CONTENTS 



PAGE 



CHAPTER VI 



STRUCTURE OF THE SHOOT 



The environment of the root and shoot. Dissection of a leaf. 

 Epidermis, stomata, skeleton, green tissue. The tissues of 

 a stem. Mechanical supporting tissues. Vascular bundles. 

 Annual rings. Cork. Separation-layer of the leaf. Leaf -fall 64 



CHAPTER VII 



WORK OF THE SHOOT 



Sensitiveness of the shoot. Negative geotropism. Force 

 exerted by the growing shoot. Heliotropism. Etiolation. 

 The work of the leaf. Photosynthesis ; the formation of starch. 

 Chlorophyll. Functions of the vascular bundles. Crude sap 

 and elaborated sap. Storage of food ..... 74 



CHAPTER VIII 



WORK OF THE SHOOT (continued) 



Transpiration. The Potometer. Protection of stomata. 

 Wilting. Turgidity. Root-pressure. Force of transpiration. 

 Air-channels in a shoot . . . . . . 91 



CHAPTER IX 



BUDS AND BRANCHES 



The development of shoots. The Brussels Sprout. Branching. 

 Leaf rosettes. Lilac, Privet, Horse-Chestnut. Sycamore. 

 Beech. Pine. Dormant buds. Stool shoots. Adventitious 

 buds. Shedding of leaves and branches . . . .103 



CHAPTER X 



HIBERNATION ; THE STRUCTURE OF MODIFIED 



SHOOTS 



Annuals and Ephemerals. Biennials. Perennials. Rhizomes. 

 Tubers. Corms. Bulbs. Contractile roots. Droppers. 

 Elongated bulbs. Vegetative reproduction . . . .123 



CHAPTER XI 



MOVEMENTS AND ATTITUDES OF PLANTS 



Nutation. Twining plants. Tendrils. Sun and shade positions 

 of leaves. Phyllodes and phylloclades. Leaf-mosaics. Sleep- 

 movements of leaves. Movements of flowers and fruits . 142 



