Bui. 121, Forest Service, U. S. Dept. of Agriculture. 



PLATE III. 



FIG. 1. A " BLOW-OUT" IN THE NORTHWEST FACE OF A HILL. 



FIG. 2. SAND-HILL WILLOWS ON MOIST NORTH SLOPES WHERE PLANTING is MOST 

 SUCCESSFUL AND EVEN DIRECT SEEDING is POSSIBLE. 



