How the Sensitive 
Plant Folds Up 
In this print it 
seen that the sensitive 
plant, at the left, folds its 
leaves into the smallest 
possible compass, making 
itself as inconspicuous as 
possible to an approaching 
enemy. The actual pho- 
tograph was snapped less 
than two seconds after the 
plant had been touched— 
but in that brief time, as is 
shown, the transformation 
was complete. The acacia, 
with its different heredity, 
shows no tendency to fold 
up, even when crum- 
pled in the hand. 
