CONTENTS 



PAGE 



PART I. THE VEGETATIVE ORGANS 

 CHAPTER I 



THE GARDEN STOCK 



The organs of a plant ; roots, stems, leaves, flowers, fruits, 

 and seeds . . . . . . . . .it 



CHAPTER II 

 STRUCTURE AND GERMINATION OF SEEDS 



(a) Dicotyledons : Bean, Pea, Sunflower, Ash. Germination. 



(b) Monocotyledons : Wheat, Maize, Oat, Onion, Wild 

 Hyacinth, Germination . . . . . . .19 



CHAPTER III 



STRUCTURE OF ROOTS 



The tissues of a root. Epidermis, root-hairs, cortex ; stele, 

 vascular bundles, bast, cambium, and wood. Their arrange- 

 ment in a young root. Structure of old roots ; cork. Roots of 

 Monocotyledons ........ 34 



CHAPTER IV 



WORK OF THE ROOT 



Sensitiveness of the root. Geotropism. Sensitive region of 

 the root. Hydrotropism. Negative heliotropism. Respira- 

 tion. Regions of growth and curvature of the root. Origin of 

 root-branches. Growing-region of the stem. Root-hairs, their 

 structure and use ; the root-cap. Excretion by roots. Osmosis. 

 Water-cultures ........ 37 



CHAPTER V 



FORMS OF ROOTS 



Tap-roots and adventitious roots. Roots as storage organs. 

 Climbing, aerial, and aquatic roots. Suckers from roots. 

 Root-tubers of the Lesser Celandine . . . . -58 



