Transactions of the International Astronomical Union

I Inaugural Ceremony.- Address by Dr. A. Davidsen, co-Chairman of the Local Organizing Committee.- Address by Dr. R. Giacconi, co-Chairman of the Local Organizing Committee.- Address by Dr. F. Drake, Chairman of the National Organizing Committee.- Address by Dr. S. Muller, President of the Johns Hopkins University.- Address by K.L. Schmoke, Mayor of the City of Baltimore.- Address by M.A. Steinberg, Lieutenant Governor of the State of Maryland.- Address by Dr. F. Drake, on behalf of Dr. B. Shakhashiri, Assistant Director for Science & Engineering Education, National Science Foundation.- Address by Dr. N.W. Hinners, Associate Deputy Administrator, NASA Headquarters.- Address by Dr. W. R. Graham, Science Advisor to the President & Director of the Office of Science & Technology Policy.- Address by Prof. J. Sahade, President of the International Astronomical Union.- II Extraordinary General Assembly.- 1. Extension of the membership of the Executive Committee by a President-Elect.- 2. Establishment of a new category of adherence to the Union, Associate National Member.- III Twentieth General Assembly.- Session 1: 2 August, 1988.- Session 2: 11 August, 1988.- IV Report of the Executive Committee.- Executive Committee 1985-1988.- 1. Introduction.- 2. Administration.- 3. Commissions of the IAU.- 4. Scientific Meetings.- 5. Publications.- 6. Relations to other organisations.- 7. Financial matters.- 8. List of Adhering Organisations.- 9. List of deceased Members.- 10. List of IAU Publications.- V Report of Meetings of Commissions.- 4 Ephemerides (Ephémérides).- 5 Documentation & Astronomical Data (Documentation & données astronomiques).- 6 Astronomical Telegrams (Télégrammes astronomiques).- 7 Celestial Mechanics (Mécanique céleste).- 8 Positional Astronomy (Astronomiede position).- 9 Instruments & Techniques.- 10 Solar Activity (Activité solaire).- 12 Radiation & Structure of the Solar Atmosphere (Radiation & structure de l'atmosphère solaire).- 14 Atomic & Molecular Data (Données atomiques & moléculaires).- 15 Physical Study of Comets, Minor Planets & Meteorites (Etude physique des comètes, des petites planètes & des météorites).- 16 Physical Study of Planets & Satellites (Etude physique des planètes & des satellites).- 19 Rotation of the Earth (Rotation de la Terre).- 20 Positions & Motions of Minor Planets, Comets & Satellites (Postitions & mouvements des petites planètes, des comètes & des satellites).- 21 Light of the Night Sky(Lumière du ciel nocturne).- 22 Meteors & Interplanetary Dust (Météores & poussière interplanétaire).- 24 Photographie Astrometry (Astrométrie photographique).- 25 Stellar Photometry & Polarimetry (Photométrie & polarimétrie stellaire).- 26 Double & Multiple Stars (Etoiles doubles & multiples).- 27 Variable Stars (Etoiles variables).- 28 Galaxies.- 29 Stellar Spectra (Spectres stellaires).- 30 Radial Velocities (Vitesses radiales).- 31 Time (L'heure).- 33 Structure & Dynamics of the Galactic System (Structure & dynamique du système galactique).- 34 Interstellar Matter (Matière interstellaire).- 35 Stellar Constitution (Constitution des étoiles).- 36 Theory of Stellar Atmospheres (Théorie des atmosphères stellaires).- 37 Star Clusters & Associations (Amas stellaires & associations).- 38 Exchange of Astronomers (Echange d'astronomes).- 40 Radio Astronomy Radioastronomie.- 41 History of Astronomy (Histoire de l'astronomie).- 42 Close Binary Stars (Etoiles doubles serrées).- 44 Astronomy from Space (L'astronomie à partir de l'espace).- 45 Stellar Classification(Classification stellaire).- 46 Teaching of Astronomy (Enseignement de l'Astronomie).- 47 Cosmology (Cosmologie).- 48 High Energy Astrophysics (Astrophysique des hautes énergies).- 49 The Interplanetary Plasma & the Heliosphere (Plasma interplanétaire & héliosphère).- 50 Protection of Existing & Potential Observatory Sites (Protection des sites d'observatoires existants & potentiels).- 51 Bioastronomy: Search for Extraterrestrial Life (Bioastromie: recherche de la vie dans l'Univers).- VI Functions and Statutes of the Union Pink/FSl.- 1. Useful addresses.- 2. History of the Union.- 3. IAU Representation to other Organisations.- 4. Services of the Union.- 5. Rules for Scientific Meetings.- 6. Statutes, By-Laws & Workings Rules.- VII Membership Green/Ml.- 1. List of Adhering Countries.- 2. Membership of Commissions.- 3. Geographical Repartition of Members.- 4. Alphabetical List of Members.- VIII IAU Style Book S1-S50.