- Descriptions of Junctions between Electronic and Solid Ionic Conductors.- Structure and Energetics of the Ionic Surface.- Adsorption and Catalysis on Ionic Solids.- Structure and Defects at Ionic Crystal Surfaces.- The Electrochemical Double Layer in Solid Electrolytes.- Space Charge Polarisation.- Polarization Studies on Solid State Electrolytes.- Electrode Reactions at Electrode-Solid Electrolyte Interfaces. Use of Electroanalytical Techniques.- Impedance Diagrams for Solid Electrolyte Cells.- Ion Transfer at the Interface between an Electronic and Ionic Conductor.- Contacts on Ionic Solids.- Electrochemical Coloration and Redox Reactions in Solid Ionic Conductors.- High Temperature Fuel Cells and Electrolysers.- The Application of Solid State Ionics to Batteries.- Rechargeable Solid Electrolyte Traction Batteries.- Various Utilisations of Solid Electrolytes.