Chapter I: The Length of the Year 28

II. The Length of the Day 37
III. The Mass of the Earth 43
IV. The Magnitude of the Ocean 50
V. The Magnitude of the Atmosphere 51
VI. The Constancy and Variety of Climates 52
VII. The Variety of Organization corresponding
to the Variety of Climate 57
VIII. The Constituents of Climate 66
The Laws of Heat with respect to the Earth 67
IX. The Laws of Heat with respect to Water 70
X. The Laws of Heat with respect to Air 81
XI. The Laws of Electricity 91
XII. The Laws of Magnetism 93
XIII. The Properties of Light with regard to
Vegetation 94
XIV. Sound 96
XV. The Atmosphere 102
XVI. Light 104
XVII. The Ether 111
XVIII. Recapitulation 113

BOOK II. COSMICAL ARRANGEMENTS 119
CHAPTER I. The Structure of the Solar System 121
II. The Circular Orbits of the Planets round the Sun 123
III. The Stability of the Solar System 127
IV. The Sun in the Centre 134
V. The Satellites 137
VI. The Stability of the Ocean 140
VII. The Nebular Hypothesis 143
VIII. The Existence of a Resisting Medium in the
Solar System 150
IX. Mechanical Laws 163
X. The Law of Gravitation 166
XI. The Laws of Motion 178
XII. Friction 183

BOOK III. RELIGIOUS VIEWS 193