230 



EXPERIMENT STATION. 



[Jan. 



light the day of fumigating first two sets, seven hours; on day 

 of fumigating the other three sets, none ; conclusions drawn after 

 one week. 



Experiment V. 



Cloudy Day Exposures with Older Plants, April SO, May 3, 6. 

 Fumigation with .015 gram KCN per cubic foot; amount 

 of sunlight April 30, six hours ; May 3, seven hours ; May 6, 

 none ; plants of sets 2 and 5 watered the day before treatment ; 

 conclusions drawn after one week. 



Experiment VI. 

 Cloudy Day Exposures with Stronger Fumigation, May 16. 

 Fumigation with .02 gram KCN per cubic foot; plants 

 nine days old; amount of sunlight the day of treatment, four 

 hours; plants watered the day before treatment; conclusions 

 drawn after one week. 



