I. Problems and methods in crystallographic computing

Forty papers were presented in two and one‐half days at the symposium on problems and methods in crystallographic computing, and this was a welcome change of pace from the rapporteured sessions of the previous week. With a few exceptions, the papers were concerned with programming for various aspects of crystal‐structure analysis. General‐purpose machines were invariably used, ranging from the IBM 1620 class to the ATLAS at Manchester.