no 



BOTANICAL GAZETTE 



[august 



The first counting was made three days from the time the seeds 

 were planted; the last, six days from that time. In almost every 

 case the 191 1 seeds show the greatest number of seedlings at the 



24 



21 













1 I 



1909 











1 1 













■s. 







































1910 





\°c 











! 



































1 / 1 

























[1909] 



1906 

 1911 

 19051 

 1908 









A \ A 





1910 







_ 





B 













/ 1 











1911 

















* 







[ /V^l 



iqI ^& 

























^ + - 



+^*^ 







^< 



1907 





1 

































1 Room 













1 





Hour 



r 

















Hours 

 ■ 1 



t 









1 



2 





1- 



H 





2 



16 



( 



I 





n 





144 





216 



Fig. 2. — Barley in flasks (experiment II): A, no. 202; 5, Wisconsin 



40 



20 







1 1 







-* 





^ 





1911 

 1909 



i 







4 











1910 























Ho 



i 



urs 



1 1 



72 



144 



40 - « - 



20 - 



I 







-*- 



* 





C 





J ,9n 







JS A 1909 











1910 















//* 



urs 



144 



72 



14* 



Fig. 3.— Barley in soil: A, no. 304; B, no. 294; C, no. 346; Z), no. 202; £, 



Wisconsin. 



first as well as at the last counting, and here also the 1910 seeds 

 show lowered vitality, especially when compared with 1909. In 



age is evident. 



•to 



same 



