Part 11 Introduction to statistical mechanics of fluids: molecular interactions; the structure of liquids; the potential of mean force; time-dependent correlation functions; applications of the pair distribution function; measurement of correlation functions; calculation of distribution functions. Part 12 Adsorption from solution: adsorption of potential determining ions; detection of specific adsorption; the oxide-solution interface; thermodynamic approach to adsorption; adsorption of multivalent ions; surfactant adsorption. Part 13 The electrokinetic effects: the standard double layer model; the electrokinetic equations; boundary conditions; double layer dynamics; electrokinetic effects in thin double layer systems; numerical solution of the linearized electrokinetic equation; validity of the electrokinetic equations. Part 14 The structure of concentrated dispersions: relating potential to structure; use of neutron scattering to measure structure; structure of isotropic dispersions of spherical particles; structures involving anisotropy. Part 15 Thin films: structure and forces in thin liquid films; hydrodynamics of film thinning; film stability; disjoining pressure; film stability and wetting; non-equilibrium effects; experimental studies of film stability. Part 16 Emulsions: formation and stability of emulsions; emulsion type and interface structure; breakdown mechanisms; thermodynamic considerations in emulsion stability; calculation of interaction energy; surface dynamic processes and emulsion stability; energy requirements in emulsification; induction of emulsion breakdown. Part 17 Microemulsions: mechanism of formation of microemulsions; thermodynamics of microemulsification; geometrical considerations; phase maps; application of physical techniques; applications of microemulsions. Part 18 Rheology of colloidal dispersions: behaviour of time dependent and independent inelastic fluids; visco-elastic fluids; measurement of rheological properties of inelastic fluids in Covette flow; capillary viscometer; cone and plate or cone and cone viscometer; time-dependent inelastic behaviour; microrheology; microscopic basis of rheological models. Appendices: Fourier transforms; Reynolds flow.