ſumme ſimplex in genere corpoꝝ. ſūmemultiplex ī efficacia. ſūme mobilis ⁊ abſolutē penetratōis ⁊ mīme reſiſtētie. ⁊ ſūme diſparia ⁊ ꝯͣria generās ⁊ ꝯciliās ſūme ꝯuertibilis. oīs naturalis motionisprincipiū ⁊ origo. ſūme ꝑfectibilis. ſūmelocūda. ſūme cōicabilis. vn̄ luce ī corꝑibus nihil ē vtiliꝰ. nihil ꝯuenientiꝰ. nihilpulcriꝰ. nihil velociꝰ. nihil ſubtiliꝰ. nihilmnipaſſibiliꝰ. nihil virtuoſiꝰ inuenit̉. Eſtaūt differētia int̓ lucē ⁊ lumē. Nā lumēeſt qͥdā defluxꝰ a luce ſiue irradiatio defluēs a ſubſtātia lucis. Lucē āt dic̄ ip̄aꝫfontalē ſubſtātiā ſuꝑ quā lumē innitit̉.Si eī lux ꝯſiderata ī ſe eēt accidēs neceſſario ꝑ ſe alicui eēt accidēs. qꝛ accidensꝑ ſe cauſat̉ a forma ſubiecti ſui. vn̄ ſi luxin aere eēt accidens cauſaret̉ lux vera aforma aeris qd̓ eē nō pōt. Preterea luxmutat ſubiectū ſuū. Qd̓ ptꝫ qꝛ lux ē naturalit̓ priꝰ in oriente. ꝯſeq̄nt ꝟo in occidēte. ⁊ luxoriētalis generat ꝓximā ſibi⁊ ita deinceps vſqꝫ ad occidēte. Accidentia eī nō ꝑmutāt ſuuꝫ ſubiectū nec extraillud agūt. ex quo vid̓r ꝙ lux nō ſit accidēs. Preterea ſi eēt accidēs aeris neceſſario moueret̉ aer ſubito ab oriēte ī occidentē ẜm ſubitū motū lucis. ſic āt moueri ſubito n̄ ꝯuenit aeri nec alicui elemēto. Preterea luce nihil ē nobiliꝰ. accidēsaūt eſt ignobiliꝰ ſubſtātia. Ex quo videt̉ꝙ lux n̄ ſit accidēs. cū aerloge ſit ignobilior ip̄a luce. Sed ſi lux ē corpꝰ difficile ēintelligere qͣlit̓ lux ſit ī aere vl̓ cū aliquocorꝑe diaphanc vt ī criſtallo. cū duo corpora ſil̓ nō pn̄t eē ī eodē loco. Nō ē tn̄ incōueniēs nec impoſſibile ponere lucē eēſubſtātiā corꝑeaꝫ. ⁊ eſſe ſil̓ cū aliquo corpore. videmꝰ ei aquā ⁊ cinerē ꝑiter iūgi ⁊miſceri ſalua vtriuſqꝫ corꝑeītate ⁊ localitate vtriuſqꝫ ſuꝑficiē ab alio diſtinguēte ⁊ vtriuſqꝫ ꝑtes infra ꝓpriā ſuꝑficie cōtinēte. Quātūcūqꝫ eī ſimul īmiſceāt̉ cinis ⁊ aqͣ ꝑmanet tn̄ aqͣ in ſua corporeitate ꝑ ꝑtiū ſuaꝝ coherentiā ⁊ ꝯtinuitatē. ⁊cinis ī ſua necꝓpt̓ iſtā ꝯmixtōꝫ ⁊ vnionēſimul ſūt duo corꝑa in vno loco īmo aqͣhabet ſuū locū ꝓpriū ⁊ cinis ſuū. Sic luxpoteſt eē in aere vel ī quocūqꝫ alio corꝑtalua vtriuſqꝫ corporeitate. ⁊ ſuarū ꝑtiūſubſtātialiū ꝯtinuitate. Un̄ ⁊ lux ſubintras ad interiora aeris vel criſtalli hꝫ ſuum locū ipſiꝰ ſuꝑficiē ambiētē ⁊ a ſubſtitia adiūcti ſibi corꝑis diſtīguētē. qͣꝫuisnō poſſit ꝓpt̓ ſimplicitatē ſue ſubſtātie recte ꝑcipi vel videri ī re. īmo qd̓ mirabiliꝰeſt multe luces ꝑiter ꝯcurrētes imꝑmixte ⁊ tn̄ vnite ꝯiungunt̉. ſalua cuiuſlibetſubſtātiali forma q̄ ab alia differt. licetnulla reſpectu alteriꝰ materialis ſit l̓ formalis ſic̄ manifeſte docet ⁊ di. dyoni. i li.de di. no. cuiꝰ hec ſūt ꝟba. Lumīa inqͥt lāpadaꝝ cū ſint ī domo vna tota inuicētotis ſunt cōia. diligentē tn̄ hn̄t a ſe inuicem diſcretōeꝫ. vnita diſcretōe ⁊ vnitate diſcreta. videmꝰ enī multis ad vnū lumen accēſis lāpadibꝰ iuxta oīm lumīavnā claritatē ⁊ indiſcrete relucentē. necpoterit qͥs vt arbitror alicuiꝰ eoꝝ ab alijsex aere ꝯtinēte ceterā dū ſimul ſunt ibiſeq̄ſtrare aūt alterū ſine altero cernere.totis incōfuſe inuicē ꝯtꝑatis. Subducta aūt vna ſimul ⁊ ꝓpriū lumen receditnihil ſecū ceteroꝝ luminū auferēs aut d̓ſuo aliqͥd eis relinquēs. Erat eī oīm vtdicta ē ꝑfecta vnitas naturalit̓ ꝑmixtaet nulla ꝑte ꝯfuſa. q̄ ſi tāta eſt in hoc corporali aere ⁊ materiali lumīe ⁊cͣ. Hucuſqꝫ dyo. In quibꝰ ꝟbis manifeſte docetlumīaria ſimul vniri. ſalua tn̄ cuiuſlibetꝓprietate ſubſtātiali ⁊ accidētali qͣs deferunt ſecū. ſiue accedēdo ſiue recedendo.Lux itaqꝫ ẜm dyoni. ē ſubſtātia in ſe ſiſtens a qua ꝓcedit irradiatio quedā ⁊ illumīatio corpoꝝ alioꝝ. ſemꝑ eī lucet luxin ſe. ⁊ tamē nō ſemꝑ illumīat ſed ſolumqn̄ inuenit corpꝰ habēs materiā diſpoſitam ⁊ aptā ad illumīationē. vt di. augu.Subſtātīā enī celoꝝ eſt vere lux q̄ in corporibꝰ obtinet primū locū. Et tamē celūnon illuminat in tenebris vel in nocte.Semꝑ ergo lux lucet inuiſibilit̓ ⁊ in tenebris. ſed nō ſemꝑ illumīat viſibilitervnde virtuteꝫ lucis ſentit oīs creatura:Inuiſibiliter enī oꝑat̉ virtus lucis ſenſum et motū in animalibꝰ vt dicit̉ in li.fontis vite. Dicit etiā albu. in li. de iudicijs aſtroꝝ ypocratē dixiſſe et docuiſſe.ꝙ niſi ſtellarum lux de nocte ſubtiliaretdenſitatē aeris deſtrueret̉ omne corpus