THE Institute of Radio Engineers (330 West 42nd Street, New York) was founded in 1912 to advance the theory and practice of radio and allied branches of engineering and to maintain a high professional standard amongst its members. Although dominantly in the United States of America, the Institute membership of more than 5,000 persons is distributed throughout the world. The Proceedings, published since 1913, is issued monthly and contains contributions from leading workers in the theoretical and practical fields of radio communication. It has co-operated with many other bodies in the establishment of standards. It has published many reports dealing with the definitions of terms, letter and graphical symbols, and methods of testing and rating equipment. Now it has issued “Standards on Electronics, 1938” and “Standards on Radio Receivers, 1938” (price 50 cents each). The committees which drew up the pamphlets are to be congratulated on the thorough way they have done their work. Every radio engineer and teacher of technical electricity should have a copy of these pamphlets, for they are most useful for reference.