. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. F. Houghton, Photo. Fig. 26. Hanover shale, Lake Erie, north of the mouth of Silver Creek. The lowest black band is seen projecting from the cliff near its 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 Buffalo Society of Natural Sciences. Buffalo, N. Y. : Buffalo Society of Natural Sciences

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Keywords: ., bookcentury1800, bookdecade1870, books, booksubjectnaturalhistory