CONTENTS. 



Pge 



THE AUTHOR'S PREFACE . x?ii 



INTRODUCTION. 



On the different degrees of enjoyment offered by the aspect of Nature 

 and the study of her laws 3 



Limits and method of exposition of the Physical description of the 

 universe . * . 42 



GENERAL VIEW OF NATURE. 



Introduction . . .67 



CELESTIAL PHENOMENA. 



Nebulae . 73 



Sidereal systems 77 



Our sidereal system 79 



The solar system 81 



Planets 82 



Satellites 86 



Comets 91 



Aerolites 105 



Zodiacal light .... 127 



