Casati, Paolo
,
De igne dissertationes physicae
,
1686
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De Flamma & Fumo.
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uamus, quæ deinde extenuatur in apicem, quia in obſtante aëre
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diuidendo viam ſibi quærit exacutus in cuneum vapor cum ignicu-
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lis erumpens: </
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">ſi tamen ex illa flammâ ignem petere quis voluerit,
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multò faciliùs & </
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">citiùs accenditur candela immiſſa in flammam non
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prope ellychnium, ſed verſus apicem, immo ſupra apicem ipſum,
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ſi flamma non fluctuet; </
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<
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">quia propè ellychnium humor terreis par-
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ticulis permiſtus nondum eſt adeò attenuatus, ſicut in progreſſu
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ex concepto calore raritatem maiorem induit; </
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<
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">ac proinde in can-
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delæ accendendæ ellychnium ſe faciliùs inſinuat flammæ apex, vbi
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maior eſt vis igniculorum; </
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<
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">quippe qui minùs ab admiſto humore
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cohibentur, quando hic eſt valde rarus, ac quando nondum eſt
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ſatis attenuatus. </
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<
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">Hinc ignis, quem Reuerberij vocant, eſt validiſ-
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ſimus, quia repercuſſa flamma à furni fornice ita reflectitur, vt
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apex ipſius flammæ incurrat in corpus diſſoluendum. </
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<
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">Cum igitur
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ibi deſinat flammæ apex, vbi humore ſatis attenuato libertatem
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nanciſcuntur igniculi, manifeſtum videtur ad flammam requiri
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humorem vi caloris diſſolubilem. </
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<
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">Propterea, vt ante me dicere
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memini, amplior flamma ex lignis, quàm ex carbonibus excita-
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tur, quia plus humoris in ligno ineſt, quàm in carbone. </
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<
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men carbonum duplex genus diſtinguendum eſt; </
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<
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">alij ſcilicet ſunt
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prunæ poſt flammam extinctæ in foco relictæ, alij verò ſunt ligno-
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rum fragmenta, quæ dum admoto igne comburi incipiebant, ſuper
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iniectâ humo prohibitaſunt, ne conflagrarent, adeò vt vix ali-
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quid præter humorem aqueum redundantem expirauerint. </
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<
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tem poſteriore loco recenſiti carbones, ſiaccenſi extimulentur
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flatu, maiorem reddunt flammam, quàm illi priores, quippe qui
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longè maiore copiâ ſulphurearum particularum, humoris, & </
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<
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">Sa-
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lium volatilium referti ſunt præ illis, quos ſubſidens flamma reli-
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quit: </
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<
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">propterea ſicuti horum efficacitas in calefaciendo ob ignicu-
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lorum multitudinem vehementior eſt, ita expiratio (maximè in lo-
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co clauſo) eſt multò nocentior.</
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">Idetiam in Lithanthrace, ſeu carbone foſſili, ſuo damno
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experti ſunt Hollandi, qui in Nouâ Zemblâ hyemârunt anno 1596,
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vt in Diario Nautico part. </
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">Veſperi,
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inquiunt, ex dictis carbonibus luculentumignem ſtruximus, qui
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quidem magnum calorem præbuit, ſed ab infortunio nobis non
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cauebamus, nam, quandoquidem calor ita nos reſiciebat,
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conſilium quærebamus, quo illum multo tempore </
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