INFLUENCE OF CYANIDE ON FLASH YIELD 



1459 



flashes, because the dark intervals within each group were now shorter than 



^EA = IAeaO 



Nonpoisoned 



nUA . ■ 



Poisoned 



Fig. 34.13. Photosynthesis in nonpoisoned state determined by Eb, the average work- 

 ing amount of Eb- Photosynthesis in poisoned state determined by formation rate of 

 A -002 by Ea (except with grouped flashes, where it remains hmited by Eb). Level 

 k[El] is arbitrary; other levels taken from Table 34.III. (— ) effective ceiling on maxi- 

 mum momentary yield; ( + + ) average yield in flashing Ught resulting from this limita- 

 tion; ( — ) "potential ceiUngs" too high to affect the average yield decisively. 



These results and their interpretation are illustrated by figure 34.13. 

 In the nonpoisoned state, the rate is supposed to be determined by the 

 catalyst Eb- In other words, the "ceiling" imposed on the rate by this 



