CONTENTS. 



Xlll 



METABOLISM AND TRANSPORT OF MATERIALS. 



1. THE ORGANIC COMPOUNDS IN PLANTS. 



Page 



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 B 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 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, - 7 04 



Remarkable Properties of Roots, - - 767 



