CONTENTS 



CHAP. PAGE 



I. What is the soil made op? . . . 1 



II. More about the clay .... 9 



III. What lime does to clay . . 19 



IV. Some experiments with the sand . 22 



V. The part that burns away ... 33 



VI. The plant food in the soil ... 41 



VII. The dwellers in the soil . . . 53 



VIII. The soil and the plant ... 64 

 IX. Cultivation and tillage ... 82 

 X The soil and the countryside 100 

 XI. How soil has been made 116 



Appendix 128 



Index 132 



