Descartes, René
,
Renati Des-Cartes principia philosophiae
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tim motu globulorum coeleſtium ex hoc corpore D
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ejectae ſunt; & harum quidem nonnullae ſe corpori C
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adjunxerunt, ſed maxima pars ſurſum aſcendit verſus
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E & B, materiamque augendo corpori E ſubminiſtravit. </
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XXXIX.
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De hujus quarti corpo
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ris accretione, & ter
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tii expurgatione. </
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Quippe tempore diei & aeſtatis, cùm Sol
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me
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dietatem corporis D vi luminis & caloris rarefaciebat,
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non poterat omnis materia iſtius medietatis inter duo
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corpora vicina C & E contineri; neque haec corpora
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vicina, quae dura erant, locis expellere, atque ideò ple
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raeque ejus materiae particulae per poros corporis
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verſus B aſcendebant, quae deinde tempore noctis &
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hyemis, ceſſante iſta rarefactione, ob gravitatem ſuam
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rurſus deſcendebant. </
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>Multae autem cauſſae erant, prop
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ter quas particulae tertii elementi, quae ſic ex corpore
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D egrediebantur, non poterant omnes poſtea in
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reverti. </
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>Nam majore impetu exibant, quàm redibant;
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quia major eſt vis dilatationis à calore orta, quàm gra
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vitatis. </
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>Et idcirco multae per anguſtos meatus corpo
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ris E ſibi viam faciebant ad aſcendendum, quae poſtea
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nullam invenientes ad revertendum, in ejus
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conſiſtebant; ac etiam nonnullae, meatibus iſtis im
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pactae, ulteriùs aſcendere non valentes, aliis deſcenſu
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ris vias occludebant. </
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>Praeterea quaecunque caeteris
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errant tenuiores, & à figurâ laevi & tereti magis diſta
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bant, ſolo globulorum coeleſtium motu extra
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D pellebantur, ideòque primae ſe offerebant ad aſcen
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dendum verſus E & B; atque horum corporum particu
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lis occurrendo, non rarò figuras ſuas mutabant, & vel
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illis adhaerebant, vel ſaltem deſinebant aptae eſſe ad re
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vertendum verſus D. </
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dies & annos, ut magna pars hujus corporis D eſſet </
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