1911 Encyclopædia Britannica, Volume 18… (1911)
“ Soil.—The soil of south-west and south-east Michigan is for the most part a dark clay loam or muck; in the north central part of the lower peninsula it is a light sandy loam, along the Huron shore it is heavy with blue clay, in the mining districts of the north-west the rocks are usually either barren or very thinly covered; and elsewhere in the state the soil is generally rich in a variety of mineral elements, and varies chiefly in the proportions of vegetable loam, sand or gravel, and clay. ”
