Bui. 126, U. S. Dept. of Agriculture 
Plate VII. 
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Fig. 1.— Preparing Earthen Canal Sections for Concrete Lining, Northern 
Pacific Irrigation Co., Kennewick, Wash. 
Fig. 2.— Setting Forms Preparatory to Construction of Concrete Lining, 
Northern Pacific Irrigation Co., Kennewick, Wash. 
Fig. 3.— Section of Concrete-Lined Canal, Northern Pacific Irrigation Co., 
Kennewick, Wash. 
