International Series of Monographs in Natural Philosophy, Volume 37: The Expanding Earth: Some Consequences of Dirac’s Gravitation Hypothesis focuses on the applications of Dirac’s gravitation hypothesis. The book first discusses objections to Dirac’s hypothesis and expansion cracks, including geological chronology, astrophysical objections, rift valleys, rills of the moon, deep-sea trenches, and oceanic rifts. The text then looks at the origin of the oceans, as well as growth and shrink of continents, expansion and formation of oceans, growth of land areas, and paleomagnetism. The manuscript examines the physics of the earth-moon system. Topics include rheology and seismic exploration of the earth's interior; quantitative data about the earth's expansion; and Dirac’s hypothesis and the many-body problem. The book also offers information on volcanoes, lunar craters, folded mountains, and ice ages. Topics include Binge’s explanation of volcanism, folded mountains, and submarine tablemounts and currents. The text is a dependable source of data for readers interested in Dirac’s gravitation hypothesis.