166 ANTS AND CHILDREN OF THE GARDEN 



crater back to the door and dropped it down the stairway, 

 as if trying to fill the room with it. 



FLORENCE. Yes, and in doing so they showed us one' 

 way that umbrella-shaped craters are made. Figures A, 

 B and C show the different shapes the crater took as it 



TOADSTOOL OR UMBRELLA 

 SHAPE 



Craters of Garden Ants. 



