INDEX. 
607 
Tage. 
California,  cement,  Portland,   in,  produc- 
tion of 498 
copper  mining  in 21(5 
gold  production  of 32 
from  copper  ores 37 
from  placers 33, 34 
from  quartz  veins 36 
gold  and  silver  in,  paper  on 45-49 
lead  production  of 254, 256 
mineral  resources  of  Indian  Valley  re- 
gion    45-49 
placer  deposits  in,  source  of 34 
silver  production  of 32 
from  copper  ores 42 
from  quartz  veins 41 
from  quartzose  ores ^  0 
tin  in 165 
work  in 25 
Calkins,  F.  C,  work  of 274 
Calliope  mine,  Colo.,  ore  deposits  of 57,59 
Cambria,  Wyo.,  coal  near 429-431 
Camp  Canyon,  Wyo.,  section  in 430 
Campbell,  H.  D.,  aid  by 531 
Campbell,  M.  R.,  on  Clallam  Bay  coal 420 
work  of 29 
Caney  oil  and  gas  pool,    Kans.,  location 
and  extent  of 451 
Canyon,  Colo.,  zinc  produced  at 270 
Canyon  Creek,  Colo.,  faults  on 54 
rocks  on 52-53 
Cap  au  Ores  sandstone,  correlation  of 234 
Carnotite,  occurrence  of 210 
Carter  coal,  occurrence  and  thickness  of  ..      370 
Cascade  Creek,  Colo.,  fissures  on 68 
Casey  prospect,  Mo.,  ore  at 235 
Cassiterite,  character  of 161 
tests  for 194-195 
Catoctin  schist,  copper  deposits  in 218 
Catlett,  Charles,  acknowledgments  to 531 
analyses  of  limestone  by 541, 543, 544 
Cavanal    coal,  occurrence  and    character 
of 390-391 
Cazin,  F.  N.  F.,  on  copper  deposits 225 
Cement  industry,  American,  work  on 31 
paper  on 496-505 
Cement  materials,  occurrence  of,  in  Vir- 
ginia    531-544 
Cement  resources  of  northeast  Mississippi, 
paper  on 510-521 
Cement  rock,  use  of,  for  Portland  cement.  500, 522 
Cement,  natural,  character  of 497 
composition  of 496, 501 
difference  between  lime  and 496 
difference  between    Portland    cement 
and 497 
manufacture  of 496, 501 
production  of 498 
Cement,  Portland,  character  of 497 
composition  of 497-499 
difference  between  natural  cement  and .      497 
difference  between  slag  cement  and.  503-505 
manufacture  of 497 
materials  for 499-501, 506-509 
production  of 498 
Cement,  Puzzolan,  composition  of 497, 503 
manufacture  of 497 
Bull.  260—05  m— 39 
Page 
Cement,  Puzzolan,  production  of 498 
use  of 503 
Cement,  slag,  composition  of 503,505 
difference    between    Portland   cement 
and 503-505 
manufacture  of 504 
production  of 498 
Cements,  analyses  of 521 
classification  of 496 
production  of,  value  of 49 1, 498 
publications  on,  list  of 545 
Centennial  mine,  Colo.,  bornite  in 108 
Chalcopyrite,  gold  content  of,  in  Colorado.       107 
occurrence  of,  in  Idaho 297 
Chalk,  use  of,  for  Portland  cement 500 
Chance,  H.M.,  work  of 382 
Chanute  shale,  character  and  thickness  of.      447 
Chapman,     Pearson,    topographic    special 
map  prepared  by 101 
Charleston  sandstone,  occurrence  and  char- 
acter of 427-428 
Chazy  limestone,  analyses  of 523 
occurrence  and  character  of 522-524 
Cherokee-Creek  coal  field,  Ind.  T.,  map  of  .      394 
stratigraphy,  structure,  and  coals  of..  393-397 
Cherokee  shale,  character  and  thickness  of.      449 
ore  in 264 
Cherry  vale,  Kans.,  gas  and  oil  field  near  ..      452 
Cherryvale  shale,  character  and  thickness 
of 448 
China,  tin  in 168 
Choctaw  coal  field,  Ind.  T.,  map  of 382 
stratigraphy,  structure,  and  coal  beds 
of 383-393 
Chromium,  publications  on 196 
Clallam  Bay,  Wash.,  coal  near 418-420 
Clallam  Bay  region,  Wash.,  section  in 415 
Clallam  County,  Wash.,  coal  in 413-421 
Clark  mine,  Va.,  zinc  at 269 
Clay,  absorption  of  copper  by 232 
analysis  of 515, 521 
use  of,  for  Portland  cement 500 
Clay    deposits  of  Washington,   occurrence 
and  character  of 550-558 
work  on 31 
Clay  industries  of  Independence  quadran- 
gle, Kans.,  paper  on 546-549 
Clays,  publications  on 564 
Clayton,  Wash.,  clay  deposits  near 556 
Cliftonville,  Miss.,  well  at,  log  of 517 
Coal,  analyses  of,  from  Alabama 379,380 
analyses  of,  from  Indian  Territory 387, 
390,391,392 
from  Washington 412, 420 
from  West  Virginia 425, 426, 428  • 
from  Wyoming 432 
in  Black   Hills,  Wyo.,  occurrence  and 
character  of 429-433 
in  Clallam  County,  Wash.,  occurrence 
and  character  of 413-421 
in  Indian  Territory,  work  on 382-401 
in  Nicholas  quadrangle,  W.  Va.,  occur- 
rence and  character  of 422-428 
in  Washington,  near  Portland,  Oreg., 
occurrence  and  character  of. .  411-412 
publications  on 434-435 
