CONTENTS. 



METABOLISM AND TRANSPORT OF MATERIALS. 



1. The Organic Compounds in Plants. 



Carbon Compounds, ----- 452 

 Metabolism in Living Plants, - - - 455 



2. Transport of Substances in Living 



Plants. 



Mechanisms for Conveyance to and fro, - 465 

 Significance of Anthocyanin in the Trans- 



Page 

 portations and Transformations of Ma- 

 terials: Autumnal Colouring of Foliage, 483 



3. Propelling Forces in the Conversio.v 

 AND Distribution of Materials. 



Respiration, . . . . 

 Development of Light and B eat, 

 Fermentation, - . - . 



491 

 496 

 504 



GROWTH AND CONSTRUCTION OF PLANTS. 



1. Theory of Growth. 



Conditions and Mechanics of Growth, - - 5 10 

 Effects of Growing Cells on Environment, - 513 



2. Growth and Heat. 



Sources of Heat : Transformation of Light 



into Heat, 517 



Influence of Heat on the Configuration and 



Distribution of Plants, - - - 523 



Measures for protecting Growing Plants 



from Loss of Heat, - . . . 528- 



Freezing and Burning, . . . . 539 



Estimation of the Heat necessary to Growth, 557 



3. Ultimate Structure of Pla.vts. 



Hypotheses as to the Form and Size of the 

 smallest Particles employed in the Con- 

 struction of Plants, - - - - 566 



Visible Constructive Activity in Protoplasm, 572 



PLANT-FORMS AS COMPLETED STRUCTURES. 



I. Progressive Stages in Complexity of 

 Structure from Unicellular Plants 

 to Plant-bodies, ... - 584 



2. Form of Leaf-structures. 



Definition and Classification of Leaves, - 593 



Cotyledons, 598 



Scale-leaves, Foliage-leaves, Floral-leaves, - 623 



3. Forms of Stem-structures. 



Definition and Classification of Stems : The 



Hypocotyl : Stems bearing Scale-leaves. 647 



Stems bearing Foliage-leaves, - - - 655 



Procumbent and Floating Stems, - - 661 



Climbing Stems, 669 



Erect Foliage-stems, 710 



Resistance of Foliage-stems to Strain, Pres- 

 sure, and Bending, .... 724 

 The Floral-stem, 736 



4. Forms of Roots. 



Relation of external and internal Structure 



to Function, 749 



Definition of the Root, . - . . 764 

 Remarkable Properties of Roots, - - 767 



