Fabri, Honoré
,
Dialogi physici in quibus de motu terrae disputatur
,
1665
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à quo planum Tropici HL tantulùm æquè recederet, vt æqualis vtrinque
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effet diſtantia, ſub æqualibus tamen ſemper angulis DAF, EAF. </
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<
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">Tunc
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autem poſito quod Apogæum ſit in principio Arietis, plus temporis po
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netur ab Ariete ad Cancrum, quàm à Cancro ad Libram; & minus à Li
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bra ad Capricornum, quàm ab hoc ad Arietem; tempora tamen erunt
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æqualia à Cancro ad Libram, à Libra ad Capricornum, ſcilicet à me
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diocri diſtantia ad Perigæum: & ab hoc ad mediam diſtantiam; erunt
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item æqualia inter ſe tempora à Capricorno ad Arietem, & ab hoc ad
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Cancrum. </
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Anguſtin.
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"> Ille tuus calamus volatilis, vt vocas, mihi ſummopere ar
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ridet, itemque deſcenſi ille aquæ in tubo; aliquid ſimile in mentem
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venit, cùm ſcilicet aqua, ſeu vinum per infundibulum in dolium mitti
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tur; nam circa os infundibuli vinum in ſpiras agitur, propter illam ra
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tionem, quam attuliſti. </
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<
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id
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">Idem accidit in quibuſdam fluminibus, ſeu la
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cubus, ex quibus aqua in profundum hiatum ſeu voraginem ſpiratim deſ
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cendit, ſimulque à vortice naves abſorbentur, ſi quæ mala ſua ſorte eò
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appellantur. </
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Antim.
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"> Aliud omittis longè iucundius, vidiſti enim aliquando venti
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turbinem, qui feſtucas, folia, pulverem in orbem agit ac vorticem;
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immo & naves in medio mari ſic à Typhone miſerum in modum abri
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piuntur; vnde putas hunc venti vorticem ſeu turbinem ortum ducere? </
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Auguſtin.
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<
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id
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"> Certè noſtri Philoſophi communiter docent, hunc effe
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ctum à varia reflexione procedere, quæ in circumaſſurgentibus monti
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bus fiat. </
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Antim.
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<
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"> Sat ſcio. </
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">Sed quænam reflexio in vaſta terrarum & Oceani
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planitie fieri poteſt? </
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<
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">in qua nulli montes aſſurguat. </
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<
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">Alia profectò ratio
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eſt, ex eodem noſtro principio petita; nempe vbi aliqua portio aëris ſu
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perioris tractus denſatur (denſari autem poteſt multiplici caſu) gravior
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redditur inferiore; cùm autem deorſum cadere non poſſit, niſi inferio
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rem extenſione æqualem ſurſum extrudat, nec tam citò extrudere poſ
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ſit, ſpiratim per illius latera deſcendit; Hinc turbo & vortex, cujus rei
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analogiam habes in adductis ſupra exemplis, ad hunc porrò effectum
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perinde eſt, ſive aër Superioris tractus condenſetur, ſive inferioris rareſ
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cat: Hinc cum igne Typhon, aliàs cum aqua conjunctus eſt; igne qui
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dem quo inferioris aëris tractus ſtatim rareſcat, ac proinde maximo im
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petu aër Superioris tractus ſpiratim ruat; aqua verò ſi magna Vaporum
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vis expreſſa cum igne, caloris vi, in ſuperiori aëris tractu ſtatim conden
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ſetur, ac proinde aqua ſpiratim etiam & præceps deorſum ruat. </
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Auguſtin.
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<
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"> Inde fortè imber guttatim deſcendit, cùm enim ſurſum ex
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trudendus ſit aër, humor in deſcenſu in guttas dividitur ad faciliorem
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deſcenſum. </
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Antim.
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A vero aberras, Auguſtine, nec iſta, quam dicis, vera ratio
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eſt, nam & gutta maior ex ſublimiore tractu deſcendit, vt non rarò
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æſtate accidit; quia forvente æſtu, altiùs vapores aſſurgunt, & perexiguæ
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guttæ lentiſſimè deſcendent, vt ſæpè vidiſti in nebula, dum reſolvitur: </
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