The dancing was magnificent, the science was dazzling, and the delegates were delighted with the XVI Congress and General Assembly of the IUCr. The images on the poster of A.L. Mackay entitled "Flexi-Crystallography" and those in the plenary lecture of R.F. Nesper on "Internal Surfaces as Order Principles in Solids" were among the most colorfol and thought provoking of the meeting.
Members of the Executive Committee of the IUCr pictured (from the left) First Row: R Chidambaram, R. Diamond, P. Coppens, A. Authier, A. Kalman, P. Codding, J Harada, M Hart (newly-elected), A.I Hordvik; Second Row: H. Schenk (newly-elected), Y. Struchkov, M. Nardelli, B. Vainshtein (ex member), and T. Baker (newly-elected). The person who correctly identifies the largest number of individuals in the picture will receive an 8 × 10 color enlargement of the photo.