Fig. 2. Determinations of wet-end moisture contents () at which deviation from fractal scaling of water retention occurs for four soils. The vertical axis is the tension (h). The open circles are theory, the solid circles experiment. The fractal dimensionality for the pore space was determined in Hunt and Gee (2002a) from the particle-size distribution and the porosity, and the air-entry head (h_A) was used as an adjustable parameter. The wet-end deviations from fractal scaling are indicated with arrows. Two soils from Hunt and Gee (2002a) are used for which the wet-end deviation could clearly be seen, FLTF D11-06 (Fig. 2a) and VOC 3-0652 (Fig. 2b). For a number of the ITS soils, such as 2-2227 shown here, _w was better determined from the pressure applying Eq. [8] as experimental values of h tend to rise above the theoretical curve at large .