Descartes, René, Renati Des-Cartes principia philosophiae

Page concordance

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              CVI.
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              Qualia ſint corpora
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              quae facilè uruntur. </s>
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              20</s>
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              25</s>
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              30</s>
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              Et cùm ejuſmodi particulae, quae ex corpore, quòd
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              uritur, ſimul egrediuntur, ſunt tam multae ut vim ha­
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              beant globulos coeleſtes ex aliquo ae
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              ris vicini ſpatio
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              expellendi, ſpatium illud flammâ implent. </s>
              <s>Si verò ſint
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              pauciores, fit ignis ſine flammâ, qui vel paulatim per
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              fomitis ſui meatus ſerpit, cùm materiam quam poſſit
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              depaſcere, ibi nanciſcitur: ut in iſtis funibus ſive elly­
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              chniis quorum uſus eſt in bello ad tormentorum pul­
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              verem incendendum. </s>
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              CVII.Cur quaedam inflam­
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              mentur, alia non. </s>
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              5</s>
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              Vel certè, ſi nullam talem materiam circa ſe habet,
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              non conſervatur, niſi quatenus incluſus pori corpo­
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              ris cui inhaeret, tempore aliquo eget ad omnes ejus
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              particulas ita diſſolvendas, ut ſe ab iis poſſit liberare. </s>
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              Hocque videre eſt in carbonibus accenſis, qui cineri­
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              bus tecti, per multas horas ignem retinent, propter
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              hoc ſolùm, quàd ille ignis inſit quibuſdam particulis
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              tenuibus & ramoſis, quae aliis craſſioribus implicatae,
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              quamvis celerrimè agitentur, non tamen niſi unae poſt
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              alias egredi poſſunt; ac fortè priuſquam ita egredian­
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              tur, longo motu deteri, & ſingulae in plures alias di­
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              vidi debent. </s>
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              CVIII.
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              Cur ignis aliquandiu in­
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              primis ſe conſervet. </s>
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              10</s>
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              15</s>
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              20</s>
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              Nihil verò celeriùs ignem concipit, nec minùs diu
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              illum conſervat, quàm pulvis tormentarius, ex ſul­
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              phure, nitro, & carbone confectus. </s>
              <s>Quippe vel ſolum
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              ſulphur quam-maximè inflammabile eſt, quia conſtat
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              particulis ſuccorum acrium, quae tam tenuibus & ſpiſ­
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              ſis materiae oleagineae ramulis ſunt involutae, ut per­
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              multi meatus inter iſtos ramulos ſoli primo elemento
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              pateant. </s>
              <s>Unde ſit, ut etiam ad uſum medicinae ſulphur
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              calidiſſimum cenſeatur. </s>
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            <p type="margin">
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              CIX.
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              De pulvere tormentario
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              ex ſulphure, nitro &
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              carbone confecto; ac
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              primo de ſulphure. </s>
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            <p type="margin">
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              25</s>
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            <p type="margin">
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              30</s>
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            <p type="main">
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              Nitrum autem conſtat particulis oblongis & </s>
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          </chap>
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