467 
Influence of Carbon Dioxide. IV. 
Text-fig. 2. 
Table IX. 
Exper. 1. Passage of Carbon Dioxide into the Seed . 
Ten inhibited seeds showing secondary dormancy compared with ten 
normal seeds fully swollen after one day on wet sand. The outer testas 
were removed in both cases. 
Time. 
Mercury rise in millimetres. 
Inhibited seeds. Non-inhibited seeds. 
6 min. 
33 
33 
11 „ 
38*5 
39 
16 „ 
4°‘5 
41 
60 „ 
5 2 
54 
3 krs. 
59 
61 
17 ^ »> 
94 
89 
Table 
X. 
Exper. 2. Passage of Carbon Dioxide out of the Seed . 
The same seeds as in the above experiment, the carbon dioxide being 
displaced by a current of nitrogen after seventeen and a half hours. 
Mercury fall in millimetres . 
Time. 
Inhibited seeds. 
Non-inhibitt 
5 min. 
8*5 
8*5 
10 „ 
12-5 
13*5 
16 „ 
i 4*5 
16*5 
30 „ 
16 
21 
50 » 
1 7 
24 
80 „ 
20 
32 
