PKOWSY BATS AND WAKEFUL PORCUPINES. 



73 



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when cold weather "* : v r 



comes that they hang 

 <»fe .Sp themselves np by the 



s* hooks on their wings in 



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», 



4 



■^'■Av 



tit 



looks on 

 caves, and in dark corners of 

 old buildings, until spring; yet a 

 " thawing spell" will often bring 

 them out. I have seen them Hit- 

 ting about in February twilights 

 as gayly as in May. The porcupine 

 a* spends the winter in and about a 

 hollow tree, whence he makes 

 daily excursions in search of 

 food. This consists of buds am 

 bark, that of the ash, hemlock, 

 spruce, and slippery elm be- 

 ing special favorites. " Soiue- 

 m times," says Kennicott, "an 

 individual [porcupine] will 

 strip away sufficient bark to ki 



A a tree i an< ^ '* 1' :1S 1,eu " statu< -' 

 JP that during one winter [in Il- 

 linois] a hundred trees have 



* 



been destroyed by a single 

 a ^'JyxJ^f porcupine ; moreover, that 

 ^■'#4^^* all the young 



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