604 pp. Five pages of author ads follow text. Black-and-white illustrations. CONTENTS: Introduction; Physics of the Soil: Nature, Origin and Waste of Soil; Chemical and Mineral Nature of Soils; Soluble Salts in Field Soils; Physical Nature of Soil; Soil Moisture; Physics of Plant Breathing and Root Action; Movements of Soil Moisture; Conservation of Soil Moisture; Relation of Air to Soil; Soil Temperature; Objects, Methods and Implements of Tillage; Ground Water, Wells and Farm Drainage: Movements of Ground Water; Farm Wells; Principles of Farm Drainage; Practice of Underdrainage; Principles of Rural Architecture: Strength of Materials; Warmth, Light and Ventilation; Principles of Construction; Construction of Silos; Farm Mechanics: Principles of Draft; Construction and Maintenance of Country Roads; Farm Motors; Farm Machinery; Principles of Weather Forecasting: The Atmosphere; Movements of the Atmosphere; Weather Changes.
