

CONTENTS. 



Section i^irst. 



CHAPTER I. 



PAGE 



Introduction 11 



CHAPTER II. 



The Atmosphere and its Carbon .^ 14 



CHAPTER III. 



Hydrogen and Oxygen 21 



Nitrogen 22 



Ammonia 23 



CHAPTER IV. 



Earthy Matter 27 



AlkaUes 28 



Potash 28 



Soda 29 



Lime 29 



Magnesia 30 



Acids — Phosphoric Acid 30 



Sulphuric Acid 31 



Silicic Acid, or Silica 32 



Neutrals — Chlorine 33 



Oxide of Iron. , 33 



CHAPTER V. 



Growth 34 



CHAPTER VI. 



Starch, Woody-Fibre, Gluten, etc 39 



Animals ... 42 



CHAPTER VII. 

 Location of the Different Parts, and Variations in the Ashes 



of Plants : 4G 



CHAPTER VHL 



Recapitulation 49 



