230 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 
Economic (general)— Continued. 
Garnet zones, formation of: Kemp, 
1363. 
Gold and pyrite : Lindgren, 1.504 ; 
Smyth, 2254. 
Gold associated with pyrite and tel- 
lurides: Sharwood, 2182. 
Iron ores, investigations of : Eckel 
703, 768. 
Law of the apex : De Kalb, 701 : Tu- 
rington, 1075 ; Robertson, 2076. 
Magnetic observations : Smyth, 2255. 
Metal mining industry in western 
States: Lindgren. 1601. 
Metalliferous ores, investigations of : 
Emmons. 707, 800. 
Metalliferous veins : Kemp, 1360. 
Microscopic examination of ore 
bodies : Campbell, 407. 
Mine examiner and prospector's com- 
panion : Miller, 1753. 
Mineral resources of the United 
States: 2418, 2419. 
Mining geology, text-book : Miller, 
1752; Park, 1867. 
Nonmetalliferous minerals, investiga- 
tions of : Eckel, 763. 
Ore deposits and industrial supremacy : 
Stewart, 2207. 
Ore deposits and the law of the apex : 
Shamel, 2178. 
Ore shoots : Weed, 2500. 
Ores in the Archean of North America : 
Heneage, 1130. 
Phase rule : Day and Shepherd, 603. 
Placer investigations : Hutchins, 1261, 
1262. 
Rare metals and minerals : Schaaf- 
Regelmann, 2132 ; Walsh, 2475. 
Secondary enrichment : Neill, 1788. 
Sedi-genetic and igneo-genetic ores : 
Bain, 104. 
United States Geological Survey, re- 
lations to mining industry : 
Smith, 2238. 
University training of engineers in 
economic geology : Branner, 
282; Glenn, 970; Leith, 1555; 
Merrill, 1737. 
Weathered pyrite : Eakle, 754. 
Educational. See also Text-books. 
Applied geology, in the technical 
school : Johnson, 1300. 
Training of engineers in economic 
geology : Branner, 282 ; Glenn, 
970 ; Leith, 1555 ; Merrill, 
1737; Reid, 2010. 
Elevation and subsidence. See Changes of 
level. 
Emery. 
United States : 2418, 2419. 
Virginia : Watson, 2493. 
Erosion. See also Sedimentation. 
Abrasion by glaciers, rivers, and 
waves : Westgate, 2528. 
Bermuda Islands : Verrill, 2445. 
Erosion — Continued. 
Coast changes, New Jersey : Haupt, 
1060. 
Colorado Canyon : Davis, 667. 
Detrital slopes on mountains of the 
Southwest : Blake, 242. 
Ducktown, Tenn. : Glenn, 968. 
Experiments : Jaggar, 1283. 
Glacial erosion in Alaska : Tarr, 2351. 
Glacial period in nonglaciated regions : 
Huntington, 1257. 
Gorges of Finger Lake region, New 
York : Tarr, 2348. 
Gouges, crescentic, formed by glacial 
action : Gilbert, 951. 
Grand Canyon of Colorado : Crook, 
600. 
Karst region of Jamaica : Danes, 639. 
Lateral erosion on some Michigan 
rivers : Jefferson, 1287. 
Meandering, factors controlling : 
Griggs, 1043. 
Moulin work under glaciers : Gilbert, 
952. 
Niagara Falls, recession : Adams, 5 ; 
Gilbert, 955 ; Hall, 1065 ; Spen- 
cer, 2263, 2265, 2266. 
Rocks, characteristics affecting erosion : 
Todd, 2380. 
Scaurs on the River Rouge : Jefferson, 
1286. 
Sculpture of mountains by glaciers : 
Davis, 668. 
Shore topography near Davenport, 
Cal. : Wilson, 2613. 
Solifluction : Anderson, 49. 
Stream movement of load : Brown, 332. 
Valleys, incised meandering : Davis, 
669. 
Eskers. 
Indiana. Tippecanoe County : McBeth, 
1637. 
Ohio, Columbus : Morse, 1772. 
Essays. See Addresses. 
Excursions. 
Intercollegiate geological excursion : 
Johnson, 1301. 
International Geological Congress, ex- 
cursions in Mexico : Hovey, 
1231. 
Morrill geological excursion : Barbour, 
134, 139. 
New Mexico, Arizona, and Utah : John- 
son, 1302. 
Faulting:. 
Block faulting and ore genesis : Jen- 
ney, 1295. 
California: Crandall, 591. 
Klamath region: Hershey, 1133. 
Owari and Formosa compared : 
Omori, 1823. 
Santa Cruz fault line : Ashley, 73 ; 
Branner, 284, 285 ; Carey, 424 ; 
Derleth, 714 ; Gilbert, 950. 
Sierra Nevada : Reid, 2015. 
Classification of faults and fractures: 
Fohs, 886. 
