174 The Flying Squirrel 
a hole in one end of the cage, then through another 
hole in the end of the wheel, the holes being about 
two inches in diameter. By means of a light weight 
on one side, the holes were opposite only when the 
wheel came to rest. During its rapid revolution by 
one of the squirrels, the other would pass in and out 
with perfect ease. This is most wonderful, as it could 
have been but a fraction of a second when there was 
sufficient space for the squirrel to pass. Yet I never 
knew of either of them being caught. 
For two years the squirrels occupied the cage, and 
then other quarters were made for them in a tree 
near the house. There they remained during the 
spring and summer, but as the nutting season came 
the forest depths proved irresistible, and our little 
friends vanished into its enticing shade. 
