INDEX. 
497 
'     Page. 
Haystack  Hills,  Wyo.,  graphite  in 426-428 
iron  ores  in 205 
Haystack  Peak,  Wyo.,  copper  minerals  at. .        97 
Heacock  Mountain,  Ala.,  iron  ores  of,  analy- 
ses of 176,177 
prospects  on,  description  of 1(38-170 
Hebron,  Me.,  feldspar  near 392-393 
pegmatite  at 384 
Hell  Gate  Bar,  Wash.,  gold-bearing  sands 
at 62-63 
Heidrick,  C.  F.,  farm  of,  clay  on 341 
Hematite,  mining  of 430-431 
occurrence  of 134-146, 
174-178, 197, 198-199, 203, 204, 205 
origin  of 179-181, 197-198, 200-201 
use  of,  in  paint 430-434 
Henry  Clay,  Pa.,  clay  deposits  near. . .  327, 331-333 
Hephzibah,  Ga.,  clay  beds  near 311-312,314 
Herrick,  H.  N.,  cited  on  gypsum  in  New- 
Mexico  260 
Hess,  F.  L.,  work  of 24 
Hewett,  Foster,  cited  on  occurrence  of  va- 
nadium in  carbonaceous  depos- 
its         116 
Hillebrand,  W.  F.,  analyses  by 95 
quoted  on  coal  as  a  source  of  vanadium.       116 
Hillebrand,    W.   F.,  and   Ransome,   F.   L., 
quoted  on  carnotite  of  Colorado.      Ill 
Hillman, ,  analyses  by 177 
Hobbs,  W.  II.,  cited  on  copper  in  Minnesota.       101 
Hobby,  Albert,  quarry  of 398 
Hobby  quarries,  N.  Y.,  feldspar  from 398-399 
Hodges,  R.  S.,  analyses  by 178 
Hoffer,  I.  L.,  information  furnished  by..  78,79,80 
Holland,  Ohio,  glass  sand  at 367, 371-372 
section  at,  record  of 372 
Holmes,  J.  A.,  acknowledgments  to 232 
Hood,  Doctor,  analyses  of  nickel  ore  by 123 
Hope  Hill,  Mont.,  discovery  of  ores  at 32 
Hopkins, T.  C.,citedon  clays  of  South  Moun- 
tain, Pa 322, 324, 325, 327, 334 
quoted  on  Izard  limestone 465 
Horace  Thompson  mine,  N.  C,  description 
of 411-412 
Hot  Springs,  Idaho,  phosphates  at 461 
Howard,  Mike,  farm  of,  clay  on 341 
Howe,  Ernest,  Cross,  Whitman,  and  Ran- 
some, F.  L.,  cited  on  Silverton 
mining  district 26 
Hoyer,  Peter,  acknowledgments  to 93 
Huey,  Pa.,  clay  at 338 
Hudson  schist,  occurrence  of 394-395 
Hulst,  N.  P.,  cited  on  production  of  titan- 
iferous  iron  ores  in  Sweden 211 
L  • 
Idaho,  geology  of  southeastern  part  of . . .  450-454 
gold  placers  in 80-86 
phosphates  in,  description  and  geology 
of 449-454 
occurrences  of 457-462 
section  in 450-451. 
structure  in 453-454 
Illinois,  glass  sand  of,  marketing  of 363 
Page. 
Illinois  Boy  mining  prospect,  Colo.,  opera- 
tions and  ores  cut  by 28 
Indiana,  glass-making  materials  in 36]   363, 
364  366 
glass-making  materials  in,  analyses  of.      376 
glass  products 361  362 
glass-sand  quarries  in 362, 366  369 
Mansfield  sandstone  in 365  366 
Indiana  Geological  Survey,    maps  and    re- 
ports of 366 
Indiana,  Kentucky,  and  Ohio,  glass-sand  in- 
dustry of,  paper  on 361  376 
Infusorial  earth.    See  Diatomaceous  earth. 
Iowa,  cement  resources  of,  work  on 23 
glass  sand  in 378-379 
Portland  cement  materials  in,  work  on  22.5-231 
Iowa  College  of  Agriculture  and  Mechanic 
Arts,  analytical  work  at 225 
Iowa  Geological  Survey,  cooperation  of 225 
Iron  Mountain,  Wyo.,  geography  of 206-207 
geology  of 207-210 
titaniferous  iron  ore  of,  paper  on 206-212 
Iron  ores,  analyses  of 135, 154, 176, 177, 178, 209 
beds  containing,  description  of 139-144, 
154-155,  166-174,  196-205 
sections  of 141-144, 145 
production  of,  in  Alabama 150-151 
sections  of  Rockwood  formation  con- 
taining    136-139, 144-145 
Survey  publications  on,  list  of 213-214 
work  on 20-22, 130-212 
Irondale,  Ala.,  geologic  sections  near 136, 141 
Iverson,  B.  A.,  work  done  in  conjunction 
with 71 
Izard  limestone,  description  of 465-466,  473 
J. 
Janes,  W.  E.,  analysis  by 255 
Johnson  mine,  N.  C,  mica  in 409 
Johnstown,    Pa.,   brick  and  clay  industry 
near,  statistics  of 353-354 
clays  and  shales  near 346-350 
Johnstown  Pressed  Brick  Company,  plant 
of,  section  at 346 
Johnstown  quadrangle,   Pa.    See  Cambria 
County. 
Jones, ,  cited  on  diffusion  of  colloids  as 
compared  with  crystalloids 282 
Julian  Gap,  Term.,  paint  ore  near 433-434 
K 
Kahatchee  Hills,  Ala.,  iron  ore  in,  occurrence 
of 172 
Kaolin,  analyses  of  . . .  307, 308, 310, 311, 312, 313, 314 
paper  on 303-314 
Kansas,  glass  sand  in 379-380 
glass  works  in 379 
Katala  Hills,  Ala.,  iron  ore  in,  occurrence 
of . 172-173 
Kay,  G.  F.,  paper  by,  on  nickel  deposits  of 
Nickel  Mountain,  Oreg 120-127 
work  of 18 
Kelley,  W.  T.,  acknowledgments  to 93 
