Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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PRÆFATIO.
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<
s
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xml:space
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">quantis refluum vaga Cynthia Pontum
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Viribus impellit; </
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">dum fractis fluctibus ulvam
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Deſerit, ac nautis ſuſpectas nudat arenas;
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">Alternisvicibus ſuprema ad littora pulſans.</
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xml:space
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">De inveſtigiatione autem Naturæ Legum ut dicam, res
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altius petenda eſt.</
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<
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">Subſtantiæ quid ſint inter nobis ignota referendum eſt.
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<
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">materiæ proprietates novimus, ſed in
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quo ſubjecto hæreant hæ nos omnino latet. </
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<
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xml:space
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">An Corpori
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non multæ aliæ tribuendæ ſint proprietates, de quibus
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nullam habemus ideam, quis aſſerere poteſt? </
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<
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">Cui etiam
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enotuit an, præter Corporis proprietates quæ a materiæ
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eſſentia pofluunt, non dentur aliæ a DEI libera poteſtate
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pendentes, ſubſtantiamque extenſam & </
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<
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">ſolidam (hæc e-
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nim a nobis Corpus vocatur) quibuſdam, ſine quibus exi-
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ſtere poſſet, proprietatibus ornari. </
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">De ignotis nihil af-
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firmandum aut negandum eſt.</
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<
s
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">Quantum ab hac regula aberrant illi, qui, quaſi o-
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mnia quæ ad Corpus pertinent pleniſſime perſpecta habe-
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rent, in Phyſicis ratiocinantur, paucaſque Corporis pro-
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prietates notas ipſum Corpus conſtituere aſſerere non
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dubitant.</
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<
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">Quid obſecro ſibi vult proprietates ſubſtantiæ ipſam
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conſtituere ſubſtantiam? </
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<
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xml:space
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">An quæ ſeparatim ſubſiſtere non
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poſſunt ſimul juncta ſubſiſtent? </
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<
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">An extenſum, impenetra-
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bile, mobile eſſe, & </
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">concipi poſſunt, ſine ſubjecto cui
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hæ proprietates @mpetant? </
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<
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xml:space
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">Et an hujus ſubjecti ullam ha-
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bemus ideam?</
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