FIVE full years of broadcasting have not sufficed to diffuse a universal art and technique of listening, and there are still many people who listen too much or too little, too diligently or too carelessly—listeners carpingly critical, listeners fatuously complacent, listeners blase, listeners ignorant, listeners inept. In this evening's talk the Earl of Drogheda, who is a member of the Council of the Wireless League, will give some advice on how to listen wisely and weli, according to the views of the League.