Observations On the Geology of the United States of America

William Maclure's 'Observations on the Geology of the United States of America' is a comprehensive study of the geology of the United States, focusing on the effect of the decomposition of rocks on soil fertility. The book provides valuable insights into the geological makeup of the country, and how it relates to agriculture and land use. Maclure's work is essential reading for anyone interested in the natural history of America.

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