Bui. 376, U. S. Dept. of Agriculture. 



Plate XIII. 



Fig. 1.— Siphon Under Union Pacific Railroad, Rock Creek Conservation Co., 



Wyoming. 



Form for inlet bowl to reduce entrj- loss. Pipe under construction in distance. See figures 



2 and 3. 



FiQ. 2.— Form for Bowl, Floor Reinforcement, and Cast-Iron Pipe for InletSection 

 FOR Structure in Figures 1 and 3. 



FlQ, 3.— Siphon Inlet Made from Form Shown in Figures 1 and 2. Entrance well 

 Submerged, Preventing Air Being Carried into Pipe. 



