Guevara, Giovanni di
,
In Aristotelis mechanicas commentarii
,
1627
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lapis C. quàm lapis D conſtitueretur fulcimentum in hac
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latione vectis. </
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<
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">Ideoque vtrumque aliquo modo, illam par
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ticipare dicendum erit. </
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<
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">Cum igitur obijcit Baldus, quod
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tunc Philoſophi ratio procederet ſi ſtante naui immobili, re
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miges in ipſo remigandi actu, mare pulſarent, quia tunc verè
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ſcalmus fieret fulcimentum mare autem pondus. </
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<
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">Reſpon
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detur retorquendo illi argumentum: quod tunc procederet
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ratio ab ipſo adducta, ſi ſtante mare immobili ſicut terra,
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remiges appulſa palmula, nauem ſcalmo alligatam, antror
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ſum impellerent, vt cum Romani
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cõtræ
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Carthaginenſes na
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uales copias primo eſſent traducturi, ad remigium in arena
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exercebantur; quia tunc verè mare fieret fulcimentum, ſcal
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mus verò cum naui, pondus. </
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">Quoniam verò tàm mare, quàm ſcalmum diximus
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habe
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re rationem fulcimenti aliquo modo, non autem ſimpliciter
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propter mobilitatem vtriuſque; examinan dum eſſet, quod
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nam ex his, minus moueatur, vt hoc potius quàm alterum
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dicatur magis participare rationem fulcimenti. </
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">Sed fortaſ
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ſe difficile poterit hoc penitus determinari. </
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">Pendet enim
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non modo à proportione partium remi, nempe quomodo
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ſe habeat pars, quæ eſt à ſcalmo ad extremum manubrij ad
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eam, quæ eſt à ſcalmo ad extremum palmulæ; verùm etiam
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ab applicatione palmulæ in mare, vt ſi plus vel minus intro
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mittatur,
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portionem aquæ depellat. </
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">Quando
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quidem ſi profundè palmula immergatur,
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magnamq.
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por
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tionem aquæ per illam remiger conetur depellere, tunc pro
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cul dubio, minus mouebitur aqua retrorſum, quàm nauis an
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trorſum. </
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<
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">Quod ex eo ſit palam, nam ſi nauis in mare me
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diet inter duos ſcopulos, ad quos palmulæ poſſint pertinge
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re, ſimili conatu remiges ſcopulos pulſando ac aquam pul
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ſare conſueuerunt, magis profecto nauem ipſam mouebunt.
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</
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<
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">Quod ſi alioquin palmulæ minimè immergantur, ſed veluti
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ſolam ſuperficiem aquæ depellant, certum etiam eſt, magis
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aquam illam depulſam
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totamq.
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ferè in ſpumam redactam
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abire, quam nauem vlterius progredi, aut moueri </
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Polyb. lib.
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1.longe an
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te med.</
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<
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">Tandem addit Baldus, falſum videri, quod aſſerit Ariſto-</
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