. Elements of geology. Geology. Cyclas obovata; fossW. Hants. Fig. 25. Cyrena trigonula; fossil. Grays, Essex. Fig. 26. Fig. 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 Lyell, Charles, Sir, 1797-1875; Gibbes, Lewis Reeve, 1810-1894, former owner. DSI; Merrill, George P. (George Perkins), 1854-1929, former owner. DSI. Philadelphia : James Kay, Jun. and Brother ; Pittsburgh : C. H. Kay & Co.

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Keywords: ., bookauthorlyellcharlessir17, bookcentury1800, booksubjectgeology