LIST OF ILLUSTRATIONS 



Plan for a Farmstead (Color Plate) Frontispiece 



PAGE 



Rock Weathering and the Process of Soil Formation 34 



The Soil Provinces and Soil Regions of the United States {Color Map) . 38 



The Soil Separates as Made by Mechanical Analysis 39 



Inspecting and Sampling the Soil 40 



A Soil Augur 50 



Rate and Height of Capillary Rise of Water in Soils of Different Texture 52 



The Ease of Seed-bed Preparation Depends on Condition of Soil 55 



Soil Fertility Barrel 68 



Soil Fertility Plats 70 



Effect of Top Dressing Meadows with Commercial Fertilizer 82 



Effect of Fertilizers on the Growth of Sweet Clover 83 



Effect of Commercial Fertilizer on Wheat on a Poor Soil 85 



Soil Fertility Plats 88 



Modern Convenience for Conveying Manure 101 



Piles of Manure Stored Under Eaves of Barn 103 



Spreading Manure from Wagon, Old Way 106 



The Modern Manure Spreader ; no 



Rye Turned Under for Soil Improvement 113 



The Growth of Red Clover on an Acid Soil as Affected by Lime 117 



Beets Grown With and Without Lime 119 



The Old Way of Spreading Lime 125 



A Modern Lime Spreader in Operation 12(5 



A Lime Crushing Outfit Suitable for the Farmer 127 



Details of Construction of a Farm Limekiln 128 



Map Showing Mean Annual Rainfall for All Parts of the United States 130 



Effect of Little, Medium, and Much Water on Wheat 133 



Orchard Well Cultivated to Prevent Evaporation 136 



Water Issuing from an Underground Drain 140 



A Deep Tilling. Double-Disk Plow 143 



A Badly Eroded Field 145 



Details of a Good Seed Bed 148 



Terracing as a Means of Preventing Erosion 150 



Another Way to Stop Erosion 151 



Variations in Timothy 158 



Note the Variation in the Second Generation Hybrids (Wheat) 159 



The Ear-to-Row Test Plat with Corn Hcsked 161 



Variations in Yield of Potatoes from Selected Tubers 164 



Dangers of Continuous Cropping 167 



The Height of Stalks and Positions of Ears (Corn) 176 



Types and Varieties of Corn (Color Plate) 178 



Corn Acreage by States 179 



(21) 



