INDEX 
A.  Page. 
Abrasive  materials,  publications  on,  list  of.      518 
Adams,  G.  I.,  paper  by,  on  Rabbit  Hole  sul- 
phur mines,  Nevada 497-500 
professional  paper  in  preparation  by. . .        20 
work  of 2G,  27 
Adirondack^,  New  York,  graphite  deposits 
in  eastern 512-514 
Alabama,  cement  resources  of 424-447 
Alaska,  coal  beds  in 41^2, 80 
gold  deposits  in 28-80 
gold  deposits  in,  Fairbanks  district 64-73 
Juneau  gold  belt 28-42 
Kotzebue  gold  field 74-80 
Porcupine  mining  district 60-63 
gold  placer  mining  in 43-59 
petroleum  fields  of 365-371 ,  376-382 
railway  projects  in 44 
telegraph  and  transportation  facilities 
in 43-44 
tin  deposits  in 154-167 
work  on  metalliferous  deposits  in 20-21 
Alaska-Treadwell  gold   mine,  location    of 
and  work  at 28-29, 39-40 
Alder  Beach,  Alaska,  gold  from,  character 
of 79 
gold  placers  at 78 
Allegheny  formation,  section  of 467 
Allport  coal  mine,  Pennsylvania,  operations 
at 299, 304 
Alpine  gold  mine,  Nevada,  deposits  at 114 
Alum,  deposits  of,  in  Nevada 501-502 
American  Creek,  Alaska,  placer  mining  on. .        57 
Amity  anticline,  Pennsylvania,  course  of  . .      405 
oil  wells  on 411 
Anikovik  River,  tin  deposits  on 165-166 
Appalachian  region,  investigations  in  ..  21-22,25 
Arizona,  coal  in 240-258 
Arkansas,  roofing  slates  in 414-416 
Ashley,  G.  H.,  paper  by,  on  Cumberland 
Gap  coal  field 259-275 
work  of 25-26 
Asphalts,  publications  on,  list  of 413 
Avonmore  coal  mine,  Pennsylvania,  opera- 
tions at 315 
B. 
Bain,  H.  F.,  cited  on  lignite  in  Iowa 279 
cited  on  well  at  Sioux  City,  Nebr 281 
paper  by,  on  fluorspar  deposits  of  south- 
ern Illinois 505-511 
on  lead  and  zinc  deposits  of    Illi- 
nois   202-207 
Page. 
Bain,  H.  F.,  paper  by,  on  reported  gold  de- 
posits  of   Wichita    Mountains, 
Oklahoma 120-122 
papers  by,  titles  and  descriptions  of 23 
work  of 27 
Bald  Mountain  area  of  ore  deposits,  South 
Dakota,  features  and  ores  of. .  135, 136 
Baraboo  district,  iron  ore  deposits  of 218-220 
Barite,   deposit  of,   in    southern   Pennsyl- 
vania    515-516 
Barnesboro-Patton     coal    field,     Pennsyl- 
vania, coals  of 297-310 
geology  of 296-297 
location  of 295 
sections  in 297, 298, 300, 301, 307, 309 
Basin  district,  Wyoming,  coal  in 356 
Bayard  sand,  occurrence  and  thickness  of.      402 
Bayley,   W.   S.,   cited  on  Menominee  dis- 
trict        215 
work  of 25 
Bear  Creek,  Alaska,  gold  from,  character  of.        79 
gold  placers  on 78 
Bellevernon       anticline,       Pennsylvania, 
course  of 404-405 
oil  fields  on 409-410 
Bennett  Fork  coal,   occurrence  and  thick- 
ness of 265-266 
Bering  River  coal  field,  Alaska,  coal  in..  371-375 
sections  in 372, 373 
Berkeley  County,  W.  Va.,  limestone  in..  516-517 
Berners  Bay,  Alaska,  gold  mining  on 38 
Bighorn  Basin,  Wyoming,  coal  in 347-361 
geology  of 345-347 
sections  in 348-358 
Big  Injun  sand,  occurrence  and  thickness 
of 400-401 
Birch  Creek  district,  Alaska,  placer  mining 
on 57 
Black  Hills  (northern),  ore  deposits  of...  123-140 
Blackshire  oil  pool,  Pennsylvania,  petro- 
leum in 407 
Blair  gold   mines,    Nevada,   deposits  and 
operations  at 112, 113 
Blake,  W.  P.,  cited  on  Deer  Creek  coal  field, 
Arizona 245 
Blake  coal  mine,  Wyoming,  coal  at 350 
Borax,  publications  on,  list  of 496 
Boulder  oil    field,  Colorado,  location   and 
structure  of 383-390 
map  of 384 
production  of 391 
Boutwell,  J.  M.,  paper  by,  on  iron  ores  of 
the  Uinta  Mountains,  Utah...  221-228 
519 
