PLATE -2. 



f<^ 



vr 





-. ^ ^ ^ % K^' 





ii 



--,v :/ai 



Fia. 4. 



Fii,'. 



Figure 4. Normal lens capsular t'pitlK'lium of ral:)bit. Fiat preparation. 

 Photo. X 264. 



Figure 5. Exp. 5.5. Magnetite arc. Single lens system, crown glass 

 screen (295 nix), exposure 1 hour. 



Lens capsular eiiithehum 24 hours after exposure, showing marked abiotic 

 effects. The cells ai'e swollen and most of them contain granules. In the 

 photograph the basojihilic and eosinophilic granules cannot readily be dis- 

 tinguished from each other. Photo. X 264. 



"W /J5P- 





4 



Figure 6. Exp. 67. ALagnetite arc. Double lens system, no screen, 

 exposure 20 minutes, about 200 times the liminal exposure for photophthalmia. 



Lens capsular epithelium 48 hours after exposure, showing marked abiotic 

 effects. The darker granules in the cells are basophilic, the lighter, eosino- 

 philic. The clear spaces in this and the ]irevious figure are due to some of the 

 cells having failed to adhere to the capsule. Photo. X 264. 



812 



