SCHMECKEBIEE.] POWELL, AND WHEELEK SURVEYS. 91 



Colorado, San Luis Valley, agriculture in H, Ann 4, pp 197-202 



San Luis Valley, cultivable areas in H, Ann 10, pp 328-330 



geology and topography of H, Ann 9, pp 140-149 



physical features of W, 1876, pp 86-88 



San Miguel Mountains, geology of H, Ann 10, pp 193-195 



San Miguel region, physical features of W, 1876, pp 98-100 



Sangre de Cristo Range, geology of H, Ann 9, pp 108-139 



Sawatch Eange, geology of H, Ann 9, pp 150-175 



section, geologic, in. (See Section, geologic, in Colorado.) 



Sierra El Late, geology of H, Ann 9, pp 272-274 



silver and gold mines of H, Ann 3, pp 87-89; H, Ann 1-3, pp 187-189 



silver mining in Georgetown district K, iii, pp 589-605 



Snake Eiver region, silver mines in K, iii, pp 617-624 



Sneffels, Mount, ascent of H, Bull, vol i, ser 2, No 3, pp 193-199 



Sopris Peak, geology of H, Ann 8, pp 61-63 



South Park, fishes of Tertiary shales of H, Bull, vol i, ser 2, No 1, pp 3-5 



geology of ....H, Ann 3, 



pp 79-81; H, Ann 1-3, pp 179-181; H, Ann 7, pp 36-39, 212-225 



topographic features of H, Ann 9, pp 419-431 



South Platte drainage basin, cultivable areas on H, Ann 10, pp 323-326 



Spanish Peaks, description of H, Bull, vol iii. No 3, pp 551-552 



volcanic rocks of H, Ann 9, pp 131-136 



Spanish Peaks region, geology of W, 1879, pp 271-281 



spiders from, descriptions of two new H, Bull, vol iii. No 2, pp 528-529 



springs near Colorado City H, Ann 3, pp 118-120; H, Ann 1-3, pp 116-118 



stratigraphy and Pliocene vertebrate paleontology of northern H, Bull, 



vol I, ser 1, No 1, pp 9-28 



Tarryall Range, topographic features of H, Ann 9, pp 411^12 



temperature in, compared with eastern cities H, Ann 9, p 355 



Tertiary lake basin at Florissant H, Bull, vol vi. No 2, pp 279-300 



Tineinaof H, Bull, vol iii. No 1, pp 121-142 



distribution of H, Bull, vol iii, No 1, pp 147-150 



topographic map of. (See Map, topographic, Colorado. ) , 



triangulation in H, Bull, vol iii, No 3, pp 706-728; H, Ann 10, pp 275-310 



Trinidad, astronomical determinations at W, ii, pp 289-312 



Trinidad region, geology of H, Ann 9, pp 192-207 



Uinta Mountains, geology of eastern portion of UM 



Uncompahgre Plateau, geology and topography of ...H, Ann 9, pp 40-43, 49-50 



Uncompahgre region, physical features of W, 1876, pp 95-97 



Vermillion Creek, rocks exposed on K, i, pp 142-144 



Vermillion Creek Basin, geology of K, ii, pp 225-227, 275-277 



vertebrate paleontology of H, Ann 7, pp 427-533 



water resources of western Kansas and eastern H, Ann 4, pp 448-452 



West Plum Creek, geology near H, Ann 3, p 40; H, Ann 1-3, p 140 



White River district, geology of H, Ann 10, pp 61-131 



topographical report on H, Ann 10, pp 349-357 



Williams River Mountains, geology of H, Ann 7, pp 189-192 



Yampa Plateau, geology of K, ii, pp 282-286 



structure of UM, pp 202-203 



Yampa River district, topographical report on H, Ann 10, pp 359-378 



Yampa Valley, geology of upper. K, ii, pp 181-187 



Yampa Valley and Browns Park, geology of K, ii, pp 222-225 



(See, also. Fortieth Parallel region. ) 



Colorado City, Colorado, geology between Denver and H, Ann 3, 



pp 37-46; H, Ann 1-3, pp 137-146 



