Began-IV; The Continents and the broad foundations on which they are built'
PROFESSOR W. W. WATTS, who is to give the next three talks of this series, is Professor of Geology at the Imperial College of Science and Technology, South Kensington. His talk tonight explains the division of the earth into sea and continent, and the various implications of such an antithesis. Among other points which he will touch upon in the course of this talk is that of the subject of earth pressures and their relief in earthquakes and volcanoes-with particular reference to Vesuvius and Etna and the great volcanoes of Hawaii.