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Preparation of Thin Sections from Moist Organic Soil Materials¹

Soil Survey Division Wisconsin Geological and Natural History Survey, and Associate Professor of Soils, respectively

ABSTRACT

Micromorphologic investigation of Histosols requires use of thin sections prepared in such a way as to minimize shrinkage and disruption of natural soil fabric. A method which meets these requirements is described. Moist samples are impregnated with Carbowax 6,000, mounted with Castoglas, and ground and polished by special techniques. Little shrinkage or destruction of soil fabric occurred in thin sections prepared by this method from a variety of organic soil materials.

¹ Contribution from the Soil Survey Div., Wisconsin Geological and Natural History Survey and the Soils Department, University of Wisconsin, Madison. Supported in part by the Research Committee of the Graduate School from funds supplied by the Wisconsin Alumni Research Foundation. This note is published with the permission of the Director, Wisconsin Geological and Natural History Survey and the Director of the Wisconsin Agr. Exp. Sta.

Received for publication August 7, 1964. Accepted for publication September 10, 1964.