520B. Lyell, Charles. A Manual of Elementary Geology. 647 pp., 750 cuts. New York, 1855.$1.25
520C. Lyell, Charles. Principles of Geology, Being an Attempt to explain the former changes of the earth’s surface. Colored maps and aquatint plates, illus. in text and engraved plates of shells. Second ed., 3 vols., nicely bound in half calf, gilt backs, red Russia labels. London, 1832-33.$2.50
520D. Lyell, Charles. Same. First Amer. Ed. 2 Vols., woodcuts, col. maps and plates. Name on title, a little shaken. Phila., 1837.$2.00
520E. Lyell, Charles. Same. New York, 1857.75c.
521. Marcou, Jules. Geological Map of the U. S. and the British Provinces of N. America. Folio, 3 ft. × 2 ft., printed in colors, mounted on linen and folded to octavo size in original printed covers. Fine copy, rare. Boston, 1853.$3.00
522. Marsh, O. C. Dinocerata. A Monograph of an Extinct Order of Gigantic Mammals. (U. S. Geol. Sur. V. 10.) Folio, half cloth, and printed heavy paper covers, large paper copy, author’s ed., uncut, with autogr. inscription. Wash., 1884.$3.00
523. Maclure, Wm. Observations on the Geology of the U. S. 91 pp., 4to, boards, uncut, needs rebacking. Large geog. map of U. S.; also plate of 5 sections of U. S., from Atlantic to basin of the Mississippi River. The valuable first and unabridged ed. pub. in Trans. Amer. Philos. Soc. With title; (vol. 1, P. S.), list of officers, etc. Phila., 1818.$2.75
524. Mease, James, M. D. Geological Account of the U. S., Describing their Animal, Vegetable and Mineral Productions, Antiquities and Curiosities. 16mo, new half mor., uncut, 510 pp., illus., corner torn from title-page and pp. 1-4, ink notes on margin. Phila., 1807.$2.75
525. Mercati, M. Appendix ad Metallothecam Vaticanam. Additis Notis. Folio, boards, 54 pp., numerous plates of fossils, also plates of “Apollo,” “Laocoon,” etc. Romæ, 1719.$2.00
526. Miller, S. A. American Paleozoic Fossils, Catalogue of the Genera and Species, with Names of Authors, Dates, Groups of Rocks in which Found, Etymology, etc. Royal 8vo. Cincinnati, 1877.$2.25