Bui ?4 Div. Veg. Phys. & Patn.. U. S. Dept, of Agriculture. 



Plate II. 



Fig. 1.— Wheat Fields of the Red River Valley, near Grand Forks, in. Dak. 



(Original.) 



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Fig. 2.— Self-binders at work near Grand Forks, N. Dak. (Original. 



