Referring to Late-Glacial lake sediments at Mt. Kullen (NW Scania) studied by means of biostratigraphic and chemical methods the authors discuss the development of one of the lakes and the surrounding terrestric soils. For all constituents analysed in the sediments the annual deposition per unit area has been calculated. The decreasing supply of inorganic material during the Late-Glacial time is related to the development of a stable humus layer. The content of organic matter in the sediments may be due more to a variation of the soil erosion than to changes in the production of organic matter. Soil leaching during the mild Alleröd period is indicated and correlated with the vegetational development.