244 



EXPERIMENT STATION. 



[Jan. 



EXPEKIMENT XXXIII. 



Cloudy Night Exposures until Older Plants, Aj)ril 10. 



Fumigation with .03 gram KCX per cubic foot ; plants 

 thirty-eight days old ; amount of sunlight the day of treatment, 

 four hours; conclusions drawn after one week. 



EXPERIMEKT XXXIV. 



Cloudy Night Exposures with Strong Fumigation, March 23. 

 Fumigation with .Oi gram KCX per cubic foot ; plants 

 eleven days old ; amount of sunlight the day of treatment, ten 

 hours ; conclusions drawn after two weeks. 



Experiment XXXV. 



Cloudy Night Exposures ivith Electric Light, April 29. 

 Conditions in this series of experiments Avere about like 

 those of the preceding set, except that a 10 candle-power in- 

 candescent bulb hanging near the fumigating box was left 

 turned on during the exposures. 



