METHODS of soil investigation are now so numerous and varied that a volume including some description of the more important of these fills a definite gap. The features of special soil types are not dealt with, but as a preliminary the procedures adopted in soil surveying and sampling are outlined, together with methods of classification and mechanical analyses. Analytical methods for the determination of various soil constituents are given in detail, special attention being devoted to the preparation of equipment. The physics and biology of the soil are not dealt with so fully, but sufficient is given to direct the attention of the student to the main aspects of the problems involved.
Soil Characteristics: a Field and Laboratory Guide.
By Prof. Paul Emerson. Pp. x + 222. (New York: McGraw-Hill Book Co., Inc.; London: McGraw-Hill Publishing Co., Ltd., 1925.) 12s. 6d. net.
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Soil Characteristics: a Field and Laboratory Guide . Nature 119, 596 (1927). https://doi.org/10.1038/119596c0