Bui. 376, U. S. Dept. of Agriculture. 
Plate XI. 
Fig. 1.— Pipes from Surge Tank to Power House. 
Right-hand pipe held at constant velocity. 13Hoot pipe in distance. (No. 52.) 
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Fig. 2.— An Example of Twin Line Construction. 
Fig. 3.— Winter Flow is Retarded by Slush Ice. 
Note rings for grating removed to prevent ice accumulation. 
