In this talk Mr. Melville Dinwiddie , Scottish Regional Director, will discuss some aspects of broadcasting. In particular he will refer to it as a medium of communication between the expert in knowledge and the leader in national and public life, and the individual listener seated comfortably at his fireside. Broadcast speakers occasionally forget that though they may be speaking to millions of people at once, they are often addressing men and women singly and only on odd occasions any group larger than the family. The art of doing this successfully is different from the art of addressing a large visible audience.