This interesting thematic map illustrates the geology of the world with a color key identifying 6 different types of geologic formations. Along the bottom is a chart of the world's mountain ranges, also color-coded, which graphically depicts the volcanoes. An inset shows the "supposed Antarctic Continent," and another depicts the comparative heights of continents & culminating points of mountains. Hitchcock was an eminent professor of chemistry and natural history at Amherst College and was selected in 1830 to conduct a general survey of the Commonwealth of Massachusetts and published the first major American geological work.

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Condition: A

Folding, as issued with a few unobtrusive spots, overall very good.