Artificially Produced Cyclopean Fish 



3^7 



Fig. 28 A trans-section through the optic outpushings of a normal forty-one hour embryo. The 

 brain is solid and cavities are just forming in the optic outpushings. 



Fig. 2.9 Trans-section through the single optic vesicle (o/).t).) of a forty-one hour embryo from -qq m 

 MgClg. The optic process is situated laterally and no indication of a like process exists on the 

 other side. 



Fig. 30 A slightly oblique section through the cyclopean optic vesicle of a forty-nine hour embryo 

 from 3^0 M MgClo, op.v. optic vesicle. 



Fig. 31. Cross section through double cyclopean eye of fifty-four hour embryo from ot m MgCb, 

 op.c. optic cup; L, lens thickening of ectoderm; Br, normal bilateral brain. 



Fig. 32 Section of single cyclopean eye in similar embryo. L, lens; op.c. optic cup, small sohd 

 diencephalon above; X, guide figure indicating the plane of the sections. 



