Bul. 502, U. S. Dept. of Agriculture. PLATE VIII. 
Fic. 1.—PRIOR TO DRAINAGE, ORCHARD WAS DYING AND LAND Now IN ALFALFA WAS 
BARREN. 
Fic. 2.—DRAINED SHALE LAND UNDER CULTIVATION. 
RESULTS OF PROPERLY INSTALLED DRAINS ON SHALE LAND. 
