SETTLING VELOCITIES IN MICRONS PER SECOND 



COARSE MEDIUM 



SAND SAND 



- (2 ^ - r^ <^ ^ ( 



DIAMETERS IN MICRONS ' 



FINE [very fine! COARSE 1 MEDIUM I FINE IvERY FINeI COARSE I MEDIUM 

 SAND 5 AND SILT SILT SILT SILT CLAY CLAY 



F INE VERY FINE 



CLAY CLAY 



SETTLING VELOCITIES IN MICRONS PER SECOND 



DIAMETERS IN MICRONS 



COARSE MEDIUM 1 FINE jvERY FINE COARSE MEDIUM FINE 



SAND I SAND | SAND ] SAND | SILT | SILT | SI1.T 



FIGS. 19-20 — SETTLING VELOCITIES IN MICRONS PER SECOND AT 20 °C, SAMPLES 31 AND 34 



VERY FINE COARSE 

 SILT CLAY 



MEDIUM 

 CLAY 



FINE 

 CLAY 



ERY FINE 

 CLAY 



143 



