CHAPTER IV.

Preliminaries to analysis of the Nebular hypothesis 72 Definition of the hypothesis 73 Elements of solar system. Tables of dimensions and masses 75 Explanation of tables and density of Saturn 78 Volume, density and mass of Saturn's rings, general remarks about them, and satellites to be made from them 79 Future of Saturn's rings 79 Notions about Saturn's satellites and their masses 80 Nature of rings seemingly not well understood 81 Masses given to the satellites of Uranus and Neptune. Explanations of 81 Volumes of the members of the solar system at density of water 82