Subject(s): nature's methods of soil management, agriculture of the nations which have passed away, practices of the orient, agricultural methods of the Occident -- part played by soil fertility in agriculture, nature of soil fertility, restoration of fertility -- Indore process : raw materials needed, pits v/s heaps, compost, storage of Humus -- Practical applications of the Indore process : Coffee, tea, sugar-cane, cotton, sisal, maize, rice, vegetables, vine -- Developments of the indore process : Green manuring, safeguarding of nitrate accumulations, production of humus, safeguarding of nitrates followed by the manufacture of humus, reform of green manuring -- Development of the Indore process- grass land management, developments of the indore process- utilization of town wastes -- Health, indisposition and disease in agriculture -- Soil aeration : Soil arearion factor in relation to grass and trees, roots system of deciduous trees and of evergreens, harmful effects of grass, effect of aeration trenches on young trees under grass, forest trees and grass, aeration of the sub soil -- Some disease of the soil : soil erosion, formation of alkali land -- Retreat of the crop and the animal before the parasite : Human and disease resistance, mycorrhizal association and disease, investigations of tomorrow -- Soil fertility and national health -- agricultural research: criticism of present day agricultural research, successful example of agricultural research -- Organic agriculture -- Soil fertility -- Soil deterioration -- Soil air relations -- Plant condition -- Composts