MORE SQUIRRELS 



to fly, it seems able to distinguish pretty clearly 

 objects several rods away. Its eyes are unusually 

 large and prominent and perfectly black, and its 

 fur is of much the same quality as chinchilla, 

 and of even softer tints. The flying mem- 

 brane consists of a thin strip of skin stretched 

 between the fore and hind legs and furred above 

 and below. A slight cartilaginous support runs 

 back from the wrist, assisting to extend the mem- 

 brane when the fore legs are spread apart as in 

 flying. The tail probably serves both as para- 

 chute and rudder, since it is thin and flat but of 

 such a close, silky texture as to catch the wind 

 like a sail. 



I am not even sure just what the track of fly- 

 ing squirrels looks like, though I frequently run 

 across a track which I suppose to belong to 

 them, as I know of no other animal that could 

 very well make it. But if it really is a flying 

 squirrel track, then they are in the habit of being 

 out on the snow in mid-winter much more fre- 



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