1096 
Journal of Agricultural Research 
Vol. V, No. 23 
Fig. 16.—Curves showing the effect of different ratios of cross-sectional area of the weir box (A) to the area 
of the notch (a) upon discharges through a i-foot rectangular notch with heads of 0.6 foot and 1 foot. 
Full lines show bottom contractions in feet; dot-dash lines show end contractions in feet. 
