CONTENTS 



CHAPTER I. 



PAGE 



Historical Introduction — Growth of Plants : Van Helmont's 

 Theory — TuU's Theory — Bonnet's Discovery — Earl 

 Dundonald's Theory — Eiuhof and Thaer's Theory — 

 De Saussure's Theory — Davy's Theory — Liebig's Dis- 

 coveries and Theory, etc. ... . . . 1 



CHAPTER II. 



Physiology of Plant — Organic Matter— The Function of 

 Leaves — Chlorophyll — Transpiration — Root-absorption 

 — Nitrogen-absorption — Circulation .... . . 8 



CHAPTER III. 



Agronomy or the Chemistry and Bacteriology of Soils 

 — Various SoUs — Soils for Various Fruit Trees — 

 Aeration of Soils — Nitrogen — Jamieson's Investigations 

 — Bacteria of Soils — Mineral Matter of SoUs — Humus 

 —Water 19 



CHAPTER IV. 

 Sterile Soils — Various Sterile Soils — Soil Exhaustion ... 45 



CHAPTER V. 



Composition of Fruit Trees— The Botanical Names of Trees 



and Natural Orders — Analyses of their Ashes ... 51 



