ARISTOTLE 



780 b 



ylvovrai, ovrtos koL iv rfj Kadapd oijjeL Kal at 

 /jitKpal KivT]CT€LS SrjXai /cat TTOiovcnv aiadrjcnv . rod 

 Se TO. TToppcodev opdv /cat rriv aTTO rcbv TToppcodev 

 35 oparwv d(f)t,KveiadaL Kivqcriv rj deais atrta rcvv 

 ocfiOaXpLcbv TO, pLev yap i^6(f>daXpLa ovk eua>7ra 

 781 a TToppoidev, ra 8' ivros e^orra rd o/M/xara ev KotXcp 

 /cet/xeva opariKa roiv TToppiodev Sia to rqv KLvqaiv 

 pi-q aKeSdvvvaOaL et? d;^av6? aAA' evdviropeZv. ovOev 

 yap Sta^epei to Xeyeiv opdv, cooTrep rives </>acrt, 

 TO) TTjv oi/jiv e^teVat (av yap pbrj rj tl rrpo tcov 

 5 opipLaTCOV, hiaaKehavvvpiivqv dvdyKrj iXdrru) mpoa- 

 TTLTTreLV TOt? opojpievoLs Kal ■^TTov rd TToppcodev 

 opdv), rj TO TTJ aTTO tQ)v 6p(x)pL€va)v KLvijaei opdv. 

 opiOLCOS yap avayKT] /cat ttjv oipiv ttj KLViqaeL opdv. 

 juaAtcrra /xev ovv icopaTO dv rd noppajdev, el (xtto 

 TTJg oi/jeois evdvs avvex'^S rjv rrpos to 6pcop,evov 



10 olov avXos' ov yap dv SteAvero rj KLvrjOLS rj (xtto 

 TCOV opaTcov el he pufj, oacprrep dv errl vXeov e7Te)(rj,^ 

 ToaovTU) aKpi^eoTepov rd rroppwdev opdv dvdyKrj. 



Kat Trjs jxev rdjv opLpLaTCov Sta^opa? eoTOjaav 

 avTai at atriat. 



11 Top' avTov Se Tporrov e)(ei Kal rrepl rrjv aKorjv 

 16 /cat TTjv oa^prjaiv ev fiev yap eoTi tov a/cpt^cDs" 



aKoveiv Kal oacfypalvecrOai to ra? Sta^opa? tcov 

 VTTOKeipLeviov aladrjTcjjv otl jidXiaTa alctOdveadai 



^ i-nixn Piatt : a-nexu viilg. : e^i? Z^. 



" i.e., the substance of the eye. 



* This theory is put forward by Timaeus in Plato, Timaetis 

 45 'B ff. A similar theory seems to have been held by Em- 

 pedocles. 

 504 



