CONTENTS 



VOLUME I 



SECTION L GENERAL ASPECTS OF COMMERCIAL 

 GARDENING 



Page 



Introductory The Seed Trade The Bulb Trade The Hardy-plant 

 Trade The Nursery Trade Market Gardening and Market 

 Growing The Florist Trade Tree and Shrub Trade Japanese 

 Gardening 1 



SECTION II. THE SCIENCE OF PLANT GROWING 



1. SIMPLE AND COMPLEX CELL LIFE. Simple Cell Life - 20 



2. STRUCTURE OF THE HIGHER PLANTS. The Growth of a Cell 

 Changes in Cell Walls Various Forms of Cells Plant Tissues 

 Uses of Different Cells - - 22 



3. PLANTS OF DISTINCTIVE CHARACTER. Plants with Chlorophyll 

 Plants without Chlorophyll Desert Plants Clammy -leaved 

 Plants Insectivorous Plants Climbing Plants - 26 



4. THE ROOT AND ITS WORK. The Primary Root Importance of 

 Primary and Fibrous Roots Relation of Soil to Roots Water 

 and Air Roots Tuberous Roots Work of the Roots The 

 Food absorbed by Roots Contractile Roots - - 29 



5. THE STEM AND ITS FUNCTIONS. The Seedling Stem The Growth 

 and Thickening of the Stem The Cambium Dicotyledonous 

 and Monocotyledonous Stems Bulbs, Corms, Tubers, and 

 Rhizomes - - 35 



6. LEAVES AND THEIR WORK. Seed Leaves and True Leaves 

 Structure and Contents of a Leaf Work of a Leaf Forms of 

 Leaves and their Clothing Arrangement of Leaves Modified 

 Leaves The Fall of the Leaf - - 42 



7. MOVEMENTS OF WATER AND FOOD PRODUCTS IN PLANTS. Root 

 Pressure Water of Transpiration Transport of Food Materials 

 Water Plants Sap in Winter Bleeding - - 52 



