UNDER THE APPLE-TREES 
should be asked that could not be answered by the 
propounder, 
“How is it,’ said one, “that a chipmunk digs a 
hole without throwing out any dirt?” 
“You can’t answer that yourself,” said the other. 
“T can; he begins at the other end of the hole,” 
replied the first. 
“How does he get to the other end?” asked the 
second. 
“You must n’t ask any question that you can’t 
answer yourself.” 
It is certainly true that in such cases the chip- 
munk did begin at the other end of his hole, but that 
end must be somewhere on the surface of the ground. 
In all cases, whether there is a pile of earth or not, 
the hole is cut up through the turf from beneath, 
and hence all the soil must have been removed back 
along the tunnel and out at the entrance. We often 
see the same thing in the procedure of the wood- 
chucks — the large pile of earth at the mouth of the 
main entrance and another hole a few yards away 
which has been cut up through the turf from below. 
The woodchuck makes no effort at concealment as 
does the chipmunk, but apparently aims only at 
convenience and safety. But how the squirrel can 
dispose of a bushel of soil and leave no trace is a 
problem. The mystery of the large stones was soon 
made clear; they did not come out of the neat, round 
hole in the turf through which the squirrel enters or 
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