. Guilielmi Gilberti Colcestrensis, medici londinensis, De magnete : magneticisque corporibus, et de magno magnete tellure; physiologia noua, plurimis & argumentis, & experimentis demonstrata . luris potiiis profi-ci{cidemonftrabimus,quimo(aauam illamYquam vocant) fpha*-ram,firmarr)enturn, & aplanes,innumeris globis ftcllifq; iniignitam,quarum diftantise atellurenunquamiquouisdemonftrata: funt,autdemonftrari poftunt^totoquafilabente mundo) circumuolui. Etfanemagis verifimile videri debet perpufilliterrcftris corporis in-flexu quodam & inclinatione, {aluari manifeftocadcftesapparcntiaspoffe,qua
. Guilielmi Gilberti Colcestrensis, medici londinensis, De magnete : magneticisque corporibus, et de magno magnete tellure; physiologia noua, plurimis & argumentis, & experimentis demonstrata . luris potiiis profi-ci{cidemonftrabimus,quimo(aauam illamYquam vocant) fpha*-ram,firmarr)enturn, & aplanes,innumeris globis ftcllifq; iniignitam,quarum diftantise atellurenunquamiquouisdemonftrata: funt,autdemonftrari poftunt^totoquafilabente mundo) circumuolui. Etfanemagis verifimile videri debet perpufilliterrcftris corporis in-flexu quodam & inclinatione, {aluari manifeftocadcftesapparcntiaspoffe,quam totius mundi fyftcmatis agitationc; maxim£ vcro quodhic motus,ad tclluris tantum cmoIumentumordinatusfit:Stcllis au-tcmfixis, aut erronibus, omnino vtilis non fit. Immutantur cnimhoc motu in omni Horizontc ortus & occafus ftellarum,tum etiamin fummo ca?li culminationes^ adeo vt ftellae quae olim verticalcs fu-crant, nunc a verticc gradibus quibufdam diftcnt. Cautum enim anatura eft, anima tellurisfeumagnctico vigore, vt quemadmodumneceflarium erat in temperandis, fufcipicndis, aucrtendifquc, ido-neis temporibus folis radijs & lumine,vt poli telluris refpe&us a po-. DE MAGNETEj LlB, Hlis ecliptica* 2 $ & amplius gradibtis diftarent: Ita riuncrhoderandis*8c per vices & fucceflionenifufcipiendis ftellarum fixarum radijs lu-riiinofis; telluris poli in eadem diftantia ab eclipticajin circulo eclip-ticse ar&ico volutarent ; rcperentue potius lentogradu5qu6d a&io-nes ftellarum, ijfdemparallelis eireulis, non femper Mfterent, fedmutationem haberent tardiorem :.Nam ftellarum influentia^ non a-deofunt veherrientesj vt celerior fit curfus defideratus * Lento igi-tur pedc infle&itur axis, & ftellarum radij fupcr facicrri telluris tan-tiim Ipngo tempore immutantur?quantum ar&ici vel polaris circulidiamctcrextcnditur :vnde ftella in extremitate caudas Cynofura^quaeolimj 2 gradibus,minutis 24 (temporcfcilicef Hipparchi)di-ftabat a polo rriundi, fiuea pun&o illo <quem polus ielluris, rcf
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