PERMEABLE AND IMPERMEABLE SEEDS 79 

 kernel and its coverings behave in a similar manner. (For 

 convenience I have also added under C the average result 

 of all my experiments.) 



Effect on the Absorptive Capacity in Air of Exposure to a 

 Temperature of roo° to 105° C. for iJ to 2 Hours in the 

 Case of broken Seeds of Guilandina bonducella. (Results 

 stated in percentages.) 



Three broken seeds, kernels and coats mixed together, originally weighing 

 12$ grains. » / i. & 



Original weight. , 



Weight after the 

 oven test. 



93 "6 



Subsequent weight after 

 four days in air. 



"S'3 



Seed-coats and kernels treated separately, the true mixing of the samples 

 being secured by dividing the seeds between them. Three seeds weighing 

 106 grains were used. 



Materials. 



Coats 

 Kernels 



Original 

 weight. 



100 

 100 



Condition of experiment. 



Reduced to 9Z'4 after exposure 

 in oven to ioo-ro5° C. 



Not heated 



Reduced to 95*8 after exposure 

 in oven to 100-105° C. 



Not heated 



Subsequent 



weight after 



four days in air. 



"3"3 



IIZ'O 



irs's 



Il6'2 



Average results of all experiments on the absorptive capacity in air with and 

 without previous exposure to a temperature of 100-105° C. in the case of the 

 kernel and coats together. 



Original weight. 



Absorptive capacity in air. 



Avers^e of eleven 



experiments without 



heat. 



rii-5 



Average of five experiments 

 with' previous exposure 



