64 
FIRST BOOK. 
tunnels in the ground, and in doing so they make 
the soil loose^ and bring some of it out to the 
top. They carry in leaves, seeds, tiny pieces of 
wood, and other things which, in time, rot into 
fresh earth. 
Ants. 
8. In the woods fallen trees are hollowed out by , 
millions of those silent little workers. Then such 
trees soon decay, and their remains become mixed 
with the soil from which other trees will grow, i 
9. You know that when men dig the ground 
they bury the top soil with the leaves or deadj 
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