PI. I. 



Fig. I. Back of Axel B.'s iris atter exsection of the lens and its capsule. The light spots 

 are places where the instruments have injured the pigmentary layer. X 73. 



Fig. 2. Back ol" a normal iris tVoni a man of 63. x 13. 



Fig. 3. General view of Axel of B.'s iris. The arrow shows the place where one of the 

 "long" connecting fibres between the sphincter and the dilatator has drawn the 

 iridian epilheliiun a little forward in a duplicature. 



