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

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