scHMECKEBiEK] POWELL, AND WHEELER SURVEYS. 181 



Silica, infusorial. analytJiH of, from Nevada, Kawsoh Mountains K, ii, \> 768 



Silliuian ( B. ), the telluride oreH of the Red Cloud and Cold Spring nunes, Gold 



Hill H, Ann 7, pp 688-691 



Silurian fossils: invertebrates of Fortieth Parallel rejj;ion K, iv, i)p 17-25,205-246 



invertebrates of Nevada and New jVIexico W, Unci 6, pp 6-14 



of Nevada, Utah, New Mexico, and Arizona W, i v, pj) 32-78 



of Southwest W, I V, pp 32-78 



(See, also, Invertebrates, fossil.) 



of Montana, Utixh, and Wyoming H, Ann 6, pp 431-132, 463-465, 479-187 



(See, also, Vertebrates, fossil; Invertebrates, fossil.) 

 Silurian rocks of Basin Range W, rii, pp 180-186 



of Black Hills BH, pp 80-107 



of Colorado, central W, in, pp 355-361 



Eagle and Grand rivers H , Ann 8, pp 1 10-1 14 



northwestern H, Ann 10, p 23 



Sangre de Cristo Range H, Ann 9, p 113 



of Idaho, Bear River Range H, Ann 11, p 613 



of Wyoming, Sweetwater Valley H, Ann 11, pp 101-103 



Wind River Range H, Ann 11, pp 70-73 



Silurian and Cambrian rocks of Great Basin K, i, pp 184—221 



Silver in New Mexico, Santa Fe, vicinity of W, iii, Supp, pp 403-404 



Silver Bend district, Nevada, notes on W, 1871, pp 41-42 



Silver Era Peak, California, geology of W, 1878, pp 181-183 



Silver Mountain district, California, notes on W, 1878, pp 88-89 



Silver ore, treatment of, in Colorado K, in, j^p 606-616 



Silver Peak and Red Mountain districts, Nevada, notes on W, 1871, pp 48—19 



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



Silver mining in Colorado, Georgetown district K, in, pp 589-605 



in Colorado, Snake River region K, in, pp 617-624 



Sinter, siliceous, analysis of, from Nevada, Virginia Range K, n, p 826 



Sit-ka-kwan language, vocabulary of Eth, i, pp 121-133 



(See, also. Ethnology and archaeology. ) 



Sioux Lake (Tertiary), extent of K, i, pp 451-454 



Sirenia, bibliography of Cete and H, Bull, vol vi. No 3, pi:> 399-562 



( See, also. Vertebrates. ) 

 Skat-kwan language, vocabulary of Eth, i, pp 1 21-133 



(See, also. Ethnology and archjeology. ) 

 Skeletons and crania collected in 1872-1874, notes on W, vn, pp 391-397 



(See, also, Ethnology and archaeology.) 

 Skit-a-get language, vocabulary of Eth, i, pp 136-142 



( See, also, Ethnology and arch;eology. ) 

 Skokomish Reservation, Washington, Twana Indians of, customs, language, 



etc., of H, Bull, vol in, No 1, pp 57-114 



(See, also, Ethnology and archaeology.) 

 Skoylpeli language, vocabulary of Eth, i, ])p 248-265 



(See, also, Ethnology and archseology. ) 

 Skull from Chaco Canyon, New Mexico, report on H, Ann 10, pp 453-457 



(See, also. Human remains; Cranium; Ethnology and archseology. ) 

 Skulls from Santa Barbara Islands, California, observations on... W, vn, pp 277-292 



(See, also, Human remains; Cranium; Ethnology and archfeologj'. ) 

 Skulls and skeletons collected in 1872-1874, notes on W, vn, pp 391-397 



(See, also. Human remains; Cranium; Ethnology and archteology. ) 



Slate of Black Hills, petrography of BH, pp 476-483 



Slate Creek, Wyoming, geology near H, Ann 11, pp 531-o32 



