42 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, [bui 
Day (David T.) — Continued. 
Coal, by Edward W. Parker, pp. 351-538. 
Coke, by Edward W. Parker, pp. 539-608. 
Gas, coke, tar, and ammonia at gas works, and in retort coke ovens, by Edward W. P 
pp. 609-634. 
Petroleum, by F. H. Oliphant, pp. 6S5-718. 
Natural gas, by F. H. Oliphant, pp. 719-743. 
Asphaltum and bituminous rock, by Edmund Otis Hovey, pp. 745-754. 
Stone, pp. 755-789. 
Clay-working industries, by Jefferson Middleton, pp. 791-832. 
Cement in foreign countries, pp. 900-903. 
Portland cement in Michigan in 1903, by L.L.Kimball, pp. 903-910. 
Precious stones, by George F. Kun'z, pp. 911-977. 
Talc and soapstone, by Joseph Hyde Pratt, pp. 979-987. 
Abrasive materials, by Joseph Hyde Pratt, pp. 989-1015. 
Borax, bj Charles G. Yale, pp. 1017-1028. 
Fluorspar and cryolite, by Joseph Hyde Pratt, pp. 1029-1032. 
Gypsum and gypsum products, pp. 1033-104~>. 
Phosphate rock, by Edmund O. Hovey, pp. 1047-1058. 
Salt, by Edmund O. Hovey, pp. 1059-1071. 
Sulphur and pyrite, by Joseph Hyde Pratt, pp. 1073-1087. 
Barytes, by Joseph Hyde Pratt, pp. 1089-1091. 
Mineral paints, by Joseph Byde Pratt, pp. 1095-1110. 
Asbestos, bj Joseph Hyde Pratt, pp. 1111-1116. 
Flint and Feldspar, by Beinrich Ries, pp. 1117-1119. 
Graphite, by Joseph Hyde Pratt, pp. 1121-1129. 
Magnesite, by Charles G. Yale, pp, L131-1135. 
Mineral waters, pp. 1137-1162. 
Monazite and zircon, by Joseph Hyde Pratt, pp. 1163-1170. 
Glass sand, by A. T. Coons, pp. 1171-1178. 
3. Gypsum deposits in Florida. 
l\ S. Geol. Surv., Bull. no. 223, p. 48, 1904. 
Occurrence and character of a gypsum deposit near Panasoffkee, Florida 
Deckert (Emil). 
1. Martinique and sein Vulkanismus. 
Petermanns Mittheilungen, Band 48, pp. 133-136, 1 pi. (map), 1902. 
(Jives a description of Martinique and the volcanic eruption of Mont Pele. 
Demaret (Loon). 
1. Los principaux gisements do minerals de zinc des Etats-E 
d'Amerique. 
Revue universelle des Mines [Liege and Paris], 4 e ser., t. 6, pp. 221-256, 6] J 
1904. 
Describes the principal deposits of zinc ore in the United States, incliAi 
observations «>n the character, occurrence, geologic relations, origin, etc. 
2. Les principaux gisements des minerais de mercure du rnonde. 
Annales des Mines de Belgique, t. 9, 80 pp., 3 pis., 28 figs., 1904. 
Gives an account of the deposits of quicksilver ores in the world, their oc< 
rence, geologic relations, production, etc. In the United States deposit 
California, Oregon, and Texas are considered. 
Dern (George H.). 
1. The geology of Mercur [Utah]. A history of the region. Descr 
tion of the ores and their peculiar formations. How they w< 
deposited. 
Mines & Minerals, vol. 24, pp. 543-545, 3 figs., 1904. 
Describes the general geology, the occurrence and character of the gold 1 1 
silver ledges, and discusses the origin of the ores. 
