CONTENTS 



PART I 

 ELEMENTS OF AGRICULTURE 



INTRODUCTION 



SOILS 



CHAPTER I 



CHAPTER II 



How soils are formed 



Glacial action 



The atmosphere . 



Variations of temperature 



Vegetation 



Wind, sea and rivers 



Distribution of soils 



Local and transported soils 



Surface soil and subsoil . 



Earth worms 



Constituents of soil 



Sand 



Clay ... . 



Lime . . . 



Vegetable matter 



Stones 



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