CONTENTS. 



XI 



METABOLISM AND TRANSPORT OF MATERIALS. 



Page 



1. The Organic Compounds in Plants. 



Carbon Compounds, 452 



Metabolism in Living Plants, ... 450 



2. Transport of Substances in Living 



Plants. 



Mechanisms for Conveyance to and fro, - 465 

 Significance of Anthooyanin 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. 



- 491 



- 496 



- 504 



Respiration, - , . . 

 Develo])ment of Light and Heat, 

 Fermentation, . . . - 



GROWTH AND CONSTRUCTION OF PLANTS. 



1. Theory of Growth. 



Conditions and Mechanics of Growth, - - 510 

 EfTects of Growing Cells on Enviiunment, - 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 iu 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, ... (;55 

 Procumbent and Floating Stems, - - (IfJl 



Climbing Stems, r,m 



Erect Foliage-stems, - - - - - 710 

 Resistance of Foliage-stems to Strain, Pres- 

 sure, and Bending, - - - . 724 

 Tlie 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 



