. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. THE NONMETALLIC MINERALS. 229 J. VoLNEY Lewis. Valuable Discovery of Corundum. Canadian Mining Review, XV, 1896, p. 230. The Corundum Lands of Ontario. Canadian Mining Review, XVII, 1898, p. 192. Corundum in Ontario. Engineering and Mining Journal, LXVI, 1898, p. 303. A. M. Stone. Corundum Mining in North Candina. Engineering and Mining Journal, LXV, 1898, p. Fig. 5. PISOLITIC BAUXITE. Bartow County, Georgia. Specimen No. 63335,
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. THE NONMETALLIC MINERALS. 229 J. VoLNEY Lewis. Valuable Discovery of Corundum. Canadian Mining Review, XV, 1896, p. 230. The Corundum Lands of Ontario. Canadian Mining Review, XVII, 1898, p. 192. Corundum in Ontario. Engineering and Mining Journal, LXVI, 1898, p. 303. A. M. Stone. Corundum Mining in North Candina. Engineering and Mining Journal, LXV, 1898, p. Fig. 5. PISOLITIC BAUXITE. Bartow County, Georgia. Specimen No. 63335, 3. Bauxite. ,,0,= alumina, per cent; water, per cent. Commonly impure through the presence of iron oxides, silica, lime, and magnesia. Color, white or gray when pure, but yel- lowish, brown, or red through impurities. Specific gravity, ; structure, massive, or earthy and clay like. According to Hayes ^ the ^ The Geological Relations of the Southern Appalachian Bauxite Deposits. Trans- actions of the American Institute of Mining Engineers, XXIV, 1894, pp. 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 Smithsonian Institution. Board of Regents; United States National Museum. Report of the U. S. National Museum; Smithsonian Institution. Report of the Secretary. Washington : Smithsonian Institution
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