TABLE OF CONTENTS. 



ASTRONOMY. 



CELESTIAL objects seen 

 where they are not page 



Gravity possibly not instan- 

 taneous 



The solar spots 



Light 



A peculiar light 



The light and revolution of 

 comets . 



Acomet'stail 



Comets distinguished from 

 planets 



The little planets or aste- 

 roids 



Precession of the equinoxes 



Exact length of the year . . 



The earth's annual revolu- 

 tion an uncertain measure 

 of time 



The relative length of the 

 seasons 



The harvest moon 



Spring and neap tides 



Old and new style 



The golden number 



Easter day 



The Laws of Kepler 



The two greatest astronomi- 

 cal discoveries 



Universal influence of gra- 

 vity 



Obliquity of the ecliptic . . . 



Inequalities of the planetary 



orbits page 9 



Eccentricities of the plane- 

 tary orbits 9 



Stars of a variable lustre . . 10 

 Great weight of the solar in- 

 habitants 10 



The moon 10 



Lunar irregularities 11 



Date of the Hindoo astrono- 

 mical system 11 



Hindoo Yugs 11 



Density of comets, or the 



reverse 12 



Satellites of Jupiter 13 



Grand conjunction 13 



Number of stars 13 



The zodiac 13 



The Chaldean Cycle 13 



Theory of the milky way; or 



galaxy 13 



Comparative distance of the 



fixed stars 14 



Motion of what are called 



the fixed stars ... 14 



Binary systems 14 



Figure of the earth 14 



Length of the pendulum ... 14 

 Vibration and length of the 



pendulum 15 



8 'The French metrical sys- 

 9| tern 16 



