Section headings and papers: Preface. Input, Storage and Dissipation. Reconnection versus Kelvin-Helmholtz instability in magnetospheric energy transfer: ISEE observations, P Song et al . Comparative and Global Aspects. Solar wind effects in Jupiter's radio emission, C H Barrow. A study of long planetary magnetotails, W Macek. Energy coupling in the magnetospheres of Earth and Mercury, D N Baker. Processes in Earth's Magnetotail and Plasma Sheet. Heating and cooling of the Earth's plasma sheet, C K Goertz. A statistical study of magnetic field magnitude changes during substorms in the near-Earth tail, R E Lopez et al . Quasi-adiabatic plasmasheet ion acceleration and formation of the hot boundary layer flows, J Buchner et al . Quasi-linear theory of the ion-beam acoustic instability in the plasma sheet boundary layer, T M Burinskaya & C-V Meist;r. Author Index.