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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica (shelfmarks Leibn. Marg. 100:1/2, Stück 1; Leibn. Marg. 100:1/2)
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 sreslaticis.
Cap. XIV.
dC FOF TV M
Ecundum has leges; reddenda eric racio rariorum in Experimento, Torricettiano
TUInE qua sEquunET.
 dicto, Phaenomenum. FF quidem, in eam cautam, haec olim scripta erant, et
Societati Reciae Fondini extribita, Augusti +3 e 20, 1662. quo plurium Rxperi-
mentorum, hbidem cum cemporis agicucorum, racio sraciea redderecur: Qualia
ejus Orificio C intra superficiem subjecti lydearsrei AB, (obty-
rato aliquandiu orificio C anec sic immersatur, ne TIydrarorrum
invertendo coua alsce cu rectulo;) atque in eo situ sultineatur.
Si Firclarorrum cubo contentum, quod superticiei AB eminet, plus
craritet in subjectas rartes C, quam prestus incumbentis aeris in
reliquas ejusdem AB ParteS; Ret descensus in C, depusis quae à la-
tere lunt partibus minas plesis, etiamsi a pressu superincumbentis
aeris, clauso in D tubo, aesendatur FIydrarorrum tubo contencum.
Oui quidem descettus cousque persererabit; doncc, eAuente FTy-
crarsrri parte (relicto lucra tubum spatio D P racuo HIy dearorri,)
e Turgentibus (ProDur Hunc eAuxum) superticiei AB partibus re.
liguis; quod in Tubo reliquum eAt TC tantundem premat C quan-
cum Aer partes reliquas ipsius A B: cumque sicum retinebit.
Datet ex praecedentibus. Ouippe dum
LHIydrargyrum cubo contencum (ut-
ut ab Rere Superne detentum) pluS
DEEMat C quam ab RETE PTCMUNEUE
Partes reliquae, deprimetur C: (hydrar-
Syro etuente:) ubi rero eo perren-
cum est ve hydrarsyri reliquum C I
tantundem prEmaL C, quancum pre
muneur ab aere partes reliqua; (PFOP.
ter aequalem ubique prectum,) situm
illum rerinebit. DET DEOP. E. hUIUS.
SE HOL +V M.
Teo aurem, Spatium DF vacuum Fpararerri: non enim hie liber (neque
opus est ad praesens negorium) disputare, num sit simpliciter racuumm, necne.
Siguis enim releraris alterat, vel aliunde probatum eac, materia aliqua repletum
else, quod rel pondus nullum habeat, rel nullum quod in sensuum noltrorum ob.
terrationem incurrac; nobis illud hac in re neque obest neque prodest.
Dico etiam plus sravitat, ee tantundem eravitat, pocius quam plus aut aeque
Ccare est: Duoniam quae in se aeque oraria lunc, pollume ramen pro vario siru in.
aequaliree sraricate.
Ouibus PoMtis:
Sit FIrdrarorri, subjecto rale contenti, superticies HTorirontalis AB
externo Aeris prestui exposita, acque Tubus CD, (clausus in D, e
apertuS in C,) hydcarorro impleatur, et dein invertatur; immerlo
Atesoe