AN International Conference on Flames and Furnaces will be held during September 17–20, 1940, at the Royal Institution in London on the initiative of the Institute of Fuel and the British Coal Utilisation Research Association. One purpose of the Conference is to bring the new developments of chemical kinetics and spectroscopy to the notice of engineers and industrialists with the view of accelerating their practical application. The technical programme of the International Conference in 1940 has been prepared by a Committee of thirty engineers and scientific workers. Flames in the internal combustion engine and explosive flames generally are excluded from the scope of the Conference, which will be concerned with the free combustion of gases, liquids and solids in air. The Editorial Committee proposes to invite the authors of papers to collaborate in covering the whole ground of flame and furnace research with the minimum of overlap. Selected authors throughout the world will be asked to contribute papers on specified problems, and early in 1940 the Editorial Committee will co-ordinate the various papers with the help of selected experts in each field acting as chairmen and reporters of the various technical sessions. It is hoped to secure a large attendance of foreign engineers and scientific workers for a conference which should have great practical industrial significance.