252 



CATALOGUE AND INDEX OP 



[BULL. 127. 



Colorado — Coiitiuuod. 



1884. Ore deposits of Summit district, 



Hills. 

 Geology of Rocky Mountain dis- 

 trict, Emmons, S. F. 



1885. Allanite as a roct constituent, 



Iddings and Cross. 



Cone-in-oone, Newberry. 



Separation of strata in folding-, 

 Bulkley, F. C. 



La Plata Mountains, Freeman 



Sketch of Eocky Mountain divi- 

 sion, Emmons, S. F. 



Notes on metamorphism, Steven- 

 son. 



Origin of crystalline rocks. Hunt, 

 T. S. 



Geology of the Spanish Peak, 

 Savage. 



Contributions to mineralogy of 

 the Eocky Mountains, Cross 

 and Hillebrand. 



Jurassic of North America, 

 White, C. A. 



Report of Eocky Mountain divi- 

 sion, Emmons, S. F. 



Laramie flora. Ward, L. F. 



1886. Remarkable landslide, Cross. 

 Leadville ore deposits, Eolker. 

 Fresh-water invertebrates of the 



Jurassic, White, C. A. 

 Iron-ore deposits of Colorado, 



Eolker. 

 Trap rocks in eastern Kentucky, 



Crandall. 

 Sulphides of Leadville,Freeland. 

 Supermetamorphism and voloan- 



ism, Corastock. 

 Drift in Eocky Mountains, Com- 



stock. 

 Veins of southwestern Colorado, 



Comstock. 

 Ptilolite, Cross and Eakius. 

 Iron ores, Putnam. 

 Aspen district, Lakes. 

 Chemistry, Leadville report, 



Hillebrand. 

 Petrography, Leadville report, 



Cross. 

 Geology and mining of Leadville, 



Emmons, S. F. 

 Eagle County, Tilden. 

 Umgebung von Silver Cliff, Sa- 



lida, Leadville und Gunnison, 



Eath. 



Colorado — C ontinn ed . 



1886. Coal in Carboniferous, Hills. 

 Extinct geyser basin, Comstock. 

 Topaz and garnet in rhyolite, 



Cross. 

 San Juan Mountains, Stevens. 

 Trip to Telluride, San Miguel 



County, Van Diest. 



1887. Veins and geology of southwest- 



ern Colorado, Comstock. 

 Battle Mountain, Eagle County, 



Olcott. 

 Cimarron landslide. Cross. 

 Ore chutes of Iron Hill, Lead- 

 ville, Blow. 

 Flnssgebiet des Colorado, Toula. 

 Living glacier on Hagues Peak, 



Stone. 

 Gas in Pitkin County, Hills. 

 Geology of ore deposits. Lakes. 

 Hints toward a theory of voloan- 



ism, Comstock, T. B. 

 Supermetamorphism, Comstock. 

 Elk Head coal, Chisholm. 

 Notes on Leadville, Ihlseng. 

 Colorado ore deposits, Emmons, 



S.F. 

 Map of United States, Hitchcock, 



C.H. 

 Topaz and garnet in lithophyses. 



Cross. 

 Boulder County veins. Van 



Diest. 

 Water in Cretaceous, Gunnison 



County, Hill. 

 Sandstone from Armejo, analysis, 



Chatard. 



1888. Paramorphic origin of certain 



minerals, Cross. 



Phonolite, El Paso County, 

 Cross. 



Origin of primary quartz in ba- 

 salt, Iddings. 



Relations of Laramie group. 

 White, C. A. 



Mining in San Juan region, 

 Ihlseng. 



Structural relations of oro de- 

 posits, Emmons, S. F. 



Sylvanite mine, Eng. and Mining 

 Jour. 



Geology of Leadville, by Em- 

 mons, Eaymond. 



Upper Eocene lacustrine forma- 

 tions, Scott. 



