A great deal of nonsense is talked about the appreciation of pictures by people who seem to believe that an intricate knowledge of the technique of painting is necessary before one can recognise a great picture, or distinguish it from one that is fairly good. Mr Barton is a firm believer in the 'common-sense' view, and has done great things with it at the Bristol Grammar School, whose headmaster he is. His talk tonight will be especially appropriate in view of the Dutch Exhibition which opens later in the week, and on which Mr. Wilenski will broadcast a talk on Thursday night.