THE Empire Marketing Board has published a new edition of its film library catalogue, and copies are obtainable free on request from the Board, 2 Queen Anne's Gate Buildings, London, S.W.I. A great variety of films illustrating different aspects of scenery, natural history, and economic activity is now available. These cover most parts of the Empire. An important addition to the list is a series of class-room films, which are intended for the use of teachers rather than for general circulation. There are about forty of these films, some of which are travel surveys, while others deal with such subjects as canals, irrigation, cotton, wool, water power, or social life. All the films are available free for approved displays at which there is no charge for admission. Carriage must be paid by the borrower.