INDEX. 
[The numbers refer to entries in the bibliography.] 
Abrasive materials. 
Cnited States 
2419. 
Arnold, 65 ; 2418, 
Addresses. 
Concentration as a geological prin- 
ciple : Russell, 2105. 
Contributions of America to geology : 
Rice, 2033. 
Early surroundings of life: Lane, 1515. 
Evolution as it appears to the paleon- 
tologist : Osborn, 1846. 
Methods of the earth sciences : Cham- 
berlin, 452. 
Present problems of geophysics : Becker, 
171. 
Problems of geology: Van Hise, 2421. 
Relation of the Federal Government to 
the mining industry : Hayes, 
1108. 
Stratigraphic geology : Prosser, 1960. 
U. S. Geological Survey and the min- 
ing industry : Smith, 2238. 
U. S. Geological Survey, work of : 
Smith, 2239. 
Alabama. 
General. 
Jackson anticlinal in Clarke county : 
Smith, 2225. 
Economic. 
Bauxite industry : Judd, 1330. 
Birmingham district, clay : Butts, 372. 
coal : Butts, 369. 
iron : Burehard, 351. 
limestone and dolomite : Butts, 370. 
sand-lime brickmaking: Butts, 371. 
Cahaba coal field: Butts, .".7::. 
Clinton ores : Burehard, 351 ; Eckel, 
764. 
Glass sands : Burehard, .''.55. 
Iron ores, Clinton : Burehard, 351 ; 
Eckel, 764. 
Russellville district : Burehard, 352. 
Talladega County: Smith, 2247. 
Limestone and dolomite, Birmingham 
district : Butts, 370. 
Mineral resources: Smith, 2227. 
Sand-lime brickmaking : Butts, 371. 
Warrior coal basin : Butts, 369. 
Stratigraphic. 
Post-Eocene formations : Smith, 2226, 
22''.X. 
St. Stephens limestone overlap: Smith, 
2224 
Alabama— Continued. 
Paleontology. 
Alabamornis gigantea : Abel, 4. 
Eocene fossils : Aldrich, 25. 
Pleistocene plants : Berry, 223. 
Mineralog.u. 
Evansite : Schaller, 2136. 
Selma meteorite : Hovey, 1232 ; Mer- 
rill, 1739. 
Underground water. 
Smith, 2229. 
Alaska. 
General. 
Climatic conditions at Nome during 
the Pliocene : Dall, 628. 
Geologic survey, progress of : Brooks, 
310. 
Geology and geography : Brooks, 313 ; 
Riihl, 2099. 
Physiography and geology : Duffleld, 
749. 
Publications, recent, relating to : 
Brooks, 312. 
Reconnaissance. Circle to Fort Ham- 
lin : Stone, 2309. 
Pacific coast : Blackwelder, 240. 
Economic. 
Admiralty Island : Wright, 2640. 
Bering River, coal : Martin, 1680. 
Bonnifield and Kantishna regions : 
Prindle, 1957. 
Cape Lisburne, coal : Collier, 552. 
Cape Nome region : Moftit. 1764. 
beach gravels: Halla, 1066; Hutch- 
ins, 1263. 
placers : Wilson, 2606. 
Cape Prince of Wales, tin : Fay, 856. 
Circle precinct : Brooks, 319 ; Prindle, 
1956. 
Controller Bay, petroleum : Martin, 
1684. 
Coal fields: Martin, 1683; Ritter, 2069. 
Copper mining in 1905: Weed, 2499. 
Herendeen coal field: Paige, 1859. 
Iron Creek : Smith, 2246. 
Juneau gold belt : Spencer, 2261. 
Kachemak Bay coal field : Stone, 2308. 
Klondike region: Everette, 831. 
Kougarok region : Brooks, 318. 
Lode mining : Wright, 2641 ; Wright 
and Wright, 2654. 
Marble : Rathbun, 1986. 
Matanuska and Taikeetna basins: 
Paige and Knopf. 1861, is<'»2. 
66836— Bull. :J72— 09- 
14 
209 
