Profile in central Washington (Horse Heaven Hills), n.b. light brown colour with little horizon differentiation; wheat yield 10 bu/ac. Entisol, P, C, HC, D.

Photo of the boundary between two ages of pumice deposit in Oregon from Mount Mazama (Crater Lake, ca.1500yrs); lower dark pumice is B horizon of buried profile. n.b. gopher hole. Entisol, HC, C, E, D

Profile in coarse loamy sand (pumice) at Antelope Tree Farm of Weyerhaeuser; Lapine series ;n.b. lower buried old B see Slide # 72. Entisol, P, C, E, D.

Photo of upper profile in coarse loamy sand (pumice) at Antelope Tree Farm; Lapine Series. cf. Slides # 72 & 73. Entisol, P, C, G, D.

Well-developed Bh under Balsam fir in central Quebec; humus has formed a firm `pan'. Spodosol, P, HB, F, D.

Cumulative Texture Curves for Profile Slide #21 Horizons, Inceptisol, F, T.

Cumulative texture curve for profile Slide #27. Spodosol, F, T.

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.