556 



,:| 



Plate I — A and B: Dichroism of Euglena Chloroplasts at 695 m/i; C and D: 

 Bifluorescence of Euglena chloroplasts excited by unpolarized 436 m/i 

 and observed at 720 m/z; E and F: Bifluorescence of Euglena chloro- 

 plasts excited by polarized ruby laser light (694.38 m/i) and observed 

 at 720 m/i. 



