Bui. 316, U. S. Dept of Agricultur 



Plate IX. 



Fig. 1.— Willows Coming in Naturally and Gradually Binding Together the 

 Shifting Sand Dune. Near Michigan City Ind. 



Fig. 2.— Willows and Poplars Working Down to the Edge of Lake Michigan. 



Michigan City, Ind. 



WILLOW AS A SAND BINDER. 



