CONTENTS 



PAGE 



SECTION I. INTRODUCTION 1 



THE PLANT 7-53 



Section II. The parts of the flower. Plant families . 7 



Section III. Pollination 12 



Section IV. Germination of seeds 21 



Section V. Water for the plant 28 



Section VI. How plants get food from soil and air . .32 

 Section VII. How plants are propagated . . . . * 38 

 Section VIII. Improvement of plants 46 



THE SOIL 54-85 



Section IX. How the soil was formed. Kinds of soil . . 54 

 Section X. Suiting the crop to the soil 61 



Section XI. Moisture in the soil 65 



Section XII. Preparation and cultivation of the soil . . 70 

 Section XIII. Terracing and draining .... 74 

 Section XIV. How the soil becomes poor . . .82 



FERTILIZING MATERIALS AND FERTILIZERS . . . 86-115 

 Section XV. How trees and leguminous plants improve the 



sott 86 



Section XVI. Barnyard manure 93 



Section XVII. Commercial fertilizers 97 



Section XVIII. Calculating fertilizer formulas . . . 102 

 Section XIX. Suiting the fertilizers to the soil . . .108 

 Section XX. Lime 112 



FARM CROPS . 116-181 



Section XXI. Rotation of crops 116 



Section XXII. Corn 123 



Section XXIII. Selecting or judging seed-corn . . . 129 

 Section XXIV. Wheat, oats, rye, and barley . . .136 



is 



