THE SOCIETY FOR ANALYTICAL CHEMISTRY Forthcoming Meetings-couttiutwd Wednesday 25th MICROCHEMICAL METHODS GROUP London Discussion Meeting. J,ONDON Discussion on “The Direct Determination of Oxygen in Organic Compounds ” The Leicester Lounge Glasshouse Street London W. 1 ; 6.30 p.m. CHROMATOGRAPHY AND ELECTROPHORESIS GROUP. Discussion on “Pre-coated Plates and Films for Thin-layer Chromatography,” to be introduced by Professor E. J . Shellard and G. Whitechurch. The Leicester Lounge Glasshouse Street London W.l; 6.15 p.m. to be introduced by F. H. Oliver. Thursday 26th J o ~ n ON THE SOCIETY FOR ANALYTICAL CHEMISTRY Forthcoming Meetings January Thursday 29th LONDON February Thursday 5th LONDON Tuesday 10th LEEDS Tuesday 10th NEWCASTLE Wednesday 1 1 th LONDON Thursday 12th LIVERPOOL Thursday 12th LONDON Tuesday 17th ED INBURGH Thursday 19th LONDON Tuesday 24th JOINT PHARMACEUTICAL ANALYSIS GROUP Inaugural Meeting followed by a Discussion Meeting on “The RBle of the Analyst in Pharmaceutical Control.” Pharmaceutical Society of Great Britain 17 Bloomsbury Square London W.C.2; 2.30 p.m.RADIOCHEMICAL METHODS GROUP Meeting on “Radiometric Standards.” “The Measurement of Radioactivity,” by P. J. Campion. “Practical Aspects of Using Radioactive Standards,’’ by L. C. Myerscough. “Criteria of Purity for Radiopharniaceuticals,” by J . C. Charlton. Lecture Room Laboratory of the Government Chemist Cornwall House NORTH OF ENGLAND SECTION jointly with the Leeds University Union Chemical “Recent Work on Dithizone and its Selenium Analogue,” by Professor The University Leeds; 5.15 p.m.NORTH EAST SECTION jointZy with the Newcastle upon Tyne Section of the Royal Institute of Chemistry. “Future Trends in Chemical Analysis,” by J . B. Headridge. Chemistry Department The University Newcastle upon Tyne ; 6.30 p.m. SOCIETY. “Analytical Cosmochemistry (or Migrants from Outer Space Enter the Lecture Theatre 342 Department of Mechanical Engineering Imperial NORTH OF ENGLAND SECTION SPECIAL TECHNIQUES and ATOMIC SPECTRO- Liverpool. BIOLOGICAL METHODS GROUP. “Immunological Assays.” Pharmaceutical Society of Great Britain 17 Bloomsbury Square London SCOTTISH SECTION jointly with the Edinburgh University Chemical Society. “Amplification Reactions and their Applications ” by Professor R. Belcher. University of Edinburgh Edinburgh ; 4.30 p.m AUTOMATIC METHODS GROUP.Discussion on “Bridging the Gap An open discussion of the Problems of Manufacturers and Users in the Field of Automatic Instrumentation,” to be introduced by D. H. Loebl and R. J. Weir. Stamford Street London S.E. 1 ; 2.30 p.m. Society. H. M. N. H. Irving. Laboratory),” by A. A. Smales. College London S.W.7; 6.30 p.m. SCOPY GROUPS on “Fluorescence Spectroscopy.” W.C.1; 5 p.m. The Leicester Lounge Glasshouse Street London W. 1 ; 6.30 p.m. NORTH EAST SECTION jointly with the Teesside Section of the Royal Institute MIDDLESBROUGH of Chemistry. L. S. Phillips. “Yorkshire’s Pink Gold its Discovery Exploration and Evaluation,” by “The Analysis of Crude Potash Materials,” by J. M. Skinner. Constantine College of Technology Middlesbrough ; 8 p.m. NORTH OF ENGLAND and MIDLANDS SECTIONS and THERMAL ANALYSIS GROUP jointlly with the Chemical Society on “Newer Techniques of Thermal Analysis with Special Reference to Calorimetry.” Wednesday 25th KEELE Speakers to include M. M. Faktor Professor I>. Rouquerol and I. Wiley. University of Keele Staffs.; 2.30 p.m. [continued on inside back cover Printed by W Heffer & Sons Ltd Cambridge England