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. 



