520 
INDEX. 
Page. 
Boutwell,  J.  M.,  paper  by,  on  Park  City 
mining  district,  Utah 141-150 
paper  by,  on  rock  gypsum,  at  Nephi, 
Utah 483-487 
papers  by,  titles  and  descriptions  of 24 
work  of 25 
Boutwell,  J.  M.,  and  Keith,  Arthur,  profes- 
sional paper  in  preparation  by  .        20 
Brooks,  A.  H.,  cited  on  Alaskan  geology ...      47, 
48,58,64 
paper  by,  on  placer  mining  in  Alaska. .  43-59 
title  and  description  of 20 
stream  tin  found  in  Alaska  by 155 
Brooks,  A.  H.,  and  Schrader,  F.C.,  cited  on 
Alaskan  geology 52 
Brooks,  A.  H.,  and  others,  cited  on  Alaskan 
geology 52 
Brookville  clay,  analyses  of,  from  Pennsyl- 
vania, Ohio  Valley  „ 468 
occurrence  and  uses  of 467-468 
Brownsville  anticline,  Pennsylvania,  course 
of 403 
Buck  Creek,  Alaska,  tin  deposits  of 162-165 
Buhner  Creek,  tin  deposits  on 165 
Building  stone,  California 179 
Bulletins  of  U.  S.  Geological  Survey,  char- 
acter and  distribution  of 12 
Bully  Hill  district,  California,  copper  de- 
posits of 174-176 
Burchard,  E.  F.,  paper  by,  on  lignites  of 
middle     and    upper     Missouri 
Valley 276-288 
Burrows,  J.  S.,  paper  by,  on  Barnesboro- 
Patton  coal  field 295-310 
Butts,  Charles,  paper  by,  on  coal  mining  in 
Wilrnore  basin,  Pennsylvania.  325-329 
C. 
California,  building  stones  in 179 
chromitc  deposits  in 177-179 
clay  deposits  in 178 
copper  deposits  in 172-176 
gold  deposits  in 170-172 
iron  ores  in 178 
limestone  in 176-177 
metalliferous  deposits  of,  work  on 22 
salt  industry  in „ 494 
slate  deposits  of 417-421 
Calkins,  F.  C,  work  of 23 
Campbell,  M.  R.,  paper  by,  on  Deer  Creek 
coal  field,  Arizona 240-258 
paper  by,  on  Meadow  Branch  coal  field 
of  West  Virginia 330-344 
work  of 25 
Canada,  iron  ores  in , 220 
Candelaria,  Nevada,  coal  deposits  between 
Silver  PeaL  and 289-292 
Candle  Creek,  Alaska,  gold  from,  character 
of 79 
gold  placers  in 77-7C 
Cape  Mountains,  Alaska,  tin  deposits  of. .  160-162 
Cape  Yaktag  petroleum  field,  Alaska,  loca- 
tion and  geology  of 371 
Carbonate  mining  district,  South  Dakota, 
ore  deposits  of 138-139 
Catlett,  Charles,  paper  by,  on  cement  re- 
sources of  valley  of  Virginia..  457-461 
Page. 
Cement,  analyses  of,  from  Lehigh  district..      454 
publications  on,  list  of 462 
Cement  resources,  Alabama 424-447 
Valley  of  Virginia 457-461 
Cement  rocks  and  cement  industry  of  Le- 
high district 448-456 
Chappelle  shaft,  West  Virginia,  coal  in 339 
Chatham  Creek,  Alaska,  gold  placers  on. . .  70 
Chenoa  coal,  occurrence  and  thickness  of. .  265 
Chicken  Creek,  Alaska,  placer  mining  on. .  57 
Chigmit  Mountains,  Alaska,  general  section 
of 377 
Chili  Bar  Slate  Company  quarry,  Califor- 
nia, slate  at 420 
Chromite,  analyses  of 178 
Chromite  deposits,  California 177-178 
Chromium,  papers  on,  titles  of 168 
Clarion   clay,    occurrence    and    thickness 
of 468-469 
Clarksville  oil  field,  Pennsylvania,  petro- 
leum in 409 
Clay,  analyses  of,  from  Alabama 433-434 
analyses  of,'  from  Pennsylvania,   Ohio 
Valley 468,  471,  473,  476 
definition,    origin,    and    physical    and 
chemical  properties  of 463-466 
papers  on,  list  of 481 
Clay  deposits,   Alabama,  cement  material 
in 429-431 
California 178-179 
Pennsylvania 466-477 
Clay  industries  in  Ohio  Valley,  Pennsylva- 
nia    477-480 
Cleary  Creek  and  tributaries,  Alaska,  gold 
placers  on 70-71 
Clements,  J.  M.,  work  of 25, 215 
Clover  Leaf  gold  mine,  Black  Hills,  South 
Dakota,  ores  in 129-130 
Coal,  analyses  of,  from  Alaska,  Bering  River 
coal  field 374 
analyses  of,  from  Arizona,  Deer  Creek 
coal  field 254,  255,  256 
from  Kentucky,  Harlan  district 275 
Middlesboro  coal  field 266 
from  Nevada,  Esmeralda  County.  290,291 
from     Pennsylvania,    Barnesboro- 
Patton  coal  field. .  298, 301, 302, 307, 309 
Bernice  Basin 375 
Elders  Ridge  coal  field 322 
from  Tennessee,  Middlesboro  coal 
field 266 
from  West  Virginia,  Meadow  Branch 
coalfield 341 
from  Wyoming,  Bighorn  Basin 362 
deposits  of,  Alaska 41-42, 80 
Arizona 240-258 
Kentucky 259-275 
Nevada 289-292 
New  Mexico 293-294 
Pennsylvania 295-329 
Tennessee 259-275 
West  Virginia 330-344 
Wyoming 345-361 
gas-producing  capacity  of 281 
publications  on,  list  of 363-364 
Cody  district,  Wyoming,  coal  in 348 
