The most urgent task confronting the new Union of Crystallography is the re-establishment of an international journal for publishing Crystallographic research. Thanks to generous financial support from the United Nations Educational, Cultural and Scientific Organisation and from many research associations and industrial organisations in Britain, preparations are now well advanced for the launching in January 1948 of Acta Crystallographica, a journal to appear in six issues a year under the editorship of Prof. P. P. Ewald (Queen's University, Belfast, Northern Ireland), with Dr. R. C. Evans (Crystallographic Laboratory, Cavendish Laboratory, Cambridge, England), Prof. I. Fankuchen (Brooklyn Polytechnic Institute, 99 Livingston Street, Brooklyn 2, N.Y., U.S.A.), Prof. A. V. Shubnikov (c/o Academy of Sciences, Moscow, U.S.S.R.) and Prof. J. Wyart (Laboratoire de Minéralogie, La Sorbonne, I rue Victor-Cousin, Paris V, France) as regional co-editors. The Cambridge University Press will be the publishers and general distributors; but by arrangement of the American Institute of Physics it will be possible for subscribers in North America to pay their subscription through that Institute. Authors wishing to submit papers in English, French, German or Russian are asked to send them to Dr. Evans or Prof. Fankuchen, Prof. Wyart, Prof. Ewald, and Prof. Shubnikov, respectively, according to the language used.