240 



THE IMPROVEMENT OF RIVERS. 



appears to have several advantages over the usual construction, among which is the 

 fact that it avoids the handling and transportation of the rails. 



DIMENSIONS OF TRESTLES OF CHANOINE WICKET DAMS. 



COST OF CHANOINE WICKET DAMS WITH SERVICE BRIDGES. 



COST OF CHANOINE WICKET DAMS WITHOUT SERVICE BRIDGES. 



