Casati, Paolo
,
De igne dissertationes physicae
,
1686
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Diſſertatio Tertia.
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perinde ac ſi immitteretur in vas firmiorum laterum: </
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<
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xml:space
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">ita quoquè
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circunfluus aër craſſior aliquatenus reſiſtit, ne veſicæ latera exten-
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dantur, ideoque comprimitur ingeſtus aër; </
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<
s
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echoid-s1841
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xml:space
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preserve
">qui poſtmodum in
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aëre raro, minuſque reſiſtente dilatari poteſt. </
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<
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xml:id
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echoid-s1842
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xml:space
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">His & </
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<
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echoid-s1843
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xml:space
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">ſimilibus
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non videtur operæ pretium immorari. </
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<
s
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echoid-s1844
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xml:space
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">Vnum ſupereſt, quod ali-
<
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quâ indigeat explicatione. </
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<
s
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echoid-s1845
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xml:space
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">In ſiphonem æqualium crurum vtrâ-
<
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que extremitate hiantem infundunt Mercurium, non tamen omni-
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no implent; </
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<
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xml:space
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">& </
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<
s
xml:id
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echoid-s1847
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xml:space
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">quia ſe Mercurius æqualiter librat, æqualis aë-
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ris portio hinc & </
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<
s
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xml:space
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">hinc ſiphonem replet. </
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>
<
s
xml:id
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echoid-s1849
"
xml:space
="
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">Appoſitis vtrique oſculo
<
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digitis inuertitur ſiphon, & </
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>
<
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echoid-s1850
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xml:space
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">aër in ſuperiorem ſiphonis curuatu-
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ram ſe recipit: </
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>
<
s
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echoid-s1851
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xml:space
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preserve
">Tum oſcula immerguntur Mercurio ſubiectorum
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ſingulis vaſorum, atque amotis digitis deſcendit in vaſa pars Mer-
<
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/>
curij, pars in vtroque crure altitudinem habens æqualem ſuſpen-
<
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ſa manet. </
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>
<
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xml:space
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">Firmatur ſiphon immotus, & </
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<
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xml:space
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">alterutrum vasita at-
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tollitur, vt illud ſiphonis crus immergatur profundius: </
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<
s
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xml:space
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">tunc in
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crure illo attollitur Mercurius, ſed tantundem in reliquo crure
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deprimitur. </
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>
<
s
xml:id
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xml:space
="
preserve
">At ſi hæc eadem præſtiteris ſiphone eodem prorſus
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pleno Mercurij, omni aëre excluſo, ſiquidem crura ponuntur lon-
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giora digitis 30, deſcendit vtrinque Mercurius ad ſtatam altitudi-
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nem: </
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>
<
s
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xml:space
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">verùm ſi vas alteri cruri ſubiectum attollatur aut deprima-
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tur, attollitur quidem aut deprimitur ibi Mercurius, ſed in altero
<
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crure immotus manet, quaſi cum illo nihil habens commercij.
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</
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<
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xml:space
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">Quando aër intercipitur inter duos illos Mercurij cylindros, aiunt
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eſſe non vt eorum nexum, ſed vt impedimentum, ne ad ſe viciſ-
<
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ſim proximè accedant, adeòque, dum cylinder vnus Mercurij à
<
lb
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ſuo cylindro aërio attollitur, ab hoc vrgeri aërem intermedium,
<
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vt reliquus deprimatur. </
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>
<
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xml:space
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">At cùm nihil aëris in ſiphonem admiſſum
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fuit, cylindri illi Mercuriales nihil habent intermedium, quod
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vrgeant, ſed ſinguli ſuſtinentur à ſuo aërio cylindro exteriùs
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premente.</
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<
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">Maur. </
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<
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xml:space
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">Horum ìgitur Philoſophorum veſtìgìa prementibus di-
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cendum eſt, duos aërios cylindros exteriùs incumbentes Mercu-
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rio vaſorum ſuſtinere duos cylindrös Mercuriales in cruribus ſipho-
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nis, ſimulque reniti virtuti elaſticę aëris intercluſi; </
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<
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tiùs vaſculo, ad digitos 4 ex: </
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<
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<
s
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xml:space
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">, Mercurialem cylindrum bre-
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uiorem factum minùs ponderare, ac propterea exteriorem aërium
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cylindrum, licèt digitis quatuor diminutum, præpollentem reli-
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quo fiſtulæ Mercurio ex vaſe in fiſtulam extrudere Mercurium </
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