CONTENTS. 



Page 



INTRODUCTORY LESSON I 



View of the Heavens % 5 



On the Sun 9 



Mercury 15 



Venus 2O 



TheEarth . - > - 2* 



Mars f 31 



Jupiter . 34 



Saturn - 38 



Georgtum Sidus, or Herschel . 41 



TheMoon .- 4S' 



Comets 51 



Projection and' Gravity 55. 



Zclipses of the Sun and Moon 62: 



The Fixed Stars, with Reflections on the Immensity 



of the Universe G8 



The Air and Atmosphere , .... 77 



Winds 91 



Sounds and Echoes *".*. 98 



Evaporation, Ruin, Hail, Snow, Mists, and Dew 108 



Frostandlce 115- 



Electricity 122, 



Thunder and Lightning 135 



The Ignis Fatuus r 14* 



The Aurora Borealis 149 



Light and Colours 155- 



Tke Rainbow . _ ... v M v.r _' W* 



