631. Fossil Fuel. History and Description of. The Collieries and Coal Trade of Great Britain. Fine copy, uncut, illus. London, 1841.$1.25
632. Gemmis, Ioannis de Laet Antvverpiani de Gemmis et Lapidibus Libri Don, Ouibus premittitur Theophrasti Liber de Lapidibus Græce and Latine Cum Brevibus Anontationibus. 12mo, fine copy, illus., very scarce. Lugduni Batavorum Ex Officiana Ioannis Maire, 1647.$2.50
633. Jackson, C. T. Foster and Whitney Reports on the Geological and Mineralogical Survey of the Mineral Lands of the U. S. in the State of Michigan. 19 plates, 5 maps, 4 woodcuts. Also contains Annual Report Com. of Indian Affairs and Pensions, 1849. Half roan. Very scarce, being Doc. No. 5, part 3, 31st Congress. Wash., 1849.$2.75
634. Kent, E. N. Instructions for Collecting, Testing, Melting and Assaying Gold. For the use of Persons about to Visit the Gold Region of California. Illus., with 30 wood engravings, 40 pp., pr. covers. A Forty-Niner! Rare. N. York, 1849.$1.50
635. Kennedy, S. Magnetic and Mineral Springs of Michigan. Also, Essay on the Climate of Michigan. 128 pp., 2 maps and illus. Wilmington, 1872.$1.25
636. Lake Superior. Mineral Lands, Maps, Etc., of the Mineral Region. 3 folding maps 32 × 20½ in.; also a 16-page List of Persons to whom Permits to Locate Mineral Lands on the South Shore have been granted and leases issued by the Sec. of War, to June 16, 1846. 12mo, scarce.$3.00
637. Lesley, J. P. Manual of Coal and Its Topography. Illustrated by Original Drawings, chiefly of Facts in the Geology of the Appalachian Region of the U. S. 12mo, very rare. Phila., 1856.$6.00
638. Lesley, J. P. Collection of Occasional Surveys of Iron, Coal and Oil Districts in the U. S., made during the Last Ten Years. For Private Distribution. Numerous maps and illus., 204 pp., Dr. A. V. Lesley’s auto. copy. Phila., 1874.$2.50
639. Lesleyana. A Valuable Volume of 36 Rare Pamphlets on the Origin, History and Work of the second Geol. Survey of the Coal Regions in particular. Many maps, etc. Collected by J. H. Harden. Half roan.$2.75
640. Litton, A. Preliminary Report on Some of the Principal Mines in Franklin, Jefferson, Washington, St. Francois and Madison Cos., Missouri. 94 pp., paper, scarce, sections, views, maps, etc. St. Louis, 1854.$1.25