. Soils, their properties and management. Soils. s Fig. 25. — The apparatus used by the United States Bureau of Soils for determining the penetration of soils. (C) is mechanically packed soil; (A), steel point; (P), pail for receiving sand from funnel (F). (W) is a counterpoise. much in the accuracy of the determination as in controlling physical conditions. The cohesion of a soil depends very much on the handling it has received in the prepara- tion, in the amount of water that is added, and in the amount and length of time of drying. Natural granu- lation cannot be secured. The Bureau of Soi
. Soils, their properties and management. Soils. s Fig. 25. — The apparatus used by the United States Bureau of Soils for determining the penetration of soils. (C) is mechanically packed soil; (A), steel point; (P), pail for receiving sand from funnel (F). (W) is a counterpoise. much in the accuracy of the determination as in controlling physical conditions. The cohesion of a soil depends very much on the handling it has received in the prepara- tion, in the amount of water that is added, and in the amount and length of time of drying. Natural granu- lation cannot be secured. The Bureau of Soils attempted to obviate these difficulties by mechanical sifting and packing, but the results were abnormal, due to the sift- ing process. As a consequence, most cohesion results iPuclmer, H. Yergleiehende UntersuchungeE tiber die Kohareszenz versehiedener Bodena-rten. Internat. Mitt, fur Bodenkunde, Band III, Heft 2-3, Seite 141-239. 1913. N. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lyon, T. L. (Thomas Lyttleton), 1869-1938; Fippin, Elmer O. (Elmer Otterbein), 1879-1949; Buckman, Harry Oliver, 1883-. New York, Macmillan
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