Photo of root system of red pine in calcareous waterlaid sand at Vivian; n.b. note Ca carbonate accumulations in lower soil these developed around old roots cf. Slide #79. Alfisol, P, C, D.

B horizon developed around successive root channels in calcareous sands at Vivian; n.b. water laid sand in C. Alfisol, HB, C, D.

Photo of regosol under sage brush in central Oregon. Aridisol, P, C, D.

Orthic podzol in sandy loam; N.B. intensity of horizon colouration and on left upper the Ae/H a sign of windthrow. Spodosol, P, C, WN, D.

Cutanic i.e. some modification in microstructure, podzol-regosol. Photo Canadian Department of Agriculture. Entisol, P, C, D.

Many water-laid depositions; N.B. distribution of roots and Forest Floor development. Photo Canadian Department of Agriculture. Entisol, P, M, WT, D.

Cryic orthic brown wooded. Photo: Canadian Department of Agriculture. Inceptisol, P, C, D.

Bisequum of a podzol developing in a gray brown podzolic in a calcareous material. Photo: Canadian Department of Agriculture: used in KAA's soil text. Alfisol, P, C, D.

Bisequum of a podzol developing in a gray wooded; N.B. the lower B of the gray wooded above a darker brown C(/). Photo: Canadian .Department of Agriculture. Alfisol, P, C, D.

Black solonetz, N.B. structure of columnar B and rounded tops. Photo: Canadian Department of Agriculture. Aridisol. P, S, D.