procedure

• Make ball out of wet soil.
• Cut the ball with sharp knife.
• Observer it while cutting for the strength required and the friction with the knife.

Interpretation

• If the strength required is more then soil has more sand and if less then it has more clay.
• If there is more friction with knife then it has more sand and if then than it has more clay.
• If the cut surface is dull then it has more silt and if the surface is shiny then it has more clay.