De rerum varietate, libri XVII . . E B G F C G E C Dtusexorieteinoccidente, &rurfuspofitio orientis & occidentis habet circulum determinantem eam d f b g, & me- x vdium per qucm motusille celerrimus eft, &eft abcd. Naquilibet motus in quocunq; orbe habet unum circuluma-gnum,inquofuntomniapun&a, qua^uelocifsimemouentur:quia ficut funt poli naturales,uel mathematici,quiefcentes m quocunque motu,ita & circulus magnus,medius iii-ter illos qui fixus eft naturaliterraut mathematicus cft, quicxmotu uelocifsime mouetur. Eft ctiam intelligedum pro * v pra?cedentiu5qu6dcum t
De rerum varietate, libri XVII . . E B G F C G E C Dtusexorieteinoccidente, &rurfuspofitio orientis & occidentis habet circulum determinantem eam d f b g, & me- x vdium per qucm motusille celerrimus eft, &eft abcd. Naquilibet motus in quocunq; orbe habet unum circuluma-gnum,inquofuntomniapun&a, qua^uelocifsimemouentur:quia ficut funt poli naturales,uel mathematici,quiefcentes m quocunque motu,ita & circulus magnus,medius iii-ter illos qui fixus eft naturaliterraut mathematicus cft, quicxmotu uelocifsime mouetur. Eft ctiam intelligedum pro * v pra?cedentiu5qu6dcum tres circuli magni in f>hx-ra fcinuiccm fecant ad perpen-diculum ,communes fectionesillofumfemper funt locopoli,rcfpectu tertij circuli,ueiuti a c,bd,f G,fefecet ad redtos infexpunctis ab,c D,FG,itautFG&b Diecentfein AC,eruntAcpoli f d c B,qui cfl terrius circulus,uidentur D F B G A B C D A F C G Oc. •D An. A A Ied:&im. A B C D D E B G A F C G. 4*o L I B. IX. C A P, XLVit uidenturautemefleoctofedtiones in plano ^fednonfuntxv j, nifl fex,ut liquet experto in fpha?ra. Ex his liquet cum dicogratia exempli, s moueri ab orientein occidentcm,dupliciter polfeinteiligi:uelratione totius,itautintelligamus circulum a b c d moueri a finiftra in dextram , & s feratur inparte fuperiore uerfus b ex d, ininferiore ex b in d,&ita illiopponetur motus exB inD perA,&cx Din Bperc,uelrationepartis , &itain eodem motu circuli a b c d : & adeandem partem dicemus, quod illud quodmouetur in to-ta medietatefupetiore qux cIIdab, moueturab orientcinoccidentem:&quicquid mouetur,intotamedictatcin-ferioremouetur,ab occuientein orientem,id efr,cx f uer-{ns , hocquefecundo modo eodemmotu, utanteadiximus : idempotettferriincontrarias partes,cjuia cireu-x v 11 u li partes contrariis motibus pnmo crgo mo-do , latio contralationem diftinguitur: infccundo autem,termini lationis naturales uel mathematici , quos ( Ut di-xi
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