504 
INDEX. 
Page. 
Stinking  Lake  district,  N.  Mex.,  coal  of . .  248-249 
coal  of,  sections  of 249 
Stone,  invest  igation  of 24 
Stone  Canyon  coal  mine,  coal  from,  analysis 
'  of 244 
section  at.  Qgure showing 224 
Stonewall  Mountains,  New,  ore  deposits  at        70 
Stose,    G.    W\,   on   glass-sand   industry   in 
West  Virginia 473  475 
Striped    Peak    formation,    occurrence    and 
character  of 43, 131 
si  one  Canyon,  Cal.,  coal  from,  analyses  of..       224 
Stoneware,  production  of 426 
Structural  materials,  investigation  of 23-24 
Sugar  Loaf  Mountain,  clays  near,  analysis 
of 408,409 
Sullivan,  E.  C,  analysis  by 147 
Sulphur,  bibliography  of 485 
investigation  of 24 
occurrence  of 315 
Sunnyside,  Utah,  coal  at 295 
coal  at,  analysis  of 294 
Sunrise,  Wyo.,  iron  ores  at 194  195 
Syenite,  occurrence  and  character  "1" .    132, 140-141 
Sylvanite,  Montana,  mines  of,  description  of       49 
Sylvanite  mine.  Colo.,  minerals  in 26 
production  of 
T. 
Tail'.  J.  A.,  on  Book  Cliffs  coal  field 289  302 
,,n  Weber  River  coal  field 285  288 
work  of 23,206 
Tavern  Rock  Sand  Co.,  111.,  glass  sand  of.   466-467 
Taylors  Peak,  Colo.,  iron  ores  on L96  L97 
Taylor's  pit,  Wyo.,  bentonite  in 146  1 17 
analysis  of : 446 
Tennessee,  ball  clay s  of 123    124 
brick  in 427 
clay  miners  in 427 
•  lays  of 417  427 
analyses  of ,    121,424,  125 
local  imi  of,  map  showing 418 
production  of 426-427 
sections  of 422-423 
copper  in no  120 
production  of 93,119 
smelting  of 96-120 
geology  of 417    lis 
limestone  in 374  375 
analysis  of 37.5 
shah'  in {?:,  376 
analysis  of 37:,  370 
stoneware  produced  in 427 
work  in 21 
Tensleep  sandstone,  asphaltum  in 310 
Tertiary  rocks,  clays  of 419-426 
coal  in 280 
gold  in :,f,  .",7 
occurrence  of 321 
Texada  Island,  B.  C,  iron  ores  of 196 
Texas,  tin  deposits  of 146-149 
work  in 17, 19 
Texas  Creek,  Colo.,  coal  at,  section  of 245 
Thermopolis    Hot   Springs,    Wyo.,    waters 
of 314-315 
waters  of,  analysis  of 315 
Page. 
Third  ('reek,  N.  Dak.,  lignite  on,  section  of.      324 
Thomaston,  Me.,  limestone  near,  descrip- 
tion of 393. 399-400 
limestone  near,  location  of,  map  show- 
ing        394 
section  of,  figure  showing 397 
Thomaston    Face   and    Ornamental    Hrick 
Co.,  plant  of 429 
Tile,  decorated,  formula  for  making 422 
Tin  deposits,  bibliography  of 1G5 
of  Franklin  Mountains,  Texas. 146-149 
Tintic,  Utah,  copper  of 121 
copper  of,  gold  and  silver  in 95 
production  of 123 
Tokop,  New,  ore  deposits  of 62-63 
Tom  Thumb  mine,  Colo.,  description  of 32 
Tongue    River  (South    Fork),    Wyo.,   gold 
near 308 
Tonopah,  New.  description  of 53 
Tonopah  district,  work  in 18 
Torchlight,  Kw,  coal  at ,  sections  of 262 
Torreones,   Arroyo  de  los,  coal  near,  section 
of 251 
Trappman,  Eermann,  ores  discovered  by. .        68 
Trappmans  Camp,  Nev.,  ore  deposits  at  .  . .   68-69 
Travertine,  occurrence  of 36 
Ties  llermanas,  N.  Mex.,  rocks  of 83 
Triceratops,  occurrence  of 240 
Tri-Metallic  Mining  Co..  mines  of (>0 
Trout  Creek  Canyon  dist  rict,  Colo.,  coal  of, 
analysis  of 230 
Troy  district,  Moid.,  mines  of    description 
of 4s   lit 
'Truro  region,  Mass.,  clays  of 435   136 
Tungsten,  bibliography  of 186 
Turquoise,  occurrence  of 70-71 
Tweedy,  Frank,  map  by 35 
Twenty  mile  basin.  Colo.,  coal  of 228-232 
coal  of,  analyses  of 229  231 
Twin  Creek,  Wyo.,  oil  on 343 
'I' win  Creek  coal,  Wyo.,  analyses  of 341 
occurrence  of 337-338 
U. 
1  lrich,  K.  <>.,  section  by 185 
work  of 17 
(  ucompahgre  region,  Colo.,  geology  of 402 
gypsum  deposits  of 401-403 
1 1, cat  mn  of,  map  showing 401 
sect  ions  of 402-403 
Union  Pacific  Hail  road,  oil  lands  of 343-344 
oil  of,  analyses  of 351-352 
Union  Pacific  Coal  Co.,  coal  of 338 
coal  of,  analysis  of 339 
United  States,  copper  deposits  of 17 
work  in 17-19 
United  States  Silica  Co.,  glass  sand  of 405 
United  Verde  smelter,  production  of 99 
Utah,  coal  in 205,  284-302 
coal  fields  of,  maps  showing 280,290 
copper  in 121-123 
gold  and  silver  in 95, 121-123 
production  of 93,  121 
iron  ores  of,  mapping  of 100.  200 
mines  in s7  00 
ozokerite  in 300-372 
Piute  County,  gold  in .' 87 
