Heer, Oswald; Die Urwelt der Schweiz. 1st edition, Zurich, 1865. Quarto, pp xxix, 622, tinted frontispiece, illustrated with 18 tinted plates, diagrams.

The set is complete and in contemporary cloth over marbled boards, spine titles. Hans Thalman's copy with his stamp. Light foxing to some signatures, very good.
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A Swiss paleontologist and botanist with the University of Zurich; Heer ( 1809-1883) is best noted for his studies in paleobotany and "Die Urwelt der Schweiz". Heer's work is one of the first to accurately depict primordial landscapes for geological periods. The work focuses on the various geological periods of Switzerland and includes several stunning renderings of geological landscapes and life.