V1U CONTENTS. 



CHAinm Ke 



xvi. FIRE-BALLS 216 



xvn. SHOWERS OF SHOOTING STABS . . . .228 



xvm. THE NUMBER OF THE STARS .... 248 



xix. THE EXTENT OF THE SIDEREAL HEAVENS. . 255 



xx. THE MOVEMENTS OF THE STABS . . . 261 



xxi. PHOTOGRAPHING THE STABS .... 292 



xxn. AN ASTRONOMER'S THOUGHTS ABOUT KRAKATOA 319 



xxiii. DARWINISM AND ITS RELATION TO OTHER 



BBANCHES OF SCIENCE ... .343 



