Chapter II: 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 NEBULAE 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