GENERAL CONTENTSPrefaceHistory of the subject before the appearance of Newton's ©Principia©Extracts from Newton's Principia and ©System of the World©Biographical sketch of NewtonBouguer's ©The Figure of the Earth©Biographical sketch of BouguerThe Bertier controversyAccount of Maskelyne's experiments on ScheliallienCavendish's ©Experiments to determine the mean density of the Earth©Biographical sketch of CavendishHistorical account of the experiments made since the time of CavendishTable of results of experimentsBibliographyIndex