Plictograp/i by A. tl. Barnes 



BIG TREES IN RAINIER NATIONAL PARK 

 After all, it may be the big tree that will explain one of civilization's greatest mysteries. Under the 

 scientists' micrometer it is telling us of striking fluctuations of climate in bygone ages, and introducting 

 a new factor in that most profound and far-reaching of the problems of history — the cause of the rise and 

 fall of nations. 



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