INDEX. 
493 
Page. 
California,  diatomaceous  earth  in,  geologic 
relations  of 439-440 
distomaceous  earth  in,  production  of  . .      446 
See  also  Diatomaceous  earth. 
inagnesite  deposits  of,  work  on 24 
metalliferous  ores  in,  work  on 16 
Calkins,  F.  C,  cited  on  geology  of  part  of 
Washington 58 
cited  on  topography  of  Big  Bend  coun- 
try in  Washington 57 
section  of  sedimentary  rocks  in  Philips- 
burg  quadrangle  supplied  by . . .  33-34 
work  of 17,31 
Calkins,  F.  C,  and  Smith,  G.  O.,  cited  on 
geology  of  part  of  Washington. .        59 
Campbell,  B.  H.,  quarry  of,  section  at 349 
Campbell,  M.  R.,  work  of,  reference  to 7 
Caney  Fork,  N.  C,  mica  on 414 
Canton  Tile  Hollow  Brick  Company,  clay 
pit  of,  section  in 338 
Carboniferous  rocks,  phosphates  in.. .  449,451-452 
use  of,  for  glass  making 365, 367 
Carlisle,  Pa.,  clay  beds  mined  near 322-334 
Carnotite.  deposits  of,  in  Colorado,  paper 
on 110-117 
Carolina  gneiss,  mica  in 403-404 
Carson,  J.  P.,  analysis  by 209 
Casmalia,  Cal.,  diatomaceous  earth  near.  .443-444 
Cason  shale,  description  of 466 
manganese  in 466 
phosphates  in 466 
Cassville,  Wis.,  geologic  section  near 226 
Cathance,  Me.,  feldspar  at. 390-391 
feldspar  mills  at 387-390 
Catlett,  Charles,  cooperation  with 268 
Cattail  Branch  mine,  N.  C,  description  of.  410-411 
Cay  wood  claim,  Colo.,  carnotite  deposits 
at 113-114 
Cebada  Canyon,  Cal.,  diatomaceous  earth 
in 442-443 
Cement  resources,  work  on 23 
Cements,  Survey  publications  on 245-246 
work  on 225-244 
Central  Silica  Company,  quarries  of 373 
Chalfants,  Ohio,  glass  sand  at 367, 373 
glass  sand  at,  analysis  of 376 
Chalk  rock.    See  Diatomaceous  earth. 
Champion  Shaft,  Colo.,  rocks  and  ores  at. . .  28-29 
Chandler,  C.  F.,  analysis  by 176 
Chander  mine,  Minn.,  copper  at 101 
Charter  Oak  copper  prospects,  Wyo.,  rocks 
and  ores  at 96 
Chattanooga,  Tenn.,  glass  works  at 378 
Chattanooga  Paint  Company,  ores  of,  analy- 
sis of 434 
Cheltenham,  Mo.,  clay  resources  at 315-321 
Cheney  Marble  and  White  Lime  Company, 
quarry  of,  limestone  at,  section 
of 251 
Chepultepec,  Ala.,  quarry  at,  limestone  at, 
section  of 251 
Cheyenne,  Wyo.,  vicinity  of,  discussion  of, 
as    site    for    Portland    cement 
plant 239-244 
Chickamauga  limestone,  analyses  of 251 
Bull.  315—07 32 
Page. 
Chickamauga  limestone,  description  of. . .  250-252 
section  of 251 
Childersburg,  Ala.,  magnetite  near,  analy- 
ses of 176 
Chink  Knob  prospect,  N.  C,  description  of.      416 
section  of,  figure  showing 416 
Chromium,  Survey  publications  on,  list  of..       129 
Chrysoprase,  occurrence  of,  in  Oregon 124 
Chugwater    Creek,    Wyo.,    iron    ore    from, 
analysis  of 209 
Citizens'  Coal  Company,  mine  of, clay  from, 
analysis  of 348 
Clarion  clays,  occurrence  of 337-338 
Clarion  Junction,  Pa.,  clay  near 341 
Clarion  quadrangle,  Pa.,  clays  and  shales 
in,  paper  on 335-343 
Clark  mine,  N.   Mex.,  clay  from,   analysis 
of 300 
Clarke,  F.  W.,  analyses  by 123,126,220,221 
paper  by,  on  nickel  ores  from  Oregon, 
reference  to 120 
Clarkville,  N.  Mex.,  clay  from,  analysis  of. .      300 
Clay,  analyses  of 230, 272, 307, 308, 310, 311, 312, 
313. 314, 325, 340, 347, 348, 351, 352 
bleaching  power  of 286 
papers  on 268-355 
Alabama 291-295 
Colorado 296-302 
Georgia 303-314 
Missouri 315-321 
New  Mexico 296-302 
Pennsylvania 322-334 
Survey  publications  on 355 
uses  of 333-334 
tests  of 275 
work  on -     24 
Clays  and  clay  products,  papers  on 268-355 
Clays  and  shales,  Cambria  County,  Pa.,  pa- 
per on 344-354 
Clarion  County,  Pa.,  paper  on 335-343 
Clay  beds,  Missouri,  sections  of 317-318 
Clayton,  Mo.,  section  of  clay  beds  near 317 
Clements,  J.  M.,  cited  on  copper  in  mines  of 
Minnesota 101 
Cleveland  tunnels,  Colo.,  country  rock  and 
mineralization  at 28 
Clinton  iron  o.  as,  mining  of 430-431 
origin  of 149 
paper  on 130-151 
use  of,  in  paint  making 430 
Coal  Creek  district,  Colo.,  geology  of 112-113 
Coaldale,  Ala.,  section  at 293 
Cokeville,  Wyo.,  phosphates  near 456-457 
section  near,  figure  showing 456 
Collier,  A.  J.,  paper  by,  on  gold-bearing  river 
sands  of  northeastern  Washing- 
ton   56-70 
work  of 19 
Colloids,  absorption  of  organic  coloring  mat- 
ter by 285,287 
definition  of 280 
presence  of,  in  fuller's  earth 280-282 
properties  of 281-282 
Colorado,  carnotite  in,  paper  on 110-117 
gold  and  silver  deposits  in,  report  on. . .  26-30 
