Notes and News

<h2>Acta Crystallographica</h2><h3></h3><h3>0365-110X</h3> <h2>notes and news</h2> Volume 22 Part 3 Pages 443-444 March 1967 <h2>Notes and News</h2> 443 Notes and News Announcements and other items o.f crystallographic interest will be published under this heading at the discretion of the Editorial Board. The notes (in duplicate) shouM be sent to the General Secretary of the International Union of Crystallography (G. Boom, Laboratorium voor Technische Natuurkunde der Rijksuniversiteit, Westersingel 34, Groningen, The Nether- lands). Publication of an item in a particular issue cannot be guaranteed unless the draft is received 8 weeks before the date of publication. Ewald Festschrift The January 1968 number of Acta Crystallographica will take the form of a Festschrift in honour of the eightieth birthday of Professor P. P. Ewald, F.R.S. Contributions are invited, which may be either strictly scientific or of an in- formal or biographical nature. Scientific papers should be submitted in the ordinary way to the appropriate Co-editor; other contributions should be submitted to the Editor. In order to allow sufficient time for refereeing and printing the closing date for receipt of contributions is 10 June 1967. Fourth European Regional Conference on Electron Microscopy The Fourth European Regional Conference on Electron Microscopy will be held in Rome from September 1 to 7, 1968, sponsored by the Italian Society of Electron Micro- scopy, and will be supported by the Italian National Re- search Council. Further information may be obtained from the Secretary of the meeting: D.Steve Bocciarelli, Istituto Superiore di Sanit/t, Viale Regina Elena 299, Roma, Italy....