CONTENTS 



CHAP. PAGE 



I. The natural history of the soil ... 1 



II. How PLANT FOOD IS MADE IN THE SOIL . . 12 



III. What is soil fertility and how may it be 



ATTAINED ? 27 



IV. Soil fertility and systems of husbandry . 43 



V. The raising of the fertility limit ... 64 



VI. The chequered career of the clays . . 86 



VII. The rise op the sands 101 



VIII. The moor— what shall it become? . . .119 

 IX. Conclusion 124 



Bibliography 126 



Index .127 



