INDEX. 



397 



Cuprite, 225. 

 Cupro-descloizite, 225. 

 Cyanotrichite, 225. 

 Cyathophyllum, 311. 

 Cyprina, 383. 

 Cyrtolite, 259, 383. 



D. 



Dallas, xlvii, 108, 109, 111, 112, 113. 



Austin chalk, 112. 



County, 60, 111. 

 Dalmanites segeria, 311. 

 Damon's Mound, xxxii. 

 Dams, 174, 1*75, 227. 

 Dana, J. D., 255, 257, 269, 293. 

 Davis Mountains, 225, 232, 234. 

 Decatur, 117. 

 Decorative stone, 373. 

 Deep Creek, 205, 301, 303, 359. 

 division, 303. 



Eddy, 124. 

 Deer Creek, 291, 302. 

 Delaware Creek, 234. 

 De Leon, 117. 

 Denison, 110, 130. 



beds, 130, 1. 

 Denton, 109. 



County, 110. 

 De Ryee, Dr. Wm, 186. 

 Descriptive geology, 7, 145. 

 Development, Trans-Pecos region, 228. 

 Devil's Eye, 30. 



Ridge, li. 



River, 232, 298. 

 Devonian system, lxiii, 310. 

 Diabolo Mountains, xlviii, lxviii, 221, 222, 



223, 224, 225. 

 Dicellocephalus, 289. 

 Dickens County, 189. 

 Dictyonema fenestratum, 311. 

 Dikes, 222. 



Dimension granite, 368. 

 Dioryte, 383. 

 Dip, Blanco Canyon beds, 190. 



Carboniferous, 147, 154, 202, 203. 



cause of variable, 16. 



Cretaceous, 106, 154. 



Mesozoic, 106, 154. 



northeast, Rio Grande section, 16, 45. 



Palaeozoic, 147, 154. 



Permian, 185, 186. 



Tertiary, 16, 45. 



Trans-Pecos rocks, 221. 



variable, 16. 

 Disadvantages, Trans-Pecos Texas, 231. 

 Discina convexa, 152. 



seneca, 311. 

 Distribution of hematites, 357. 

 Disturbances of the strata, 113, 134, 

 Divide, Neches- Angelina, 71. 



Neches-Trinity, 72. 

 Dockum, 189. 



beds, 189. 



ranch, xxvi. 

 Dolan, Capt, lxxxi. 

 Doleryte, 225. 



Dolomite, 225, 383. 



common, 371. 

 Donaldson's Creek, 148. 

 Don Quixote and Sancho Panza prospect, 



224. 

 Doran's, 150. 

 D'Orbigny, 122. 

 Double Mountains, xxv, lxxi, 185. 



beds, lxx, 188. 

 Dove Creek, 169, 177. 

 Doyle's Gap, 68, 87. 

 Drainage, East Texas, 11, 12, 13. 

 Drake, N. F., xxv, xxvii, lxxiv, lxxxiii, lxxxv, 



lxxxvii. 

 Dry Creek, 152. 



Dumble. E. T., xvii, lxxiv, 6, 58, 239, 254, 

 269,312, 316, 327. 



Letter of Transmittal, xiii. 



Mountains, 325, 327, 328. 



Report of, xvii. 

 Dunson and Kingsbury's pasture, 151, 152, 



209, 213. 

 Durability of limestones, 163. 



E. 



Eagle Flat Station, xlviii, li, lviii, lxiii, 222. 



Eagle Ford clay shales, xlvii, 111. 



Eagle Mountains, li, lxvi, lxviii, 221, 225, 



232, 234. 

 Eagle Pass, xxvi, xlviii, xlix, 40. 



coal, xlix. 

 East Texas boundaries, 7. 



drainage, 11, 12. 



navigation of rivers, 13. 



water supply, 11. 

 Echinoderms, 246. 

 Economic geology, 65, 158, 191, 212, 329. 



features of Cretaceous system, 137. 

 Eddy, C. W., lxxxvi. 

 Eden, 155. 

 Edestus vorax, 149. 

 Edinburgh, xxvi. 

 Edward, D. B., 240. 



Elevation of Angelina-Neches divide, 71. 

 Elkhart section, 34. 

 Springs. 100. 

 Wells, 34, 100. 

 Ellis County, 111. 

 Elliott Creek, 204. 

 Elmo. 20. 

 El Paso, lxii, 112, 224, 229, 232, 234. 



County, 226. 

 Emory, Maj., 242. 

 Enchanted Rock, 241, 314, 318, 321, 348, 



352, 364, 368, 369. 

 Encrinites, 148, 155. 

 Enstatite, 383. 

 Eocystites, 300. 

 Eparchsean group, lvii, 276. 277, 280, 281, 



282. 

 Epidosyte, 383. 

 Epidote, 225, 259,^335, 383. 

 Epsomite, 119, 122. 

 Epsom salts, lii, 119, 123. 

 Erath County, lxvi. 

 Etholen, 232. 



