STIMULATION IN THE LEAVES OF DIONAEA 
71 
Table II 
Percentage of Increase with Leaf Closure, in Distances Between Adjacent Dots on the 
Lower Surface of Dionaea Leaves, the Dots Arranged in a Line Transverse to 
the Midrib 
Experiment No. 
Expansion, ist 
Closure 
Expansion, 2d 
Closure 
Expansion, 3d 
Closure 
10,0 
15.0 
0.0 
\h 
2.2 
10.6 
3-7 
I c 
26.1 
13-3 
2.9 
\d 
13.3 
2.8 
5-5 
[e 
5-3 
2.5 
Between extreme dots 
13.0 
9.0 
3-2 
Experiment No. | Expansion 
Experiment No. | Expansion 
2 < 
{ a 
h 
Percent 
4.8 
7.7 
9-5 
6.0 
3.8 
3 < 
fa 
Percent 
0.0 
3-2 
4.8 
h 
d 
c 
^d 
e 
Between extreme dots . . . 
6.7 
Between extreme dots. . 
4.9 
4 
{a 
8.0 
5-9 
II. 8 
9.4 
5 
[a 
12.5 
15-8 
11.6 
10. 1 
0.0 
h 
h 
c 
c 
d 
d 

Between extreme dots. . . | 8.7 
Between extreme dots. . 
10. 0 
6 < 
[a 
1.8 
4.8 
3-8 
2.6 
7 ' 
{a 
h 
3-3 
8.4 
3-7 
1-5 
1.2 
h 
c 
c 
d 
d 
e 
Between extreme dots. . . | 3.3 
Between extreme dots. . 
3.9 
8. 
0.0 
30.0 
3-3 
9^ 
f« 
3.4 
13.6 
2.8 
::::::::::::::::::: 
h 
[c 
Between extreme dots ... | 5.7 
Between extreme dots. . 
5-7 
The results of measurements similar to those just described, made 
on the upper leaf surface, are given in Table III, which also gives 
percentages of decrease in the distances between the dots during 
closing and of increase during opening, as compared to the original 
distances. 
