The Chemical Properties of Soil
Humus to the chemist is the final product of the disintegration of the organic substances of plant and animal tissues, but to the gardener and agriculturist it means a whole range of products between the raw material and humus proper. It will be convenient therefore to say something first of all about the processes that bring about this decomposition, particularly as recent work indicates that the by-products and intermediate products play an important part in determining both the structure and the fertility of soil.
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