INDEX. 



405 



Prairies, Grand, 116. 



Precious metals, Central Mineral Region, 330. 



Pre-Cretaceous movement, 312. 



Precious stones, 361. 



Preliminary Report on coal fields, 201. 



Presidio, 233. 



Countv, xxv. 



del Norte, 234. 

 Prestwich, Joseph, 23. 

 Prochlorite, 271. 

 Products, mineral, 140. 

 Productus cora, 147. 



costatus, 147. 



nebrascensis, 148, 151, 152. 



punctatus, 148. 



sernirecticulatus, 148, 155, 187. 

 Progress section of Cretaceous, 132. 

 Proofs of origin, nodular ores, 79. 

 Prospect, Don Quixote and Sancho Panza, 



224. 

 Psilomelane, 225, 259, 346, 389. 

 Psilophyton, 311. 

 Public Pen Creek, 350. 

 Putnam Mountains, 287. 

 Pyrolusite, 225, 259, 345. 

 Pyrite, 24, 25, 26, 27, 31, 32, 43, 44, 48, 49, 

 50, 54, 55, 57, 66, 73, 74, 75, 88, 99, 

 100, 115, 120, 129, 259, 260, 331, 389. 

 Pyro-Aurite, 389. 

 Pyrolusite, 389. 

 Pyroxene, 259, 389. 



Q. 



Quanah Mountains, 325. 

 Quarry, 89, 156, 163. 

 Quartz, 226, 259, 389. 

 Quartzites, 371. 

 Quaternary, xxxii. 

 Quaternary conglomerate, 29, 60. 

 Quitman Mountains, li, lvii, 219, 220, 221, 

 223, 225, 229, 231, 232, 234. 



R. 



Rabb's pasture, 369. 



Raft, 13. 



Raggedy Creek, 196. 



Ragsdale Mountain, 8, 69, 



Railroads, 229. 



Rainfall, 179, 194, 226, 227. 



Rains County, 35, 97. 



Ramsey's pasture, 165. 



Ranch Creek, 285. 



Rare minerals, 361, 363. 



Red Bluff, 29. 



Red River, 321, 323, 327. 



Red soils, 36. 



Reefs in rivers, 41. 



Refractory materials, 374. 



Region, Black Prairie, 107. 



Grand Prairie, 116. 

 Relations of Wichita Mountains to Central 



area, 319. 

 Reports of G-eologists, lxxvii. 



T. B. Comstock, lxxxviii, 239. 



W. F. Cummins, Carboniferous, 1 xxxii, 

 145. 



! Reports of Geologists — 



W. P. Cummins, Permian, 183. 



E. T. Dumble, xvii. 



R. T. Hilll, xxxiii, 103. 



R. A. P. Penrose, Jr., 3. 



W. von Streeruwitz, lxxix, 219. 



R. S. Tarr, 201. 

 Reservoirs, 227. 

 Results, xxix. 



Review of Texas Geology, xxix. 

 Reynosa beds, 63. 



limestone, 57, 58, 63. 

 Rhacophyllum, 311. 

 Richland Creek, 151, 164, 168, 177, 202. 



Gordon sandstones, Ixv. 



Springs, 151, 168, 170, 177. 



sandstone, 204. 

 Riddell, W. P., 244. 



Riley Mountains, lvii, 272, 276, 278, 287, 

 313, 346, 350, 351, 352, 372. 



series, lxi, 286. 

 Ringgold Barracks, 57. 

 Rio Azul, 234. 

 Rio Concho, 234. 

 Rio Escondido, 40. 



Rio Grande bottom, 226, 232, 233, 234, 235. 

 City, 57. 

 region, 38. 



climatic conditions, 39. 

 old table land, 39. 

 section, 38, 56. 



character of rocks, 38, 39. 

 silt, 62. 

 timber, 39, 40. 

 valley, xxv. 

 River bottom soils, 36. 

 Riverside farm, 169, 173, 175. 

 River silt, 60. 



cause of differences, 60, 61. 

 Robertson County, Calvert bluff, 26, 97. 

 Rochelle, 204, 205. 



conglomerate bed. 205. 

 Rock Fort, 375. 

 Rockland, 35. 

 Rocky Cedar Creek, 19, 20. 

 Rocky Creek, 154, 296. 

 Rcemer, Dr. Ferdinand, xxii, 5, 38, 49, 64, 

 120, 122, 125, 241, 242, 243, 247, 252. 

 Roessler, A. R., 248. 

 Roma, 46, 47, 56, 57, 89. 



beds below, 46. 

 Ronguillo grant, 230. 

 Rosfilas Mountains, 233. 

 Rough Creek, 149, 174. 

 Round Rock, 128. 

 Rusk, 9, 101. 



County, 72. 



General, 100. 



section, 31. 

 Ryan, 232. 



s. 



Sabinas coal, xlix. 

 Sabine County, xlii. 



Sabine River, 7, 11, 12, 32, 35, 61, 86, 95. 

 beds, 22. 



