View of Forestry Soils class, Sept. 1970. II yr students in their field work at Dunlap Observatory.

Surface view of Ah (mull) in gray-brown luvisol at Dunlap Observatory, Richmond Hill; cf. slides # 223 & 226.

Root system of Acer saccharum (sugar maple) in sandy loam till; dystric brunisol (despite Ae!); tree approx. 85yrs old; n.b. "tight" root system.

Extracted portion of C to show laminations in silt loam, roots and gleying; this is from profile in slide # 228

Platy structure in silt loam in Bm merging into C; close-up of soil profile in slide # 228

Showing L, H, Bm horizons of profile in slide # 228, in Burt Twp. Plonski Forest, near Swastika.

Profile of a eutric brunisol in lacustrine silt loam with Ck; in Burt Twp. Plonski Forest, near Swastika.

Windthrow in a till (sandy loam) at Dorset under white pine; n.b. inversion of horizon; windthrow was after forest fire; intensity of heat in burning root shown by firing at right. Monolith at U.T.

Ah of the profile in slide # 223; n.b. granular structure and roots; a typical mull.

Root in the Bt of gray-brown luvisol profile, slide #223.