TABLE OF CONTENTS 



PART I. 



Page 



Introduction 1 



The Soil 1 



General Classification of Soils 3 



Elementary Composition of Plants and Their Sources 



OF Supply q 



Sources of Nitrogen 8 



Sources of Phosphoric Acid 9 



Sources of Potash 9 



Relation of Soil to Plants 10 



Soil Analysis 11 



Plants 13 



General Classification of Plants 14 



Duration of Life of Plants 14 



How Plants Grow, How They Feed, and How They Re- 

 produce 15 



Sexuality of Plants 17 



Crosses and Hybrids 20 



Rotation of Crops 22 



Intensive Gardening 25 



Forwarding Early Vegetables 28 



Hotbeds and Coldframes 29 



Garden Tools and Implements 32 



Soil Mulch 37 



(vii) 



