.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
type
="
margin
">
<
s
>
<
margin.target
id
="
marg276
"/>
*
<
emph
type
="
italics
"/>
Reſtino indietzo,
<
emph.end
type
="
italics
"/>
<
lb
/>
which is meant
<
lb
/>
here of that
<
lb
/>
on which a bowl
<
lb
/>
makes when its
<
lb
/>
born by its by as to
<
lb
/>
one ſide or other,
<
lb
/>
and ſo hindered in
<
lb
/>
its direct motion.</
s
>
</
p
>
<
p
type
="
main
">
<
s
>SALV. </
s
>
<
s
>The arguments which are brought upon this occaſion </
s
>
</
p
>
</
chap
>
</
body
>
</
text
>
</
archimedes
>