LIST OF ILLUSTRATIONS. 



PHOTOGRAPH OF THE MOON . . . frontispiece 

 SUNSPOTS 10 



THE SOLAR PROMINENCES 12 



THE SOLAR CORONA . . . . . . .13 



THE LUNAR Disc SHOWN AGAINST THE MAP OF EUROPE 51 



LUNAR ORBIT COMPARED WITH CIRCUMFERENCE OF THE 



SUN 52 



VlEW FROM THE SURFACE OF THE MOON . . .81 

 LUNAR CRATERS COMPARED WITH THE AREA OF ENGLAND 89 



THE MERIDIAN CIRCLE 107 



THE SUN AND ITS ATTENDANT WORLDS . . .114 



SATURN AND HIS RINGS 119 



THE Q-REAT NEBULA IN ORION . . , * 120 



THE GREAT SPIRAL NEBULA . . .139 

 ORBITS OF THE EARTH AND MARS . .152 



