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# Title: [Philosophiae Naturalis Principia Mathematica] Philosophiæ Naturalis Principia Mathematica (shelfmark Leibn. Marg. 166)
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9.
PFTLOSOPMLE NATURALIS
D.Moro dubio magis resittune quam liquidiora, ue Oleum frigidum quam
orronom calidum, calidum quam aqua pluvialis, aqua quam Spiritus Vini.
Verum in liquoribus qui ad sensum Pacis Auidi Cune, uc in Rere, in
Aqua seu dulei seu Calla, in Spiritibus Vini, Terebinthi ex Salium,
in Oleo a Caecibus per destillationem liberato ex caletacto, Oleoque
Vitrioli ex Mercurio, ac Metallis liquefactis, ex siqui sine alii, qui
eam Auidi Cune uc in vasis agitaci morum impressum diurius con
Tervent, eAusique liberrime in guttas decurrendo resolvantur, nul-
Jus dubito quin regula allata Patis accurate obtincat: praesertim (I
experimenta in corporibus pendulis ex majoribus et relocius moris
instieuanEuE.
Denique cum receptissima Philosophorum atatis hujus opinio
Sic, Medium quoddam sethereum ec longe subcilissimum extare,
quod omnes omnium corporum poros de meatus liberrime per.
meet; a tali autem Medio per corporum poros Auente resistentia
oriri debeat: ue tentarem an resistentia, quam in mocis corporibus
experiIUT, FOta SIE in eorum externa (UpCrHCiC, AN VerO PaETCS Cti-
am interna in superficiebus propriis resiltentiam notabilem senti-
ane excogicari experimentum cale. Filo pedum undecim longitu-
dinis, ab uneo chalybeo Patis firmos mediante annulo chalybco, su-
Ixendebam prxidem abiernam rocundam, ad consticuendum pen-
dulum longicuainis praedictxe. Vneus Turrum pFXACAEUS CraE acie
concara, ut annulus arcu suo superiore aciei innixus liberrime mo-
VerCTUT. Arcui aurem inferiori annectebatur Alum. Pendulum ita
consticutum deducebam a perpendiculo ad distantiam quasi pedum
Tex, idque secundum planum aciei unei perpendiculare, ne annu-
lus, oscillante pendulos supra aciem unei ultro cieroque laberetur.
Nam punctum suspensionis, in quo annulus uncum tangit; immo-
tum manere debet. Locum igitur accurate nocabam, ad quem de
duxeram pendulum, dein pendulo demitso nocabam alia eria loca ad
quae redibat in sine oscillacionis primae, secundae ac tertix. FIOCre.
Decebam Expius, ue loca illa quam porui accuratissime invenirem.
Tum pexidem plumbo se srarioribus, quae ac MANUS CrANE, me
callis implebam. Scd prius ponderabam pexidem vacuam, una
cum parce sili juae circum prxidem volvebatur ac dimicio par-
eis reliquae quae inter uneum ec pexidem pendulam cendebacur.
Nam silum censum dimidio ponderis sui pendulum a perpendiculo
digressum semper urget.) Huic ponderi addebam pondus Aeris
quem prxis capiebar. EF pondus tocum crat quasi pars septuase.
sima octara prxidis mecallorum plena. Tum quoniam prxis me-
callorum