LIST OF ILLUSTRATIONS 



PLAN FOB A FARMSTEAD (Color Plate) Frontispiece 



PAGE 



ROCK WEATHERING AND THE PROCESS OF SOIL FORMATION 16 



THE SOIL PROVINCES AND SOIL REGIONS OF THE UNITED STATES (Color Map) . . 20 



THE SOIL SEPARATES AS MADE BY MECHANICAL ANALYSIS 21 



INSPECTING AND SAMPLING THE SOIL 22 



A SOIL AUGER 32 



RATE AND HEIGHT OF CAPILLARY RISE OF WATER IN SOILS OF DIFFERENT TEXTURE 34 



THE EASE OF SEED-BED PREPARATION DEPENDS ON CONDITION OF SOIL 37 



SOIL FERTILITY BARREL 50 



SOIL FERTILITY PLATS 52 



EFFECT OF TOP DRESSING MEADOWS WITH COMMERCIAL FERTILIZER 64 



EFFECT OF FERTILIZERS ON THE GROWTH OF SWEET CLOVER 65 



EFFECT OF COMMERCIAL FERTILIZER ON WHEAT ON A POOR SOIL 67 



SOIL FERTILITY PLATS 70 



MODERN CONVENIENCE FOR CONVEYING MANURE 83 



PILES OF MANURE STORED UNDER EAVES OF BARN. 85 



SPREADING MANURE FROM WAGON, OLD WAY 88 



THE MODERN MANURE SPREADER 92 



RYE TURNED UNDER FOR SOIL IMPROVEMENT 95 



THE GROWTH OF RED CLOVER ON AN ACID SOIL AS AFFECTED BY LIME 99 



BEETS GROWN WITH AND WITHOUT LIME 101 



THE OLD WAY OF SPREADING LIME 107 



A MODERN LIME SPREADER IN OPERATION 108 



A LIME CRUSHING OUTFIT SUITABLE FOR THE FARMER 109 



DETAILS OF CONSTRUCTION OF A FARM LIMEKILN 110 



MAP SHOWING MEAN ANNUAL RAINFALL FOR ALL PARTS OF THE UNITED STATES 112 



EFFECT OF LITTLE, MEDIUM, AND MUCH WATER ON WHEAT 115 



ORCHARD WELL CULTIVATED TO PREVENT EVAPORATION 118 



WATER ISSUING FROM AN UNDERGROUND DRAIN 122 



A DEEP TILLING DOUBLE-DISK PLOW 125 



A BADLY ERODED FIELD 127 



DETAILS OF A GOOD SEED BED 130 



TERRACING AS A MEANS OF PREVENTING EROSION 132 



ANOTHER WAY TO STOP EROSION 133 



AN ATTRACTIVE FARM HOUSE 140 



PLANS OF A FARM HOUSE 141 



A GOOD TYPE OF BARN 142 



INTERIOR OF A Cow STABLE 143 



ECONOMICAL AND PRACTICAL MANURE SHED 144 



PLANS FOR A CIRCULAR BARN 145 



CROSS-SECTION SHOWING VENTILATION AND STABLE FLOOR OF CONCRETE 146 



ENSILAGE CUTTER AND FILLER 147 



A GOOD IMPLEMENT SHED 149 



PLAN OF CONCRETE FOUNDATION OF CORN CRIB 150 



INTERIOR OF DOUBLE CORN CRIB 151 



Two VIEWS OF IOWA GABLE ROOF HOG HOUSE 153 



A CONCRETE BLOCK ICE HOUSE 154 



How TO CONSTRUCT A CONCRETE WATER TANK 155 



A "T" CONNECTION FOR HEAVY WIRE LIGHTNING RODS 156 



A GOOD TYPE OF FARM FENCE 159 



A GOOD TYPE OF WALKING PLOW 161 



(11) 



