Bui. 71, U. S. Dept. of Agriculture. 





Plate 1. 





ITU 



11 



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Fig. 1.— Apron-Traction Ditcher Cutting Lateral Ditch on Area No. 3, 



Raceland, La. 



Fig. 2.— Pumping Plant (Under Construction) on Area No. 5, Des Allemands, La. 



