EXPERIMENTAL STUDIES ON THE DEVELOPMENT OF THE EYE. W. H. Lewis. 



PLATE L 



-7^ 



*4l 







El. ^' , ■ ■ "*■* 'IV 



a" -% ' :, /♦'•-'■ ^ 



^^'.. /I .H/, •<. 

 2 



^ 



JMMMMIi y il ll l|M 



' J^^^ 







The Journal of Experimental Zoology, vol. ii. 



