THE French Association for the Advancement of Science held a large and enthusiastic Congrès de la Victoire in Paris during October 20–26. This was the first assembly of its kind to be held since 1939, the usual annual meetings having been suspended during the period of the War. At the invitation of the Association, delegates were present from Great Britain, the United States, Canada, the U.S.S.R., Argentine, Switzerland, Belgium, Sweden, Norway, Czechoslovakia and Rumania. About fifteen hundred members of the Association and the delegates were present at the opening meeting in the Great Hall of the Sorbonne on Saturday, October 20. The president of the Municipal Council of Paris opened the proceedings with a welcoming speech, which was followed by discourses delivered by Prof. Joliot-Curie and Prof. Justin Besançon, president of the French Red Cross.