CONTENTS 



CHAPTER 1 

 INTRODUCTION 



Outline of Modern Chemical Theory— Atomic Theory— Properties of 

 Oxygen, Hydrogen, Carbon, Nitrogen, Sulphur, Phosphorus, Cal- 

 cium, Potassium, Sodium, Magnesium, Iron, Chlorine, Silicon 



Pp. 1-23 



CHAPTER II 

 THE ATMOSPHERE 



Physical and Chemical Properties of the Air— Variations in its 

 Constituents Pp. 24-32 



CHAPTER III 

 THE SOIL 



Soil and Sub-soil — Transported and Sedentary Soils— Formation of 

 Soils — Various Agencies leading to Formation of Soils — The 

 Constituents of Soils — Chemical Changes occurring in Soils — 

 Movements of Water in Soils — Nitrification — Fixation of Nitrogen 

 in Soils — Soil Gases — Losses by Drainage — Analysis of Soils 



Pp. 33-6] 



CHAPTER IV 

 NATURAL WATERS 



Rain Water— Spring Water — Hard and Soft Water— River Water— Sea 

 Water— Relations of Water to Heat — Specific Heat— Latent Heat 



Pp. 62-76 

 ^ b 



