11)10.1 



PUBLIC DOCUMENT — No. 31. 



241 



Set Numbers. 



2 



Time of exposure, 

 Length of exposure, . 

 Temperature (degrees), 

 Iluniklity (degrees), . 

 Wliite Spine, 

 Hothouse, . 



7.10 

 10 m. 



(i't 

 79 



N 

 N 



7.40 

 20 ni. 

 01 



N 

 N 



8.15 

 30 ni. 



57 

 83 



N 

 N 



9.00 

 45 ni. 



57 



78 



N 

 N 



10.00 

 Ih. 

 55 

 84 

 SI 

 SI 



9.10 



2h. 



72 



93 



BB 



BB 



Experiment XXVIL 

 Cloudy Night Exposures with Older Plants, April 16. 

 Fumigation with .015 gram KCN per cubic foot ; plants 

 five weeks old; amount of sunlight the day of treatment, 11.5 

 hours : conclusions drawn after one week. 



Experiment XXVIII. 



Cloudy Night Exposures with Plants of Various Ages, April 

 25, May 13, 28. 

 Fumigation with .015 gram KCN per cubic foot; dim moon- 

 light during treatment of the first three sets ; conclusions drawn 

 after one week. 



