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THEORIA COMETAUVM

'ecervti.o-nxm, cSfjft i~on,ornot~u.rn, OljfdrvcLtidnibus ^Je_tiincluni, ill. Newtoni et Cdl. WlnltoTTl JSisjootlieJzn. ^eomeltitce, cLzchuclta, czttn atzis e, JcsbvtbllTi.idUJr' ct,

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truorv illius dticwiitu-tjirijinrplanetarum,,temporibus proportionales ,Ischujus cLemcmJiratione eochihen.

orbitco cometoe, cpti oircct,Jvne/m, ccnat6%o,et adJuguniis ct® 1 S^c. vnvtrum apparuit, me,,thodo geometrt/cn, ex olJcryatiorvvhtiS dejmitapn ZsycrcSßura, adite qu a-m,pl-uriancc tonvctccrumper aliquotJ&cuZaJpectatoru-m orintac e.x eeleb.~Whi£toxn dtj-gnation e e/ditcc . JhTanc Jvqpotlvejifvprcecipue eocccluitilL.TVewtoimy dem vero CellQsd&.egxx#prce,cepta dedvt, quomodo locet, corneta/ram, in parahohtea ordtetperCa.lcu.lum, eZidpojJvri-t.JhifcejiippoJitis,Jacdeperjpict?nus,quodcomestceperbreve tantum tempus appa„reapt,et ulterius in, -remotas orhiicvrumpartes Jetati,per longijjdnwm, lempomsJpatium lateant; quod,/magnitudo capitis et cauda ; quaplerunqe, eadem. Jemper a, Jole «Wj/«', com-etce iryi-ructt^yariaticniperpc},

* • ''■ ItuoJit obnoxia,pporroquodeauda,rejectu nojtrijenjem, dejicere yzdeatur magnrrbudine, et tandem eyanejcat\

ivid. Jzg.q .ioD. $ed hic edam, leges Optica in, JubJldtnjum 'Vocandczeru-rvt, Jv variationem. pr adzeteru-m, corp^; Jqrue -mmijtrare velemus. Quod denique ad ?vum,cru.Ttt, horum, corporum, cometicom-m albznet,Keplerus maß-mmtan illorum, numerumstatuit; Jed P/allejus omnes^ ßup per Vareas te/mp orurn, penodos circwmeyolut-v, reduces Jesi ^ ite rum,, ta.ngu.a-m, corporapercnniwjectarvdospralrentpad 7 -t. -reducit} eoe

quibus in, generepatetr, cometa\s cum, -planctis

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'%arutnpartes / nolis eterra, znaguales fierco lern Jtatuit,Je 3 ccl : Hevel WXSplu ri u rnlaoo* W oijerva.tionum,apparatu, trjiructusjptjtea, illas tragettont as magis paxatolicas f cgu/i-m, reet.

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efleajjeauit,mgwUruscomede,euan eosdem.'ex concuijuplanetariorum, ejslwy-vo-ru-m, tntra atm,o,fpharas o-rirt etin-molerrvzrjignem, concrejiere exijtr.m epper linea,sjjn-rates.Cvid. Ttvg. 4 a PA .0 JenJtm, elate inalticm, t porro d. yo-rtictiaes alrejitc Jeramtwrjut lapis djunda^er lineas J}et quidem, circa verticem iParalolce demotu velcsjjfi-mo, indijtantiis -vero dS. rcmotcorilus,eocempligr.a.dR etB .motu tardiore et tardiJJvrno.TCancli-gjPotAj.ncpIures amplexi et praecipuein, P-allia PPetitru,^ „ Jed -tandem, dlasn, non, om-n.moTAanomen.is come tjis ex yoierejponperedeprehendit, hmc cometas m-undo coaevos JJe popius ajjisrm-a-v-it, guinz circulis intra Satur-tum, etJteUas Jxas. Jitrs, ivid -^ig^ ^ Tiet, Jyjtemanijtram, planetarum, amlcentibus,proutportio circdmJererctiaeR.B.hr- indicat, y^l guadam, etreumjerendapai-te, ad orbitam. Satior;nt utin Xda.cLCcedentilnts, -moventur f ita ut~ad Jß . msPertgao conjtitutv r videantur maximiet celerrime, ante-yero etpojt illud tem,pn,s et H-DUrm-inores et tardvores, hinc m motu

Quoque maequales, etji<jpa,tia ITY. TllpPjt. 2 }d.Jint aeptutlta: tandem, vero comehx inyajtißv /t-mis circulis per remo tiorespxrtes delate, u t oculis nojtmsjurriptan turpqjt hiultontm. annoruinter yaSapatione habita cu/magnttudirees arlctarum,pix vel breviora, vel lonpioi'a, iterum.apparehundRq/ihceeceZ.i^SSxaus ruryairremethodum exhibuit, guajcel, rationeJtppcJvto mo,

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