Artijicially Produced Cyclopean Fish 



309 



Fig. 33 Almost horizontal section through a double cyclopean eye of a fifty-four hour embryo in 

 ■5^ M MgC]2. See guide figure X for plane of section. A'/)., nasal plate; L, lens; op.c, optic cup; 

 Tc, telencephalon; Mb., mid-brain. 



Fig. 34 Sagittal section (guide figure T) through typical single cyclopean eye showing its ventral 

 position below the diencephalon Dc. The nasal pit,Np. is median; L, lens; op.c. optic cup; Tc, 

 telencephalon; Mb., mid-brain. 



