Stuttgart, Schweizerbart, 1848. 8vo (23.1 x 14.5 cm). Engraved frontispiece, 634 pp., one folded, partly coloured chart with geological profiles; one large, folded, chromolithographed geological map with 16 different colours. Contemporary half calf over floral patterned boards. Spine rich gilt with floral ornaments, gilt-rolled lines and title. Green endpapers. Speckled edges.

Rare early geological monograph on the geology, palaeontology and mineralogy of the European part of Russia in the only German edition, translated and corrected by the famous German geologist Gustav [von] Leonhard (1816-1878). DSB, for all three authors: "Not only did the two geologists - who were intermittently joined by Keyserling - verify Murchison's systems for European Russia, but on the second tour Murchison discovered and Verneuil made the fossil analyses of a new formation in Perm, hence called the Permian system". The large geological map is quite detailed and encompasses Scandinavia, Poland, and several other adjacent countries. Inscribed by a former private owner in pencil on the front pastedown. Some rubbing to joints; short tear just into the map at the adhesion point. Text, plate, and map clean. A very good copy. DSB 10, p. 584; DSB 13, p. 620; Ward and Carozzi, 1623 (English and French editions).