io8 



S. t^cliijraina. 



Average of three parallel pots. 



The adjoining Plate xxv, Fig. i (photogr. May 12) shows the difference 

 in development. The ears appeared gradually, about two weeks passing 

 between the earliest and latest sproutings ; the differences will be seen 

 from the foUowincf table : 



Average of three parallel pots. 



The plants were harvested June 10, and weighed in the air-dry state 

 with the following result, g. : 



