The XVlllth General Assembly of the International Astronomical Union was
held in Patras, Greece, from 17-26 August 1982. It was marked by the
tragic death of the President of the IAU, Professor M.K.V. Bappu, on
August 19, 1982. This sad event, without precedent in the history of the
Union, posed serious problems to the organization of the General
Assembly, which could only be overcome by the full collaboration of all
members, the organizers, and the Executive Committee. A tribute to the
memory of Prof. Bappu was paid during a plenary meeting on 23 August
1982. The full texts of the speeches are published in Chapter I of this
. volume. The excellent scientific programme in Patras was organized by
the Presidents of the 40 IAU Commissions and coordinated by the IAU
General Secretary (1979-1982), Professor P.A. Wayman. The local
arrangements were taken care of by Professor C. Goudas and his
collaborators from the Patras University. Due to the unexpected
withdrawal in 1979 of another invitation to host the 1982 IAU General
Assembly, the organizers in Greece had less than two years available for
the extensive preparations, and our hearty thanks are due to them for
their persistent efforts, which made this General Assembly an
outstanding success.