268 SOILING CROPS AND THE SILO. 



are needed the least, for reasons already given. In 

 a portion of the states which border upon the Mis- 

 sissippi river the harvests are practically rainless. 

 This is true even of the strip of country west of the 

 Cascades in which the precipitation is frequent and 

 almost excessive during the season of growth. In 

 the same area lumber is also very cheap, hence the 

 provision for the storage of crops in the cured form, 

 need not be costly. 



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