Aug. 14, 1916 



Agricultural Value of Impermeable Seeds 



111 



The seeds which were tested in a germinating chamber at 20 C. were 

 previously subjected, either dry or in small vials of water, to a tempera- 

 ture of about — io° C. One lot of each sample was given this treatment 

 for 9 days and another lot during two periods of 9 days and 16 days, 

 respectively, with an intervening period of a few hours in the laboratory 

 at ordinary room temperature. As one exposure to this temperature 

 had practically the same effect as two such exposures, only the average 

 results of the tests of the two lots are herein considered. 



Table VIII. — Germination of impermeable leguminous seeds with and without freezing 



52170°— 1G 2 



