1010. 



PUBLIC DOCUMENT — No. 31. 



237 



ExPEKIMENT XIX. 



Siarliglit XigJif Exposures untJi Stwnger Fuynigatlon, May 17. 

 Fumigation with .02 gram KCN^ per cubic foot; plants 

 ten days old; amount of snnlight the day of treatment, 2.3 

 hours ; night slightly hazy, with the moon in the first quarter ; 

 conclusions drawn after one week. 



EXPEKIMENT XX. 



Slnrliglit NigJif Exposures ivith Older Plants, April IS. 



Fumigation with .02 gram KCN per cubic foot; plants 

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

 twelve hours; slightly cloudy just at the l)eginning of the ex- 

 periment ; conclusions drawn after one ^veck. 



