Abstract

<h2>Acta Crystallographica Section A</h2><h3>Crystal Physics, Diffraction, Theoretical and General Crystallography</h3><h3>0567-7394</h3> <h2>notes and news</h2> Volume 30 Part 3 Page 459 May 1974 <h2>Notes and News</h2> 459 Notes and News etnnouncements and other items of crystallographic interest will be published under this heading at the discretion of the Editorial Board. The notes (in duplicate) should be sent to the Executive Secretary of the International Union of Crystallography (d. N. King, International Union of Crystallography, 13 White Friars, Chester CH1 1NZ, England). Index of French laboratories producing mineral crystals The Montpellier Documentation Centre has just issued a new index of French industrial and university laboratories which produce mineral crystals. This index supersedes the index prepared in 1967. This index may be obtained by sending the sum of three francs (postage stamps) or four international reply coupons to Professor Vergnoux, Centre de Documentation sur les Synth6ses Cristallines, Universit6 des Sciences et Tech- niques du Languedoc, Place Eug6ne Bataillon, F-34060 Montpellier Cedex, France. Book Reviews 14 orks intended Jor notice in thia column should be sent direct to the Book-Review Editor (M. M. Woolfson, Physics De- partment, University of York, Heslington, York YO1 5DD, England). As far as practicable books will be reviewed