CONTENTS 



CHAPTER 



i HISTORY OF DRY-FARMING ..... 3 



ii SOME POINTS IN PRACTICE ..... 39 



in THE CONSERVATION OF SOIL MOISTURE . 62 



iv RAINFALL AND EVAPORATION .... 87 



v THE PROBLEM OF TILLAGE ..... 106 



vi THE CAMPBELL SYSTEM ...... 14-5 



vn DRY-FARMING ZONES ...... 163 



vin DRY-LAND CROPS ....... 207 



ix THE TRACTION-ENGINE IN DRY-FARMING . 263 



x DRY-LAND EXPERIMENTS . 279 



