304 



Jack Myers 



10 



ANACYSTIS Xr 700m/i 

 X2=620m/i 



CHLORELLA X,= 710m/x 

 X2= 650 m/i 



Fi^ lA 



50 



P /P 



'2 1 



100 



15 - 



125 - 



1 



025 



R/R 



5 



Fig. 1. Enhancement, Ei at Xj_ (a) and Eg at X2 (b), vs. intensity 

 of complementary wavelength expressed, as Pa/pi or Pi/pg- 

 Data for Chlorella were obtained from thin films of low 

 absorption; data for Anacystis were taken from experiments 

 with thick films of high absorption. 



