CONTENTS. 



BOOK I. 



Of the Principal Circumstances connected with Vegetable 

 Life which illustrate the Operations ok Gardening . . 5 



CHAPTER I. 



germination. 



The Nature of » Seed. — Its Duration. — Power of Growth. — 

 Causes of Germination. — Temperature. — Light. — Humidity. 

 — Chemical Changes 1 



CHAPTER IL 



GROWTH BY THE ROOT. 



Roots lengthen at their Points only. — Absorb at that Part 

 chiefly. — Increase in Diameter like Stems. — Their Origin. — 

 Are feeding Organs. — Without much Power of selecting tbwr 

 Food. — Nature of the latter. — May be poisoned. — Are con- 

 stantly in Action. — Sometimes poison the Soil in which they 

 grow. — Have no buds. — But may generate them . . . 10 



CHAPTER III. 



GROWTH BY THE STEM. 



Origin of the Stem. — The Growing Point. — Production of 

 Wood, Bark, Pith, Medullary Rays. — Properties of Sap-wood, 

 Heart wood, Liber, Rind, &c. — Nature and Office of Leaf- 

 budp -Embryo-buds. — Bulbs. — Conveyance of Sap, and its 

 Nat .re 22 



