240 



EXPERIMENT STATION. 



[Jan. 



Set Numbers. 



Time of exposure, 

 Length of exposure, . 

 Temperature (degrees) , 

 Iluniklity (degrees), . 

 White Spiue, 

 Hotliouse, . 



Experiment XXV, 



Cloudy Night Exposures w'ltli Plants of Various Ages, May 6, 

 Nov. 19, 1007; April £7, 1908. 

 Eiimigation with .01 gram KCN per cubic foot; no sun- 

 light any of the days when treatment was given; conclusions 

 drawn after one week. 



ExrERIMENT XXVI. 



Cloudy Night Exposures iriiJi. Stronger Fumigation, May 10, 



1907; April 27, 1908. 



Fumigation with .015 gram KC-N per cubic foot; plants 

 of fii'st five sets, two weeks old ; of sixth set, sixteen <lays old ; 

 amount of sunlight the day of treatment of the first five sets, 

 7.4 hours; iK>t taken for the sixth set; conclusions di-awn after 

 one week. 



