CONTENTS. 



XIU 



METABOLISM AND TRANSPORT OF MATERIALS. 



1. The Organic Compounds in Plants. 



Carbon Compounds, - 

 Metabolism in Living Plants, 



- 452 



- 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 Conversion 

 and Distribution of Materials. 



Respiration, ------ 491 



Development of Light and H eat, - - 496 



Fermentation, ------ 504 



GROWTH AND CONSTRUCTION OF PLANTS. 



1. Theory of Growth. 



Conditions and Mechanics of Growth,- - 510 

 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 Plants. 



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. 



1. Progressive Stages in Complexity of 

 Structure from Unicellular Plants 

 to Plant-bodies, - . - - 584 



2. Form op 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 



