World's chemist attend congress. Stockholm, Sweden: Delegates at the inaugural ceremony of the 13th International Congress of Pure and Applied Chemsitry. Seated (form left) are: Professor Arne Tiselius, Sweden; Dr. E.W.R. Steacie, Canada; Professor H.R. Kroyt, Holland; Professor Pierre Jolibois, France; Dr. I.H. Lampitt, Britain; Professor O.J. van Nieuwenburg, Holland; and P. Kirkov, of Yugoslavia. Some 1500 delegates were attending the conference. July 30th 1953