. Bulletin of the Geological Society of America. Geology. BULL. GEOL. SOC. AM. \/0L. 18, 1906, PL. 38. FiGUKE 1. IN THE 'ES OF SEYISTAN The scale may be judged from the hat. These dunes move with extraordinary rapid- ity, objects 10 or 12 feet high being buried and exposed again in a single year. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Geological Society of America. [New York : The Society]

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1890