Bui. 475, U. S. Dept. of Agriculture. 



Plate I. 



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Fig. 1.— Jack Pine Planted on Nebraska Forest, April, 1911. Photographed 



May. 1914. 



Fig. 2.— Portable Field Camp on Nebraska Forest Providing Accommodations 

 for 34 Horses and 50 Men. This Camp is Moved Every Two Years. 



