The Maximum Efficiency of Photosynthesis 



123 



This experiment is remarkable for the low average figure of 2.5 obtained in a 

 very good experiment. The only deviating reading among 20 readings is the one 

 marked by*. 



Experiment 6 



June 14, 1949 



Culture medium, pH 5. Gas phase 5% CO? in air. 280 cu. mm. of cells in each vessel. 

 Both vessels continuously illuminated with white light for 27 hr. 



AJ =-- 5.4 



No. 5 



No. 3 



v == 13.913 

 k'o 2 = 0.665 



vf = 7.00 

 £'co 2 = 1.253 



v = 17.993 



&o 2 



1.046 



W = 7.00 

 k C o z = 1-634 



I. Beginning of measurement 

 June 14, 1 :30 p. m. 



70' ff + 24.6 



jyo 2 + 91 cu. mm. | 

 ycoz — 103 cu. mm. j 



1.13 



\ A3 x 70 

 " 91 



4.2 



II. Start of 2nd measurement 



June 15, 9:40 a. m. 



