32 



Roots 24 hrs. in solu- 

 tions of strength meas- 

 ured by freezing points 

 given below 



Date 



Tem- 

 pera- 

 ture 



Num- 

 ber of 

 Leaves 



Percent- 

 age 

 Killed 



Percent- 

 age 

 Killed 

 and 

 Partly 

 Killed 



KALE 



Cane Sugar (.677). . . 

 Glycerine (2.820).... 

 Potassium Chloride 



(.775) 



Ammonium Chloride 



(.360) 



Water 



Cane Sugar (.677)... 

 Glycerine (2.820).... 

 Potassium Chloride 



(.775) 



Ammonium Chloride 



(.360) 



Water 



June 

 June 



25/13 

 25,'13 



June 25/13 



June 

 June 

 July 

 July 



25,'13 



25,'13 



9,'13 



9,'13 



July 9,'13 



July 

 July 



9,'13 

 9/13 



-3.0 

 -3.0 



-3.0 



-3.0 

 -3.0 

 -1.5 

 -1.5 



-1.5 



-1.5 

 -1.5 



0.0 

 20.0 



60.0 



80.0 



80.0 



40.0 



0.0 



0.0 



60.0 

 60.0 



Percent- 

 age total 



leaf 

 surface 

 killed 



45.0 

 35.0 



80.0 



95.0 

 93.0 

 45.0 

 10.0 



20.0 



80.0 

 75.0 



LETTUCE 



Cane Sugar (.677)... 

 Glycerine (2.820).... 

 Potassium Chloride 



(.775) 



Ammonium Chloride 



(.360) 



Water 



Cane Sugar (.677) . . . 

 Glycerine (2.820).... 

 Potassium Chloride 



(.775) 



Ammonium Chloride 



(.360) 



Water 



Cane Sugar (.677)... 

 Glycerine (2.820).... 

 Potassium Chloride 



(.775) 



Ammonium Chloride 



(.360) 



Water 



July 

 July 



July 



July 

 July 

 July 

 July 



July 



July 

 July 

 July 

 July 



July 



July 

 July 



