Bul. 300, U. S. Dept. of Agriculture. PLATE XIV. 
; D-3088 
Fic. |.—-DISCHARGE PIPE OF HYDRAULIC DREDGE SHOWING MATERIAL | 
PASSING THROUGH OPENINGS iN BOTTOM OF PIPE. 
—— 
—~ 
D-2084 
D-3083 
Fic. 38.— RELEASE VALVE IN DISCHARGE PIPE. 
