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quam, & majori gravitate fit attra-ctio. Quod si non velimus aerem quiin tubo j/cT continetur, ore attrahe-re , infundemus aquam in vas ß a,quousque siiperinfusa per tubum y Sprincipium fluxus accipiat, & itarursus tota qua: est in «.£ vase aquaexhaurietur; vocatur autem, ut di-ctum est, ySeK, spiritalis siphon, velspiritalis diabetes.

Ex jam demonstratis perspicuum estsiphonis fluxum, eo immobili perma-nente , inaequalem fieri; idem enimcontingit & vase ad fundum perfo-rato & fluente; namque &hic fluxusinaequalis est, propterea quod in prin-cipio quidem aquae effusio majori gra-vitate premitur, post vero ea evacua-ta minori: &: quo siphonis excessusmajor est, eo celerior fluxus efficitur:rurffis enim fluxus qui fit per osculumipsius, majori gravitate urgetur, quamcum minor sit exterior excessus, quovidelicet superficies aquae in vase exittentis exterius siphonis oiculum exce-dit ;i fluxus igitur per siphonem fem-per inaequalis jam dictus est; oportetautem fluxum semper aequalem persiphonem invenire.

Sit aliquod aß vas aqua plenum inquo supernatet yS lebetarium, ha-bens os obtectum operculo yS, peroperculum vero & fundum lebetariitrajiciatur siphonis alterum crus, &Cstanno ad foramina coarctetur: alte-rum autem crus sit extra vas aß: ha-beatque osculum humilius quam sic

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