in I cm II I 



molecular 



layer 



K<nii;lio)iic 

 layer 



Fig. 5. The nuclei of the ganglionic layer of a 3ôlh 

 day frog embryo. Note that their cytoplasmic investments 

 are still extremely scanty. Two fibres of Miiller are seen 

 traversing the internal molecular layer. X2250. 



