186 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 
U. S. Geological Survey — Continued. 
Gold and silver — Continued. 
New Mexico, by Waldemar Lindgren, pp. 275-284. 
Oregon, by Charles G. Yale, pp. 284-293. 
South Dakota, by Waldemar Lindgren, pp. 293-297. 
Southern Appalachian States, including Alabama, Georgia, Maryland, North Carolina, 
South Carolina, and Tennessee, by Waldemar Lindgren, pp. 297-304. 
Texas, by Waldemar Lindgren, pp. 304-305. 
Utah, by V. C. Heikes, pp. 305-331. 
Washington, by Charles G. Yale, pp. 331-337. 
Wyoming, by Waldemar Lindgren, pp. 337-341. 
Iron ores, by John Birkinbine, pp. 53-87. 
Lead, by Charles Kirchhoff, pp. 363-370. 
Manganese ores, by John Birkinbine, pp. 87-111. 
Platinum, by F. W. Horton, pp. 423-434. 
Quicksilver, by F. W. Horton, pp. 393-404. 
Silver. See Gold and silver. 
Steel-hardening metals, by Joseph Hyde Pratt, pp. 405-421. 
Tin, by Frank L. Hess, pp. 445-451. 
Zinc, by Charles Kirchhoff, pp. 371-377. 
Zinc and lead ores, by H. Foster Bain, pp. 379-392. 
(Fuels.) 
Coal, by Edward W. Parker, pp. 453-714. 
Coke, by Edward W. Parker, pp. 715-766. 
Gas, coke, tar, and ammonia at gas works and in retort coke ovens, by Edward W. 
Parker, pp. 767-797. 
Natural gas, by W. T. Griswold, pp. 799-812. 
Petroleum, by W. T. Griswold, pp. 813-920. 
(Structural materials.) 
Cement : 
Advance in cement technology, by Edwin C. Eckel, pp. 921-923. 
Statistics of cement industry, by L. L. Kimball, pp. 924-944. 
Clay-working industries, by Jefferson Middleton, pp. 945-1002. 
Lime and sand-lime brick, by Edwin ('. Eckel, pp. 1003-1006. 
Sand and gravel, by A. T. Coons, pp. 1OO7-1010. 
Slate, pp. 1011-1020. 
Stone industry, by A. T. Coons, pp. 1021-1067. 
(Abrasive materials.) 
Abrasive materials, by Joseph Hyde Pratt, pp. 1069-1085. 
(Chemical materials.) 
Arsenious oxide, by C. C. Schnatterbeck, pp. 1087-1089. 
Borax, by Charles G. Yale, pp. 1091-1096. 
Bromine, by Frederick J. H. Merrill, pp. 1097-1098. 
Fluorspar and cryolite, by Edmund Otis Hovey, pp. 1099-1103. 
Gypsum and gypsum products, by Edwin C. Eckel, pp. 1105-1115. 
Phosphate rock, by Edmund Otis Hovey, pp. 1117-1126. 
Salt, by Edmund Otis Hovey, pp. 1127-113.1. 
Sulphur and pyrite, pp. 1137-1143. 
Barytes, pp. 1145-1146. 
Mineral paints, pp. 1147-1154. 
(Miscellaneous.) 
Asbestos, by George Otis Smith, pp. 1155-1159. 
Asphaltum and bituminous rock, by Edmund Otis Hovey, pp. 1161-1169. 
Bauxite and aluminum, pp. 1171-1174. 
Black sands, by David T. Day and R. H. Richards, pp. 1175-1258. 
Carbon dioxide, by Myron L. Fuller, pp. 1259-1263. 
Graphite, by George Otis Smith, pp. 1265-1269. 
Lithium minerals, by Edmund Otis Hovey, pp. 1271-1272. 
Magnesite, by Charles G. Yale, pp. 1273-1278. 
Mica, by George Otis Smith, pp. 1279-1283. 
Mineral waters, by Myron L. Fuller, pp. 1285-1308. 
