6 CONTENTS*. 



CHAPTER IX. 



Improvement of the Soil by Animal and Vegetable 



Manures, 66 



CHAPTER X. 



Improvement by Mineral Manures, 78 



CHAPTER XI. 



Improvement by Draining, 92 



CHAPTER XII. 



Operations of Draining, 98 



CHAPTER XIII. 



Principles of Tillage, 112 



CHAPTER XIV. 



Operations of Tillage, 124 



^1. The Plough, 124 



^ 2. Rules for Ploughmen, 141 



^3. The Harrow, 144 



^ 4. The Roller, 148 



§ 5. The Cultivator, 150 



§ 6. The Drill Barrow, 151 



CHAPTER XV. 



Alternation of Crops, 152 



CHAPTER XVI. 



Root Culture, 163 



CHAPTER XVII. 



On substituting Fallow Crops for naked Fallows . 169 



CHAPTER XVIII. 



On the Adaptation of particular Crops to certain 



Soils, 182 



CHAPTER XIX. 



Effects of Cropping and Manuring, 186 



CHAPTER XX. 



Rules and Suggestions in Farming, 194 



