INDEX 



555 



Geochemistry. Chalcocite deposition. 



A. C. Spencer. 70. 

 *Sulfides of zinc, cadmium, and mer- 

 cury. E. T. Allen and J. L. 



Crenshaw. 114. 

 Geodesy. *Precise level net of the U. 



S. W. Bowie. 298. 

 *California-Washington arc. A. L. 



Baldwin. 402. 

 *Triangulation along the west coast 



of Florida. Clarence H. Swick. 



500. 

 Geography. *Biological paleogeogra- 



phy. A. H. Clark. 167. 

 *Islands of Antillia. W. H. Babcock 



31. 

 Geology. *Apishapa, Colo.^ Folio. G. 



W. Stose. 117. 

 *Are quantitative physico-chemical 



studies of rocks practicable? Ar- 

 thur L. Day. 502. 

 *Arctic Slope of Alaska. E. de K. 



Leffingwell. 343. 

 *The volcanoes and rocks of Pantel- 



leria. Henry S. Washington. 502. 

 *Bismarck, N. Dak., folio. A. G. 



Leonard. 466. 

 *Coal fields of Grand Mesa. W. T. 



Lee. 362. 

 *Cone in cone structure in coal from 



Idaho. E. G. Woodruff. 237. 

 *Eagle River region, Alaska. A. 



Knope. 258. • 

 *Enrichment of sulfide ores. W. H. 



Emmons. 454. 

 *Geology of the Bahama Islands. T. 



W. Vaughan. 302. 

 *Geology of the Koyukuk-Chandalar 



region, Alaska. A. G. Maddren. 



528. 

 *Igneous rocks of the Raton Mesa 



Region. J. B. Mertie, Jr. 302. 

 *Index to the stratigraphy of North 



America. B. Willis. 118. 

 *Kenova, Ky., West Virginia, and 



Ohio, folio. W. C. Phalen. 455. 



*Mud lumps at the mouth of the Mis- 

 sissippi. E. W. Shaw. 343. 



*Niter near Melrose, Mont. R. W. 

 Richards. 301. 



*Onondaga fauna. E. M. Kindle. 

 403. 



*Ore deposits of the Butte District, 

 Mont. W. H. Weed. 363. 



*Ore deposits of the Helena mining 

 region, Montana. A. Knopf. 529. 



*Ore deposits of the Park City dis- 

 trict, Utah. J. M. BouTWELL. 

 445. 



*Ores of the copper district of Tas- 

 mania. Gilbert and Pogue. 344. 



*Origin of the Homestake ore body. 

 S. Paige. 173. 



*Petroleum near Cody, Wyo. D. F. 

 Hewett. 51. 



*Quaternary problems of central 

 Alaska. H. M. Eakin. 301. 



*Rampart Quadrangle, Alaska. H. M. 

 Eakin. 467. 



*Reconnaissance of the lower Eraser 

 River, B. C. N. L. Bowen. 539. 



*Relations of ilmenite to magnetite. 



J. T SiNGEWALD, Jr. 199. 



*Salt and gypsum deposits of western 

 Virginia. G. W. Stose. 117. 



*Secondary enrichment in silver. E. 

 S. Bastin. 52. 



*Some special features of the glacia- 

 tion of the Catskill Mountains. 

 H. E. Merwin. 539. 



*Southern Wasatch mountains. 50. 



*Structure map of the northern an- 

 thracite field. N. H. Darton. 

 199. 



*The general principles underlying 

 metamorphic processes. J. John- 

 ston and P. NiGGLi. 527. 



*The volcanic cycles in Sardinia. 

 H. S. Washington. 526. 



*Time relations of glacial lakes in the 

 Great Lakes region. F. Leverett. 

 237. 



* Abstracts. 



