THE second congress of the International Scientific Film Association will be held in London during October 4-11. It is being convened by the Scientific Film Association of Great Britain, with the helpjof the British Film Institute. Three days will be devoted to business meetings of the Association, and three days to a festival of scientific films, when it is hoped to show many contributions from all the participating countries to members of the general public. The congress will close with a general assembly of the delegates on October 11. The Association was constituted last year in Paris by delegates from twenty-two countries who had accepted the joint invitation to the inaugural congress from the Scientific Film Associations of Great Britain and France. The primary aim of the Association is: "To raise the standard and to promote the use of the scientific film and related material throughout the world in order to achieve the widest possible understanding and appreciation of scientific method and outlook, especially in relation to social progress". Further details may be obtained from the Scientific Film Association, 34 Soho Square, London, W.I.