6. Magnetic Clouds.- 6.1 Introduction.- 6.2 Definition and Properties of Magnetic Clouds.- 6.3 Origin and Composition of Magnetic Clouds.- 6.4 Model of the Local Structure of Magnetic Clouds.- 6.5 Large-Scale Structure of Magnetic Clouds.- 6.6 Motion and Stability of Magnetic Clouds.- 6.7 Nonthermal Particles and Magnetic Clouds.- 6.8 Effects of Magnetic Clouds on Geomagnetic Activity.- 6.9 Effects of Magnetic Clouds on Galactic Cosmic Rays.- 6.10 Magnetic Clouds and Compound Streams.- 6.11 Questions Concerning Magnetic Clouds.- References.- 7. Interplanetary Slow Shocks.- 7.1 Introduction.- 7.2 Generation of Interplanetary Slow Shocks.- 7.3 Solar Wind Constraints on the Development and Evolution of Interplanetary Slow Shocks.- 7.4 Constraints on the Unique Identification of Interplanetary Slow Shocks from Space Observations.- 7.5 Summary.- References.- 8. Kinetic Physics of the Solar Wind Plasma.- 8.1 Introduction.- 8.2 Particle Velocity Distributions.- 8.3 Coulomb Collisions and Nonclassical Transport.- 8.4 Wave-Particle Interactions and Anomalous Transport.- 8.5 Nonequilibrium Thermodynamics.- 8.6 Dissipation of MHD Turbulence and Particle Heating.- 8.7 Energy, Momentum, and Mass Input into the Solar Wind.- 8.8 Conclusions.- References.- 9. Waves and Instabilities.- 9.1 Introduction.- 9.2 Electrostatic Waves.- 9.3 Electromagnetic Waves.- 9.4 Conclusion.- References.- 10. MHD Turbulence in the Solar Wind.- 10.1 Introduction.- 10.2 Structures and Fluctuations in the Inner Heliosphere.- 10.3 MHD Theory and Turbulence Diagnostics.- 10.4 Nature and Morphology of MHD Fluctuations.- 10.5 Origin and Evolution of Solar Wind MHD Turbulence.- 10.6 Theoretical Concepts of Turbulence Generation and Evolution.- 10.7 Summary and Conclusions.- References.- 11. Energetic Particles inthe Inner Solar System.- 11.1 Introduction.- 11.2 Modulation of Galactic Cosmic Radiation.- 11.3 Interplanetary Propagation of Solar Energetic Particles.- 11.4 Coronal Propagation.- 11.5 Particle Acceleration in Solar Flares.- 11.6 Particle Acceleration in Corotating Interplanetary Regions.- References.