1060 



THE LIGHT FACTOR. 1. INTENSITY 



CHAP. 28 



100 



i TO 

 o 



5 60 



S 50 



^ 40 

 u 



g 30 



o not inhibited 



A 005 ml.0.03%KCN/ml. 



I'll 



♦ 1.6x10* 



INTENSITY, erg/cm.2 sec. 



Fig. 28.41. Influence of cyanide on fluorescence of 

 chlorophyll in Chlorella suspensions (after Wassink, 

 Vermeulen, Reman and Katz 1938). 



TIME, mm. 



Fig. 28.42. Fluorescence-time relation in air as function of inhibition of photo- 

 synthesis by cyanide (after Wassink and Katz 1939). Parameters are perceotage 

 KCN in solution from which 0.1 ml. was added to 2 ml. of cell suspension (29° C). 



