Based on an extensive survey of 200 areas and a detailed examination of soil and forest composition and increment on 37 sample plots, a description is given, with profile and data on soil properties, of skeletal (lithosols and regosols), alluvial, melanized raw humus, micro-podzols, half bog, low moor peat, high moor bog, and tundra forest soils carrying White and Black Spruce, Tamarack, Paper Birch, Aspen, Tacamahaca Poplar with Sitka Alder, Willows, Alaska Rose etc. and mosses and lichens (named). Spruce can yield 15, 000 bd. ft./acre on loessal uplands and permafrost-free terraces. A growth of 0.3 cords/year on skeletal soils is attributed to occult precipitation due to day/night temperature differences.