CONTENTS. 



' HAVTF.R PACK 



I. THK CONSTITUENTS OF PLANTS 7 



II. ORIGIN AND FORMATION OF SOILS 18 



III. COMPOSITION OF SOILS 29 



IV. THE IMPROVEMENT OF SOILS 41 



_V. NATURAL MANURES 62 



VL ARTIFICIAL AND CONCENTRATED MANURES ; NI- 

 TROGENOUS MATERIALS 68 



VII. ARTIFICIAL AND CONCENTRATED MANURES ; PHOS- 

 PHATES 80 



VIII. ARTIFICIAL AND CONCENTRATED MANURES ; SU- 

 PERPHOSPHATES AND POTASH SALTS .... 90 



IX. ARTIFICIAL MANURES OR FERTILIZERS ; METHODS 



OF BUYING ; VALUATION ; FORMULAS .... 101 



X. THE ROTATION OF CROPS 113 



XI. THE SELECTION OF SEED ; FARM CROPS AND 

 THEIR CLASSIFICATION ; CEREALS ; GRASSES ; 

 PASTURES ; ROOTS ; TUBERS ; AND MARKET- 

 GARDEN CROPS 122 



XII. THE GROWTH OF ANIMALS ; THE CONSTITUENTS OF 

 ANIMALS AND ANIMAL FOOD ; THE CHARAC- 

 TER AND COMPOSITION OF FODDERS AND FEEDS, 137 

 5 



