Contents

649　Ring Shear Tests to Evaluate Strength Parameters in Various Remoulded Soils

        H. Toyota，K. Nakamura，M. Sumimoto and N. Sakai

661　Theoretical Description of Embankment Erosion Owing to Overflow

　   K. Fujisawa，A. Kobayashi and S. Aoyama

673　A Predictive Framework for Liquefaction Instability

　　 J. E. Andrade

683　A Graphical Method for Producing Yield Surfaces for Soils

　　 H. W. Chandler and C. M. Sands

691  Closed-Form Solution for Plastic Zone Formation around a Circular Tunnel in Half-Space Obeying Mohr-Coulomb Criterion

         S. A. Massinas and M. G. Sakellariou

703  Lateral Oedometer Testing of Anisotropic Clay as Affected by Surface Roughness

        A. Rohe，L. F. Gareau and F. Molenkamp

Technical Note

717  Parameters That Influence the Pressure Filtration Characteristics of Bentonite Grouts

        A. Bezuijen，M. P. M. Sanders and D. Den Hamer

Discussion

723  Geotechnics：The Next 60 Years

        B. Simpson and F. Tatsuoka

725  Book review

726  Erratum