Bui. 126, U. S. Dept of Agriculture. 



Plate II 







#5^<^. 



a; 



Fig. 1— Laying Concrete Lining in Canal of East Contra Costa Irrigation 

 Project, Brentwood, Cal. 



Fig. 2.— Concrete-Lined Canal of the East Contra Costa Irrigation Proj- 

 ect, Brentwood, Cal. 



