CONTENTS 



PREFACE V 



I. INTRODUCTORY . . t I 



II. PIONEER-LABOURERS - c 1$ 



III. SOIL-MAKERS ...... 29 



IV. SOIL-CARRIERS . * 41 

 V. SOIL-BINDERS . . . t JO 



VI. FIELD-LABOURERS i t 60 



VII. FIELD-LABOURERS <*?/**/ . . 73 



VIII. WATER ... 90 



IX. DESERTS . t 105 



X. ROOTS . 124 



XI. FOOD FROM THE SOIL. . . , 139 



XII. LEAVES AND THEIR WORK . . 157 



XIII. CLIMATE . t . 177 



XIV. BLOSSOM AND SEED . , . . .190 

 XV. THE GOLDEN RULE FOR FLOWERS . . . 2o8 



XVI. GUESTS WELCOME AND UNWELCOME. t t 227 



