1910.] 



PUBLIC DOCUMENT — No. 31, 



245 



Fuiiiiiiatioii willi .01 iiraiu KCX per ciiliic foot; plants 

 thirty-seven days old; amount of sunligfit the (hiy of treat- 

 ment, 4.G hours; conclusions drawn after one week. 



Experiment XXXVI. 



Chnulij XiyJtt E,vpusures witJi Electric Light, Stronger Fiuni- 



gation, May 2. 

 Fumigation with .015 gram KCN per cubic foot; plants 

 seven weeks old ; amount of sunlight the day of treatment, 

 8.2 hours; conclusions drawn after one week. 



Set Numbers. 



Time of exposure. 

 Length of exposure, . 

 Temperature (degrees). 

 Humidity (degrees), . 

 White Spine, 

 Hothouse, . 



8.00 

 10 m. 

 65 

 85 

 X 

 X 



9.45 

 45 m. 

 59 

 83 



SB 



SB 



Experiment XXXVIL 



Cloudy Night Exposures witli Electric Lights, Still Stronger 

 Fumigation, May 7. 

 Fumigation with .02 gram KCX per cuhic foot ; ]ilants 

 seven weeks old; amount of sunlight the day of treatment, 

 n.l hours; rather . cloudy and with a heavy mist during the 

 treatment of the first three sets; cloudy during the last two 

 treatments; conclusions drawn after one week. 



