130 



BOTANICAL GAZETTE 



[august 



ments 



more prom 



among the freshest seed, the other seeds lagging more and more 

 according to their ages. In 24 and 48 hours marked differences in 

 viablility are indicated in the flasks which did not appear in the 

 seed beds until 72 hours had elapsed. 



In order to test the quality of flask no. 5, which had been used 

 in the preceding experiment with seed not the freshest, we set up 



experiment in the same 



material from 



the best in this flask. 



presum 



temperature 



periment 



From 



we can only infer the inferior quality of this particular flask. The 

 data are given in table XX. Except for the behavior of this par- 

 ticular flask, this experiment conforms to the rule which the pre- 



nam 



the most vigorous. 1 

 tions in the seed bed. 



confirmed still further by the germina 



TABLE XX 



Date 



February 



*5 



16 

 16 



17 



17 



17 



18 



18 



19 



20 



20 

 21 

 21 

 22 



Time 



Room 



1907 



1908 



1909 



1910 



1911 



1 2 : 00 p.m. 



4:00 P.M. 

 9:00 A.M. 

 5.OO P.M. 

 8:30 A.M. 

 12:00 M. 

 4:30 P.M. 

 8:30 A.M. 

 4:00 P.M. 

 8:30 A.M. 

 4:30 P.M. 

 9:00 A.M. 

 6:30 P.M. 

 8:30 A.M. 

 4:30 P.M. 

 9:45 A.M. 



17 

 17 

 17 

 17 

 17 

 17 

 17 

 17 

 17 

 17 

 17 

 17 

 17 

 17 

 17 

 17 



sc. 



I 

 I 

 I 

 I 

 I 

 I 

 I 



I 

 I 

 I 

 I 

 I 

 I 

 8 

 I 



6?8C. 

 6 



Increase in temperature between 

 first and highest readings . . . 



7 



7 



7 



7 



7 



7 



7 



7 



7 



7 



7 



7 

 8 



7 



9 

 o 



3 



3 



4 



S 

 6 



7 

 7 



75 



8 



8 



4 



7 



i6?8C. i6?8C. 



16.9 

 17. 1 

 17.2 



17 3 



17 3 

 17-4 



175 



17 55 

 17.7 



17.8 



18.0 



18.2 



18.4 



18.4 

 18.5 



16.9 

 17.2 



17-3 

 17.6 



1765 



17.7 



18. 1 



18.3 



18.8 

 19.0 



19 -5 

 19.7 



19.8 



19.8 



19.8 



i6?8C. 

 17.0 



17-3 



17-5 

 17.9 



18.0 



18. 1 



18.7 



19.0 



19.7 



20.0 



20.4 



20.4 



20.4 



20.4 



20.2 



6?4C. 



6-5 

 6.7 



6.8 

 7.0 



705 



7-i 



7-4 

 7.6 



8.0 

 8.2 



8-7 

 8.8 



8.8 



8.8 



8.8 



i?o 



*°7 



3?o 



3-6 



2?4 



A series of 



niformly 



also including 



5 years, but 



XXI 



