Fig. 1 Exp. C. Regeneration of the lens from an iris flap. The lens vesicle 

 is formed anteriorly. No sign of regeneration at the shortened iris edge. X 80. 



Fig. 2 Exp. D. Regeneration of the lens from the cut edge of the iris. The 

 lens vesicle is formed from the cut edge, while the iris flap remains unchanged. 

 X 80. 



Fig. 3 Exp. A. Regeneration of the lens from a piece of the iris trans- 

 planted to the chamber. X 80. 



Fig. 4 Ex]). ('. Regeneration of the lens from a piece of the iris trans- 

 planted to the retina. X SO. 



402 



