| page | | Introduction | 1 | | chapter | | | I. | The Astronomical Observatory | 9 | | II. | The Sun | 29 | | III. | The Moon | 70 | | IV. | The Solar System | 107 | | V. | The Law of Gravitation | 122 | | VI. | The Planet of Romance | 150 | | VII. | Mercury | 155 | | VIII. | Venus | 167 | | IX. | The Earth | 192 | | X. | Mars | 208 | | XI. | The Minor Planets | 229 | | XII. | Jupiter | 245 | | XIII. | Saturn | 268 | | XIV. | Uranus | 298 | | XV. | Neptune | 315 | | XVI. | Comets | 336 | | XVII. | Shooting Stars | 372 | | XVIII. | The Starry Heavens | 409 | | XIX. | The Distant Suns | 425 | | XX. | Double Stars | 434 | | XXI. | The Distances of the Stars | 441 | | XXII. | Star Clusters and NebulÆ | 461 | | XXIII. | The Physical Nature of the Stars | 477 | | XXIV. | The Precession and Nutation of the Earth's Axis | 492 | | XXV. | The Aberration of Light | 503 | | XXVI. | The Astronomical Significance of Heat | 513 | | XXVII. | The Tides | 531 | | Appendix | 558 |
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