Ill 
weeks] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1904. 41 
Day (David T.) — Continued. 
Gold and silver, by George E. Roberts, pp. 123-131. 
Manganese ores, by John Birkinbine, pp. 133-161. 
Copper, by Charles Kirchhoff, pp. 163-203. 
Lead, by Charles Kirchhoff, pp. 205-216. 
Zinc, by Charles Kirchhoff, pp. 217-229. 
Aluminum and bauxite, by Joseph Struthera, pp. 231-238. 
Platinum, by Joseph Struthers, pp. 239-243. 
Platinum in the Rambler mine, Wyoming, by J. F. Kemp, pp. 244-250. 
Quicksilver, by Joseph Struthers, pp. 231-238. 
Lithium, by Joseph Hyde Pratt, pp. 259-261. 
Nickel and cobalt, by Joseph Hyde Pratt, pp. 263-270. 
Antimony, by Joseph Struthers, pp. 271-277. 
Arsenic, by Joseph Struthers, pp. 279-282. 
Bismuth, by Joseph Struthers, pp. 283-284. 
Tungsten, molybdenum, uranium, and vanadium, by Joseph Hyde Pratt, pp. 285-288. 
Coal, by Edward W. Parker, pp. 289-447. 
Coke, by Edward W. Parker, pp. 449-515. 
Gas, coke, tar, and ammonia at gas works, and in retort coke ovens, by Edward W. Parker, 
pp. 517-533. 
Petroleum, by F. H. Oliphant, pp. 535-630. 
Natural gas, by F. H. Oliphant, pp. 631-655. 
Asphaltum and bituminous rock, by Joseph Struthers, pp. 657-664. 
Stone, pp. 665-701. 
Clay-working industries, by Jefferson Middleton, pp. 703-776. 
Cement in foreign countries, pp. 777-787. 
Review of cement industry in United States, by L. L. Kimball, pp. 789-812. 
Precious stones, by George F. Kunz, pp. 813-865. 
Talc and soapstone, by Joseph Hyde Pratt, pp. 867-872. 
Abrasive materials, by Joseph Hyde Pratt, pp. 873-890. 
Borax, by Joseph Struthers, pp. 891-896. 
Bromine, by Joseph Struthers, pp. 897-898. 
Fluorspar and cryolite, by Joseph Hyde Pratt, pp. 899-902. 
Gypsum, by George I. Adams, pp. 903-913. 
Phosphate rock, by Joseph Struthers, pp. 915-920. 
Salt, by Joseph Struthers, pp. 921-932. 
Sulphur and pyrite, by Joseph Struthers, pp. 933-943. 
Barytes, by Joseph Hyde Pratt, pp. 945-948. 
Mineral paints, by Joseph Struthers, pp. 949-962. 
Asbestos, by Joseph Hyde Pratt, pp. 963-966. 
Chromite, or chromic iron ore, by Joseph Hyde Pratt, pp. 967-969. 
Flint and feldspar, by Heinrich Ries, pp. 971-973. 
Graphite, by Joseph Struthers, pp. 975-982. 
Magnesite, by Joseph Struthers, pp. 983-984. 
Mica, by J. A. Holmes, pp. 985-991. 
Mineral waters, pp. 993-1002. 
Monazite, by Joseph Hyde Pratt, pp. 1003-1006. 
Glass sand, by A. T. Coons, pp. 1007-1016. 
Mineral resources of the United States. Calendar }^ear 1903. 
U. S. Geol. Surv., Min. Res. of U. S. for 1903, 1204 pp., 1904. 
Contains: 
Iron ores, by John Birkinbine, pp. 41-73. 
Statistics of the American iron trade for 1903, by James M. Swank, pp. 75-127 
Manganese ores, by John Birkinbine, pp. 129-156. 
Gold and silver, pp. 157-199. 
Copper, by Charles Kirchhoff, pp. 201-239. 
Lead, by Charles Kirchhoff, pp. 241-252. 
Zinc, by Charles Kirchhoff, pp. 253-264. 
Aluminum and bauxite, by Joseph Struthers, pp. 265-279. 
Quicksilver, pp. 281-284. 
Steel-hardening metals, by Joseph Hyde Pratt, pp. 285-310. 
Platinum, pp. 311-312. 
Lithium, by Joseph Hyde Pratt, pp. 313-315. 
Antimony, by Joseph Struthers, pp. 317-326. 
Arsenic, by Joseph Struthers, pp. 327-334. 
Tin, by Joseph Struthers and Joseph Hyde Pratt, pp. 335-349. 
