LIST OF TEXT ILLUSTRATIONS Fio. 1. Foreign Tide Standards -------- 2. Diagram of Prevailing Winds, Newhaven, Sussex, 1847-83 - 3. Diagram of Subsoils, St. Paul’s Cathedral - 4. Essex Sea-wall ---------- 5. Cross-section of Training Wall, Tampico Harbour 6. Cross-section of Training Wall, River Mississippi 7. Diagram of Torquay Harbour - - - - -7A. Profile of Chesil Bank - -- -- -- - 8. Diagram of a Plant in the Soil ------ 9. Diagram of Perennial Herb - - - - - 10. Diagrammatic Longitudinal Section of Tree or Shrub 11. Seedlings and Mobile Ground ------ 12. Diagrams showing Relation of Psamma to an Intermittently Rising Ground Level -------- 13. Section of Sand Dune Formation, Rhyl - 14. An Early Experimental Dune Planting - - - - - 15. Diagram showing Stages in the Creation of a Littoral Dune 16. Standard Squares for Psamma Planting - 17. Proposed Coast Road, Rhyl: Tree-planting Diagram - 18. Sketch Map of Chesil Beach ------- 19. Apposition Beaches --------- 20. Profiles of Chesil and Blakeney Beaches - 21. Shingle Spit with Hooks (Hurst Castle) - 22. Profile through Shoreham Beach, showing Displacement of Shingle - -- -- -- -- - 23. Charts showing Persistence and Spread of Silent maritima- 24. Suceda fruticosa rejuvenated from Prostrated Branches; also a twig of same, nat. size ------- 25. Mode of Ascent of Suceda fruticosa in a Travelling Beach - 26. Successive Positions of a Single Specimen of Suceda rruticosa in a Travelling Beach ------- xill Page 3 6 12 14 17 18 35 42 46 47 48 5° 61 69 72 75 78 83 88 89 90 93 95 101 103 i°5 106