338 



THE EYE IN EVOLUTION 



Fig. 



400. — The Ciliary Region of the Frog, i?.i.v.^ ( X 126) (Norman 

 Ashton). 



Fig. 401. — The Ciliary Region of the Frog, Rasa. 



A I'adial section through the inferior part of the eye. c, cornea ; cp, ciliary 

 process ; cz, cihary zone ; ha, hyaloid artery penetrating the region of the 

 foetal iissure ; pi, protractor lentis muscle ; tc, tensor choroidese ; vs, ciliary 

 venoi' inus ; sc, sclera ; z, region of zonular attachment (Rochon-Duvigneaud, 

 Les J • et la Vision des Verfebres, Masson et Cie, Paris). 



