AN exhibition of chemical research, organised by Imperial Chemical Industries, Ltd., is to be held at the Tea Centre, Lower Regent Street, London, S.W.I, during June 5-28. The exhibition is designed to show some of the major achievements of chemical research in Britain during the War, and to demonstrate their even greater importance in peace-time. The section “The Chemist versus Disease” will show the part played by chemical research in combating disease and improving sanitation, conditions of a century ago being contrasted with those of to-day. Particular emphasis is laid on the sulpha drugs, penicillin and 'Paludrine', and their significance in chemotherapy is explained. “The Chemist and Your Food” will outline the part played by the chemical industry in modern agriculture. Though synthetic fertilizers will be shown, this section will be mainly concerned with the evolution of chemical methods for combating moulds, bacteria and weeds. The discovery, development and use of the new selective weed-killer, 'Methoxone', will be illustrated with models, diagrams and photographs. Chemical warfare against predatory and disease-bearing insects will have a section to itself. The insecticide 'Gammexane' will be illustrated by specimens and molecular models of the four isomers of benzene hexachloride. The section on “The Chemist and Plastics” will centre around 'Perspex' and polythene. The history of 'Perspex' will be demonstrated, and a molecular model will illustrate the polymerization of methyl methacrylate. The technical interest of polythene lies in the fact that its production, by the polymerization of ethylene, involves pressures higher than those used. in any other industrial processes. Polythene is also unique in being the simplest synthetic thermoplastic, composed of long methylene chains of 1,000 units or more. Exhibits will show its electrical properties, its use as a waterproof packing material for drugs, and for acid-proof containers, funnels and, piping. The final section will be devoted to 'Ardil', the wool-like protein fibre made from ground nuts. Diagrams and models will demonstrate the breakdown of proteins into amino-acids, and the reassembly of these into proteins of a different nature. The process of the manufacture of 'Ardil' will be demonstrated, and fabrics will be shown in which it is combined with wool, cotton and rayon. The exhibition will be open daily from 10.30 a.m. to 8 p.m. (Sundays from 2 until 7 p.m.). A charge of Is. will be made for admission, and all proceeds will be given to the Empire Fund for Cancer Research.