Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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to conſide ſo much in that which reaſon dictated to them, as that
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they have conſidently affirmed that the ſtructure of the Univerſe
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could have no other figure than that which they deſigned to
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ſelves. </
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>There are alſo ſeveral other very ſerious and curious doubts,
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not ſo eaſie to be reſolved by the middle ſort of wits, but yet
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netrated and declared by
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Coperninus,
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which we ſhall defer till by
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and by, after we have anſwered to other objections that ſeem to
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make againſt this opinion. </
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<
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>Now coming to the declarations and
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anſwers to thoſe three before named grand Objections, I ſay, that
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the two firſt not onely contradict not the
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Copernican
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Syſteme, but
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greatly and abſolutely favour it; For both
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Mars
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and
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Venus
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ſeems
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unequal to themſelves, according to the proportions aſſigned; and
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Venus
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under the Sun ſeemeth horned, and goeth changing figures
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in it ſelf exactly like the Moon.</
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Mars
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makes an
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hot aſſault upon the
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Copernican
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ſteme.
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The
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na
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of
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Venus
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appear
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contrary to the
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ſteme of
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cus.</
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Another
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culty raiſed by
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nus
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againſt
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nicus.</
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Venus,
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according
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to
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Copernicus,
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ther lucid in it
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ſelf, or elſe of a
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tranſparent
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ſtance.
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Copernicus
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eth nothing of the
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ſmall variation of
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bigneſs in
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Venus
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and in
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Mars.</
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The moon much
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diſturbeth the
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der of the other
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Planets.
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Anſwers to the
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three first
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ons againſt the
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pernican
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Syſteme.
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<
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>SAGR. </
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<
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>But how came this to be concealed from
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Copernicus,
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and revealed to you?</
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>SALV. </
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>Theſe things cannot be comprehended, ſave onely by
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the ſenſe of ſeeing, the which by nature was not granted to man
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ſo perfect, as that it was able to attain to the diſcovery of ſuch
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ferences; nay even the very inſtrument of ſight is an impediment
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to it ſelf: But ſince that it hath pleaſed God in our age to
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ſafe to humane ingenuity, ſo admirable an invention of perfecting
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our ſight, by multiplying it four, ſix, ten, twenty, thirty, and
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ty times, infinite objects, that either by reaſon of their diſtance, or
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for their extream ſmallneſſe were inviſible unto us, have by help
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of the Teleſcope been rendered viſible.</
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<
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>SAGR. </
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<
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>But
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Venus
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and
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Mars
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are none of the objects inviſible
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for their diſtance or ſmallneſſe, yea, we do diſcern them with our
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bare natural ſight; why then do we not diſtinguiſh the differences
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of their magnitudes and figures?</
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<
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>In this, the impediment of our very eye it ſelf hath a
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great ſhare, as but even now I hinted, by which the reſplendent and
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remote objects are not repreſented to us ſimple and pure; but gives
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them us fringed with ſtrange and adventitious rayes, ſo long and
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denſe, that their naked body ſheweth to us agrandized ten,
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ty, an hundred, yea a thouſand times more than it would appear, if
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the capillitious rayes were taken away.</
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Thereaſon whence
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it happens that
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nus
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and
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Mars
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do
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not appear to vary
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magnitude ſo much
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as is requiſite.
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<
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>SAGR. </
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<
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>Now I remember that I have read ſomething on this
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ſubject, I know not whether in the Solar Letters, or in the
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giatore
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of our common Friend, but it would be very good, aſwell
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for recalling it into my memory, as for the information of
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cius,
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who it may be never ſaw thoſe writings, that you would
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clare unto us more diſtinctly how this buſineſſe ſtands, the
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ledge whereof I think to be very neceſſary for the aſſiſting of us to
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underſtand that of which we now ſpeak.</
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