52 INDEX TO NORTH AMERICAN GEOLOGY, PALEONTOLOGY, [bull. 
Colorado— Continued. 
Cebolla River deposits, Lakes, 3311. 
Chemical composition of calaverite, Hille- 
brand, 2576. 
Classification of the Huerfano Eocene, Hills, 
2589. 
Clays of Colorado, Ries, 4627. 
Clay-working industry, Ries, 4619, 4621. 
Coal fields of Colorado, Hills, R. C, 2594. 
Coal fields of Colorado, Lakes, 3351. 
Coal mines of Pictou, Meade, 3892. 
Colorado's new gold camps, Lakes, 3305. 
Concretions of chalcedony and opal, Patton, 
4257. 
Creede, ore deposts of, Kirby, 3186. 
Creede, ore deposits of, MacMechen, 3629. 
Cripple Creek and its ore deposits, Lakes, 3354. 
Cripple Creek, Lakes, 3308. 
Cripple Creek, Skewes, 4990. 
Cripple Creek phonolite, Skewes, 4991. 
Cripple Creek region, Lakes, 3313. 
Cripple Creek mining district, Hazelhurst, 
2439. 
Crystallization of enargite, Pirsson, 4385. 
[Denver artesian basin] , Hills, 2588. 
Denver formation, Davis, 1363. 
Description of igneous formations, Cross, 1188. 
Description of the Elk Mountains, Emmons, 
1698. 
Description of the sedimentary formations, 
Eldridge, 1623. 
Devonian in southwestern Colorado, Spencer 
and Girty, 5117. 
Devonian fossils from southwestern Colorado, 
Girty, 2039. 
Devonian strata in Colorado, Spencer, 5118. 
Dike on Columbia vein, Palmer and Stod- 
dard, 4246. 
"Down-town" mines of Leadville, Lakes, 
3368. 
Elmoro folio, Hills, 2598. 
El Paso coal field, Lakes, 3336. 
Enterprise mine, Rickard, 4602. 
Excursion to the Canyon of the Colorado, 
Emmons, 1695. 
Farncomb Hill gold deposits, Lakes, 3370. 
Fissure systems of the Silverton quadrangle, 
Ransome, 4545. 
Florence oil field, Eldridge, 1620. 
Fluorine mine, Lakes, 3337. 
Formation of ore deposits by lateral secretion, 
Van Diest, 1492. 
Fossil flora of Florissant, Kirchner, 3187. 
Fossil fishes of Canyon City, Clarke, 949a. 
Fossil plants of the Denver Basin, Knowlton, 
3239. 
Fourmile placer mining district, Hoover, 2730. 
Further notes on Cripple Creek, Pearce, 4272. 
[Genesis of ore deposits] , Emmons, 1700. 
Genesis of ore deposits, Posepny, 4421. 
[Genesis of ore deposits] , Rickard, 4595. 
Geological distribution of useful metals in 
United States, Emmons, 1699. 
Geology of Aspen, Lakes, 3330. 
Geology of Aspen mining district, Emmons, 
1714. 
Geology of Aspen mining district, Spurr, 5175. 
Colorado — Continued. 
Geology of Cripple Creek, Argall, 120. 
Geology of Cripple Creek, Cross, 1190, 1192. 
Geology of Cripple Creek, Hills, 2597. 
Geology of Cripple Creek, Hoover, 2729. 
Geology of Cripple Creek, McCarn, 3831. 
Geology of Cripple Creek, Colo., Moore, 4026. 
Geology of Cripple Creek, Colo., Rickard, 4599. 
Geology of Denver, Cannon, 748. 
Geology of Palmer Lake, Cannon, 747. 
Geology of Sangre de Cristo range, Van 
Diest, 5676. 
Geology of Silver Cliff and Rosita Hills, Cross, 
1191. 
Geology of Steamboat Springs, Witter, 6402. 
Geology of the Denver Basin, Emmons, Cross, 
and Eldridge, 1707. 
Geology of the Mount Wilson mining district, 
Nason, 4071. 
Geology of the Rico Mountains, Cross and 
Spencer, 1206. 
Glacier of Mount Arapahoe, Lee, 3446. 
Goat-antelope from Pikes Peak region, 1133. 
Grand River coal field, Lakes, 3353. 
Granite breccias of Cripple Creek, Stone, 5254. 
Granite breccias of Grizzly Peak, Stone, 5256. 
Granites of Pikes Peak, Colorado, Matthews, 
3733. 
Granitic rocks of the Pikes Peak quadrangle, 
Mathews, 3742. 
Great Plains of Colorado and Kansas, Em- 
mons, 1694. 
Gunnison gold belt, Colorado, Lakes, 3307. 
Gunnison gold belt, Lakes, 3317. 
Hahns Peak, Draper, 1540. 
Huerfano Lake basin, Osborn, 4193a. 
Igneous rocks of the Telluride district, Colo- 
rado, Cross, 1193. 
[Independence Mine, Cripple Creek] ,Schwarz, 
4860. 
Insects from Florissant, Scudder, 4889. 
Intrusive sandstone dikes in granite, Cross, 
1189. 
Itinerary, Colorado Springs to Denver, Cross, 
1183. 
Itinerary, Nathrop to Salida, Colo., Cross, 1182. 
Krennerite from Cripple Creek, Chester, 881. 
Laccolites in Colorado, Gilbert, 2001. 
Laccolitic mountain groups of Colorado, 
Utah, and Arizona, Cross, 1186. 
Lake basins created by wind erosion, Gilbert, 
1994. 
La Plata Mountains, Lakes, 3323. 
Larimer County gypsum, Lee, 3439. 
Las Animas glacier, Stone, 5250. 
Leadville gold belt, Blow, 498. 
Liberty Bell gold mine, Telluride, Winslow, 
6400. 
Llama remains, observations on, Cragin, 1114. 
Manganese, Weeks, 5966. 
Mesa Verde, Newell, 4086. 
Mineralogical notes, Penfield, 4301. 
Mineral veins of Gunnison County, Warren, 
5868. 
Mines around Breckenridge, Lakes, 3349. 
Mines of Custer County, Colo., Emmons,1705. 
Mines of La Plata Mountains, Petre, 4362, 
