Bui. 304, U. S. Dept. of Agriculture. 



Plate VI 



Fig. 1.— Rear of Pumping Plant, Louisa-Des Moines Drainage District, Showing 



Suction Pit. 



Fig. 2.— Wooden Forms for Concrete Suction Pipes for Pumping Plant on 

 Muscatine-Louisa Levee and Drainage District. 



