GENERAL CONTENTS Preface History of the subject before the appearance of Newton's "Principia" Extracts from Newton's Principia and "System of the World" Biographical sketch of Newton Bouguer's "The Figure of the Earth" Biographical sketch of Bouguer The Bertier controversy Account of Maskelyne's experiments on Scheliallien Cavendish's "Experiments to determine the mean density of the Earth" Biographical sketch of Cavendish Historical account of the experiments made since the time of Cavendish Table of results of experiments Bibliography Index