This large and informative book is the report of the survey for the Fourth Geological District and contains more than 200 illustrations including 19 beautiful lithographic plates at the back of the text and several more in the text. 683 pp. The volume is complete with all plates and the large folding geological map present. Hardbound in original brown cloth with fossil graphic on front cover.

Bound into the book is Hall's important Geological Map of the Middle and Western States ( 32 x 22.5"). This colorful geological map blends science and the art of cartography. It is based on the surveys of J. Calvin Smith and identifies 23 geological units using hand applied colors. The map covers the region of the United States from its western boundary along the Mississippi River, east to Long Island and the Atlantic. Also included is the folding map (Trigonometrical Survey of the Falls of Niagara), views of New York (including Saratoga Springs and Howe's Cave), many early drawings of fossils, and numerous plates showing geological and topographical features, cross-sections and profiles, most in color. The large Plate VIII "Natural Section Exhibiting Broken Strata and Intermingled Drift" is a folding cross-section of a portion of Lake Erie's shoreline that graphically explains stratigraphy and glacial drift theory. Editions of this book with the map present are very scarce.

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Condition: B

The map is in near fine condition, and is issued folding with vivid color on a clean sheet. There is faint toning with two tiny splits at fold intersections. Contents are generally very good with a few profiles having long fold separations (including a complete separation of the Lake Erie plate) and a few partially detached pages. Both covers are detached and the spine has perished.