SOLAR WIND.

Fifty-five papers by various authors deal with the solar wind. Major topics covered are: photospheric and coronal magnetic fields; interplanetary magnetic field; large scale features of the solar wind plasma; solar and stellar spin-down; angular momentum of the solar wind; microstructure, ″turbulence″ and hydromagnetic waves in the solar wind; shock waves and structure of large scale disturbances; radio observations of the solar wind; observational evidence and theory of the ionic composition of the solar wind and fractionation effects at the coronal base and in the solar wind; and interaction of the heliosphere and the galactic medium - the distant solar wind.