Chapter 1: Earths and Soils
- The composition and nature of soils
- Earths are derived from rocks
- The crust of the earth
- Igneous unstratified rocks
- Sedimentary non-fossiliferous rocks
- Fossiliferous rocks
- Davy on rocks and soils
- Soils and earths
- Surface soil and subsoil
- Rock geology and surface soils
- The nomenclature of soils
- Naming soils
- Earths of transportation
- Alluvial soil
- Diluvial soils
- Peat soils
- Soils and plant nourishment
- The fertility of soils
- Soils and the food of plants
- Humus decayed woody fibre
- Humus and plant nourishment
- Soils and minerals
- Plant foods: carbon, oxygen, hydrogen, nitrogen
- Carbon and vegetables
- Atmospheric nitrogen and oxygen
- Oxygen in plants
- Hydrogen in plants
- Nitrogen in plants
- Water as a plant food
- Inorganic plant foods
- The alkalies, earths and acids
- Mechanical and chemical nature of soils
- Water absorbtion by soils
- Soil fertility and salts
- Magical irrigation
- Phosphoric acid
- Hot and cold soils
- Dry soils and colors
- Moisture in soil and subsoil
- Usefulness of soils to plants
- The value of soils to the cultivator
- Plants as soil indicators
- Soil types for cultivators
- Plant indicators of argillaceous soils
- Plant indicators of Calcareous soils
- Plant indicators of Siliceous soils
- Plant indicators of Ferruginous soils
- Plant indicators of acid soils
- Plant indicators of Saline soils
- Plant indicators of Aquatic soils
- Plant indicators of very dry soils
- Reliability of plant indicators
- Chemical analysis and testing of soils
- Specimens for chemical analysis and testing of soils
- The most fertile soils - analysis and testing
- Soil investigation from ashes - analysis and testing
- Investigation of soil salinity - analysis and testing
- Analysis and testing of soil ingredients
- Results of soil testing analysis
- Testing the physical properties of soils
- Testing the specific gravity of a soil
- Testing clay and sand in any soil
- Testing the presence of calcareous matter in soil
- Testing the presence of organic matter in soil
- Testing the presence of metals in soil
- Testing the presence of salt in soil
- Testing the capacity of a soil for retaining wate
- Soil treatment for cultivation
- Soil amelioration textures
- Cultivation of friable soils
- Mechanical cultivators
- Mechanical pulverisation
- Roofs and pulverisation
- Capillary action and pulverisation
- Pulverisation and soil temperatore
- Pulverisation and vegetable food
- Pulverisation and aeration
- Pulverisation depths
- Pulverisation and tillage
- Pulverisation and moisture retention
- Mechanical consolidation of soils
- Soil aeration by mechanical and chemical means
- The mechanical effect of aeration
- Air and soil chemistry
- Carbon, nitrogen and soil humus
- The disintegration of soils
- Soil additives
- Soil improvement additives
- Soil additives and crops
- Plant incineration
- Improvers for clay soils
- Improvers for chalky soild
- Improvers for marl soild
- Improvement of peaty soils
- Burning and soil improvement
- Objections fo burning
- Soil improvements by burning
- Soil water abundance
- Draining stagnant water from soils
- Springs in retentive soils
- Flooding and soils
- Irrigation and soils
- Mechanical action of irrigation on soils
- Chemical action of irrigation on soils
- The improvement of land by irrigation
- Weather and soils
- Solar influence on soil warming
- Shelter plantations
- Shading and plant growth
- Succession cropping cultivators
- Crop rotation
- Rotation and crop exhaustion
- Improvement of poor soils
- Natural improvement of soils
- Influence of rotations in destroying insects and weeds