Bul. 300, U. S. Dept. of Agriculture. PLATE XIII. 
D-3079 
Fic. I.—BUILDING A LEVEE BY MEANS OF STAGGERED SLOPE BOARDS. 
D-3080 
FiG. 2.—HYDRAULIC DREDGE BUILDING LEVEE. 
D -3077 
Fig. 3—A TYPE OF CUTTER HEAD USED ON THE HYDRAULIC DREDGE. 
