xii LIST OF DIAGRAMS 



FIG. PACE 



Sewage-flow, Chatauqua, N. Y 41 134 



Cadillac, Mich 42 135 



Gloversville 43 136 



Hourly Variation at Gloversville 44 138 



Available Length of 6-inch Laterals 47 188 



Proportional Velocities and Discharges at Different Depths of a Circular 



Pipe 60 211 



Comparison of Grade and Velocity in 6-inch Pipe 67 228 



Flush-waves, Green St. (30 Cu. Ft. Flush) 68 234 



' ' Green St. (40 Cu. Ft. Flush) 69 234 



' ' Cayuga St 70 234 



Aurora St 71 235 



