x LIST OF ILLUSTRATIONS. 



fAni 



VIEW OF MARS . . . . * . .155 



WEIGHING THE PLANETS . . . . . .174 



ORBITS OF JUPITER AND THE EARTH . . . .181 



COMPARATIVE SIZES OF THE SUN AND THE PLANETS . 183 



VIEWS OF JUPITER . . . . . . .185 



KRAKATOA : ERUPTION OF, AUGUST 26-27 , , . 833 



KRAKATOA : PROGRESS OF SKY PHENOMENA . . . 336 



KRAKATOA : NORTHERN LIMIT OF SKY PHENOMENA . 339 



