Soils and Their Properties (Classic Reprint) - Hardcover

Inhaltsangabe

Excerpt from Soils and Their Properties

The recognition of the work done by micro-organisms marks a most important advance in our knowledge of the phenomena involved in the metabolism (gr. Metabole, change) of the' soil. Hitherto, investigation has been directed rather to the determination of the immediate effects of soil metabolism in promoting the nutrition of plants. But it is at least possible that the biological fac tors in metabolic activity may eventually be proved to be not less potent than the physical and chemical agents in effecting the disintegration of rocks, and thus in restoring to the soil those mineral ingredients which are undergoing incessant loss.

Our knowledge of the biology of the soil is hardly yet in a sufficiently settled condition to be made the subject of an elementary manual. All that is attempted, there fore, In 'the following pages is to trace soils back to their parent rocks, to indicate some of their more important physical and chemical properties, and to give a brief account of the distribution of soils within the British Isles. It is proposed to follow this Volume with another, in the same series, upon the practical management of the soil.

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