THE past decade has demonstrated the great importance of efficient and rapid communication as an essential part of modern civilization. Although in certain directions spectacular advances have been made in the development of telecommunications, which includes both radio and land-line signalling, there is more need now than hitherto for pursuing that fundamental research which underlies all the many applications of these techniques. In order to meet this need, the Department of Scientific and Industrial Research formed in 1946 an ad hoc Telecommunications Research Committee under the chairmanship of Sir Stanley Angwin, for the purpose of denning the basic problems in the whole field of telecommunications that would require investigation in the next few years. The Committee, which consisted of representatives of the radio industry, of those Government departments directly concerned vwith this subject, and of the British Broadcasting Corporation, drew up a report which has recently been published by the Department of Scientific and Industrial Research ("The Fundamental Research Problems of Telecommunications", London, H.M. Stationery Office, 1948. Is. 6d. net).