vi CONTENTS 



CHAPTER IX 



Nitrogenous Fertilizers 205 



CHAPTER X 



Phosphate Fertilizers 221 



CHAPTER XI 



Potash Fertilizers 231 



CHAPTER XII 

 Lime 240 



CHAPTER XIII 

 Farm Manure 257 



CHAPTER XIV 

 Soil and Fertilizer Analysis 273 



CHAPTER XV 



Insecticides and Fungicides 281 



CHAPTER XVI 

 The Gas Engine 298 



PART III 



THE ANIMAL 



CHAPTER XVII 

 The Chemistry of Animal Physiology 307 



CHAPTER XVIII 

 Food and Digestion 327 



CHAPTER XIX 

 Milk and Dairy Products 342 



