6

III. THE MOISTURE OF THE SOIL 9

IV. HOW THE WATER RISES IN THE SOIL 13

V. DRAINING THE SOIL 14

VI. IMPROVING THE SOIL 17

VII. MANURING THE SOIL 21

CHAPTER II. THE SOIL AND THE PLANT

VIII. ROOTS 25

IX. HOW THE PLANT FEEDS FROM THE SOIL 29

X. ROOT-TUBERCLES 30

XI. THE ROTATION OF CROPS 33

CHAPTER III. THE PLANT

XII. HOW THE PLANT FEEDS FROM THE AIR 39

XIII. THE SAP CURRENT 40

XIV. THE FLOWER AND THE SEED 42

XV. POLLINATION 46

XVI. CROSSES, HYBRIDS, AND CROSS-POLLINATION 48

XVII. PROPAGATION BY BUDS 51

XVIII. PLANT SEEDING 59

XIX. SELECTING SEED CORN 66

XX. WEEDS 69

XXI. SEED PURITY AND VITALITY 72

CHAPTER IV. HOW TO RAISE A FRUIT TREE

XXII. GRAFTING 78

XXIII. BUDDING 81

XXIV. PLANTING AND PRUNING 83

CHAPTER V. HORTICULTURE

XXV. MARKET-GARDENING 89

XXVI. FLOWER-GARDENING 108

CHAPTER VI. THE DISEASES OF PLANTS

XXVII. THE CAUSE AND NATURE OF PLANT DISEASE 122

XXVIII. YEAST AND BACTERIA 127

XXIX. PREVENTION OF PLANT DISEASE 129

XXX. SOME SPECIAL PLANT DISEASES 130

CHAPTER VII. ORCHARD, GARDEN, AND FIELD INSECTS

XXXI. INSECTS IN GENERAL 144

XXXII. ORCHARD INSECTS 152

XXXIII. GARDEN AND FIELD INSECTS 165

XXXIV. THE COTTON-BOLL WEEVIL 173

CHAPTER VIII. FARM CROPS

XXXV. COTTON