The Flying Squirrel 



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and from the summit of a tree springs lightly into the 

 air, and then glides silently away, always in a slightly 

 descending direction, until a movement, probably of 



Flying Squirrel 



both body and tail, inclines it upward, and it alights 

 gently upon the object for" which it set out. The tail, 

 being thin and flat with closely set silken hairs, prob- 

 ably serves a double purpose on these short flights, — 



