Table of Contents. 



PAGE 

 Preface iii 



I. The Soil ..! I 



II. Soil Management or Control 4 



III. Soil Analysis and the Historical Methods of Soil Investigation 8 



IV. The Plant-Food Theory of Fertilizers 16 



V. The Dynamic Nature of Soil Phenomena 18 



VI. The Film Water 24 



VII. The Mineral Constituents of the Soil Solution 31 



VIII. Absorption by Soils 59 



IX. The Relation of Plant Growth to Concentration 70 



X. The Balance Between Supply and Removal of Mineral Plant 



Nutrients 75 



XI. The Organic Constituents of the Soil Solution. 79 



XII. Fertilizers 105 



XIII. Alkali no 



Index 127 



