Meeting of the international session on crystallography in the conference hall of the Leningrad Mining Institute, dedicated to the fortieth anniversary of the death of the founder of crystallography, academician ES Fedorov. Speakers: President of the International Union of Crystallographers J. Viard (University of Paris, France), R. Pepinsky (University of Pennsylvania, USA), N. V. Belov (Institute of Crystallography of the Academy of Sciences of the USSR). D. D. Bernal (University of London, Great Britain), J. Viard, session delegates talk on the sidelines. The session participants visit the museum of the institute. The explanations are given by Professor D.P. Grigoriev. Among those present - Professor I. Nitta (Japan), J. Viard and F. G. Loves (Switzerland). Museum exhibits.