IN the eighteenth century the education of a young man of the ruling classes was considered incomplete until he had made the Grand Tour. France, Switzerland, Italy-possibly Austria and Germany-he would traverse and he would return home a travelled man of the world. Railway travel killed the Grand Tour, but motoring has revived it. The owner of a small car can do today what the young gentleman of the eighteenth century did, at a mere fraction of the cost and in a tenth of the time. Mr. Davies did it, and in tonight's talk he will describe how.