Bui. 376, U. S. Dept. of Agriculture. 
Plate I. 
wmm 
Fig. 1.— Typical Cipolletti Weir, with Hook Gauge in Stilling Box. 
Note brush screen in foreground to reduce velocity of approach. 
Fig. 2.— Weir at Outlet of Pipe No. 30, Norfolk County Water Co., Virginia. 
The immediate bottom contraction similar to that shown at side, although water above weir 
wall is several feet deep. 
Fig. 3— Tank of Butler (Pa.) Water Co. Used in Measuring Discharge of Pipe 
No. 29. 
