CHAPTER XXVIII

THE END OF THINGS 342

INDEX 351

LIST OF ILLUSTRATIONS

LIST OF PLATES

PLATE THE TOTAL ECLIPSE OF THE SUN OF AUGUST 30, 1905 _Frontispiece_

I. THE TOTAL ECLIPSE OF THE SUN OF MAY 17, 1882 _To face page_ 96

II. GREAT TELESCOPE OF HEVELIUS " " 110

III. A TUBELESS, OR "AERIAL" TELESCOPE " " 112

IV. THE GREAT YERKES TELESCOPE " " 118

V. THE SUN, SHOWING SEVERAL GROUPS OF SPOTS " " 134

VI. PHOTOGRAPH OF A SUNSPOT " " 136

VII. FORMS OF THE SOLAR CORONA AT THE EPOCHS OF SUNSPOT MAXIMUM AND SUNSPOT MINIMUM RESPECTIVELY. (A) THE TOTAL ECLIPSE OF THE SUN OF DECEMBER 22, 1870. (B) THE TOTAL ECLIPSE OF THE SUN OF MAY 28, 1900 " " 142

VIII. THE MOON _To face page_ 196

IX. MAP OF THE MOON, SHOWING THE PRINCIPAL "CRATERS," MOUNTAIN RANGES AND "SEAS" " " 198

X. ONE OF THE MOST INTERESTING REGIONS ON THE MOON " " 200

XI. THE MOON (SHOWING SYSTEMS OF "RAYS") " " 204

XII. A MAP OF THE PLANET MARS " " 216

XIII. MINOR PLANET TRAILS " " 226

XIV. THE PLANET JUPITER " " 230

XV. THE PLANET SATURN " " 236

XVI. EARLY REPRESENTATIONS OF SATURN " " 242

XVII. DONATI'S COMET " " 256

XVIII. DANIEL'S COMET OF 1907 " " 258

XIX. THE SKY AROUND THE NORTH POLE " " 292

XX. ORION AND HIS NEIGHBOURS " " 296

XXI. THE GREAT GLOBULAR CLUSTER IN THE SOUTHERN CONSTELLATION OF CENTAURUS " " 306

XXII. SPIRAL NEBULA IN THE CONSTELLATION OF CANES VENATICI " " 314

XXIII. THE GREAT NEBULA IN THE CONSTELLATION OF ANDROMEDA _To face page_ 316

XXIV. THE GREAT NEBULA IN THE CONSTELLATION OF ORION " " 318

LIST OF DIAGRAMS

FIG. PAGE 1. THE PTOLEMAIC IDEA OF THE UNIVERSE 19

2. THE COPERNICAN THEORY OF THE SOLAR SYSTEM 21

3. TOTAL AND PARTIAL ECLIPSES OF THE MOON 64

4. TOTAL AND PARTIAL ECLIPSES OF THE SUN 67

5. "BAILY'S BEADS" 70

6. MAP OF THE WORLD ON MERCATOR'S PROJECTION, SHOWING A PORTION OF THE PROGRESS OF THE TOTAL SOLAR ECLIPSE OF AUGUST 30, 1905, ACROSS THE SURFACE OF THE EARTH 81

7. THE "RING WITH WINGS" 87

8. THE VARIOUS TYPES OF TELESCOPE 113

9. THE SOLAR SPECTRUM 123

10. A SECTION THROUGH THE SUN, SHOWING HOW THE PROMINENCES RISE FROM THE CHROMOSPHERE 131

11. ORBIT AND PHASES OF AN INFERIOR PLANET 148

12. THE "BLACK DROP" 153

13. SUMMER AND WINTER 176

14. ORBIT AND PHASES OF THE MOON 184

15. THE ROTATION OF THE MOON ON HER AXIS 187

16. LAPLACE'S "PERENNIAL FULL MOON" 191

17. ILLUSTRATING THE AUTHOR'S EXPLANATION OF THE APPARENT ENLARGEMENT OF CELESTIAL OBJECTS 195

18. SHOWING HOW THE TAIL OF A COMET IS DIRECTED AWAY FROM THE SUN 248

19. THE COMET OF 1066, AS REPRESENTED IN THE BAYEUX TAPESTRY 263

20. PASSAGE OF THE EARTH THROUGH THE THICKEST PORTION OF A METEOR SWARM 269

ASTRONOMY OF TO-DAY