NO. 3 RESPONSE OF ALGAE TO ULTRAVIOLET MEIER 



Tahle 2. — Irradiation Data for Second Experiment 



Irradiation time. 



Table 3. — Intensity Data 



August 23, 19.^2 April 17, 1933 



Plates 1-13, Plates 14-24, 



intensity: intensity: 



A ergs/sec. cm^ ergs/sec. cm- 



2536 less than 100 150 



2652 2,000 1,960 



2699 680 640 



^753 570 540 



2804 1,930 1,840 



2894 930 930 



2925 450 440 



2967 2,740 2,450 



3022 5,700 5,300 



3130 12,500 11,800 



3340 1,940 1,720 



3650 28,500 25,000 



