Cap. 3. flai-dum in ſuototo quie.

ſcens pon-

derat.

8 10: AL. S0XELLI

aquæ deſcendentis, nam perſeuerante vertigine, ſci-licèt translatocentro grauitatis vltrà medium in Oſemper ſemianulus EFG grauior eſſet, quàm GkE,& propterea ille ſemper deſcenderet, hic verò ſem-per aſcenderet, proindequc anulus excurreret mo-tu perpetuo progreſſiuo, quod eſt falſum. perſiſtitergo centrum grauitatis ſemper in centro N anuli,ſiuc aqua in co contenta quieſcat, ſinè circumduca-tur, nam ob contiguitatem partium aquæ non poteſtmoucri vna pars aquæ F v. g. quin vniuerſa aqua-EKG æquali velocitate renoluatur, proindeque nõvnica pars tantùm, ſed aqua tota impulsũ,& impe-tum acquirit, non ſecùs ac rota lignea tota ſimul ic-tum recipit atque circa cẽtrum grauitatis eius æqui-libratur, pari modo aqua contenta in vaſe AC antepræmiſſæ figuræ, licét ſit fluida, habet tamen pun-ctum M circa quod partes habent æqualia momenta,perinde ergo ſe habent ac ſi vniuerſa aqua in prædi-cto vaſe contenta dura eſſet,& conſiſtens vt rota li-gnea, velintra fiſtulam anularem EEKG contenta-,eſſet in qua reuoluta, ſiuc quieſcente rota, aut aquaſemper centrumgrauitatis eius in ceodem ſitu perſe-ucrare debet,& proinde libra HL quicſcet in codẽſitu horizontali. Igitur dubitandum non eſt aquam-in ſuo toto collocatam, grauitatem exercere, ſiuè illaomnind ibidem quieſcat, ſiue quomodolibet agite-tur,& circumuoluatur.

Poſi-