The soil-point method for directly estimating the water-supplying power of a soil in the field

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Abstract
1. Attention is drawn to Mason's modification of Livingston's soilpoint method of directly estimating the water-supplying power of a soil in situ. Mason used ordinary lead writing pencils as soil-points.2. This method, heretofore tested only in the laboratory, has been employed by the writer in an ecological field study. Details of the procedure adopted are described, and the reliability of the method is indicated by the presentation of a series of mean results with their corresponding probable errors.3. It is concluded that the method is practicable; it should prove of considerable usefulness to workers in ecology.

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