60  PUBLICATIONS    OF    IT.    S.   GEOLOGICAL    SURVEY.         [bull.  177. 
Aluminum,  by  R.  L.  Packard,  j>j».  147-163. 
Tin,  pp.  164-166. 
Nickel  and  cobalt,  pp.  167-170. 
Chrome  iron  ore,  pp.  171-173. 
Antimony,  by  E.  W.  Parker,  pp.  174-1 76. 
Coal,  by  E.  W.  Parker,  pp.  177-356. 
Pennsylvania  anthracite,  by  John  H.  Jones,  pp.  288-304. 
The  coal  fields  of  Texas,  by  Robert  T.  Hill,  pp.  326-328. 
The  manufacture  of  coke,  by  Joseph  D.  Weeks,  pp.  357-402. 
Petroleum,  by  Joseph  D.  Weeks,  pp.  403-435. 
Natural  gas,  by  Joseph  D.  Weeks,  pp.  436-451. 
Asphaltum,  by  E.  W.  Parker,  pp.  452-455. 
Stone,  by  Wm.  C.  Day,  pp.  456-473. 
Granite,  pp.  456-460. 
Sandstone,  pp.  460-463. 
Limestone,  pp.  464-468. 
Marble,  pp.  468-471. 
Slate,  pp.  472-473. 
Clay  materials  of  the  United  States,  by  Robert  T.  Hill,  pp.  474-528. 
Natural  and  artificial  cements,  by  Spencer  B.  Newberry,  pp.  529-538. 
Precious  stones,  by  George  Frederick  Kunz,  pp.  539-551. 
Abrasive  materials,  by  E.  W.  Parker,  pp.  552-556. 
Buhrstones,  p.  552. 
Grindstones,  pp.  552-553. 
Oilstones  and  whetstones,  pp.  553-555. 
Emery  and  corundum,  pp.  555-556. 
Fertilizers,  pp.  557-563. 
Sulphur,  by  E.  W.  Parker,  pp.  564-571. 
Salt,  pp.  572-578. 
Bromine,  p.  579. 
Gypsum,  by  E.  W.  Parker,  pp.  580-583. 
Magnesite,  pp.  584-585. 
Fluorspar,  p.  586. 
Borax,  pp.  587-588. 
Graphite,  by  E.  W.  Parker,  pp.  589-590. 
Asbestos,  by  E.  W.  Parker,  pp.  591-592. 
Soapstone,  by  E.  W.  Parker,  pp.  593-594. 
Mineral  paints,  by  E.  W.  Parker,  pp.  595-598. 
Barytes,  pp.  599-600. 
Mineral  waters,  by  A.  C.  Peale,  pp.  601-610. 
Index,  pp.  611-630. 
Department  of  the  Interior  United  States  Geological  Survey  J.  W. 
Powell  Director  Mineral  resources  of  the  United  States  Calendar 
year  1892  David  T.  Day  chief  of  division  of  mining  statistics  and 
technology  [Vignette]  Washington  Government  Printing  Office 
1893 
8°,  vii,  850  pp.     Bound  in  black  cloth.     Price,  50  cents. 
Summary,  pp.  1-11. 
The  American  iron  trade  in  1892,  by  James  M.  Swank,  pp.  12-22. 
Iron  ores,  by  John  Birkinbine,  pp.  23-45. 
Progress1  of  the  precious  metal  industry  in  the  United  States  since  1880,  by  S.  F. 
Emmons,  pp.  46-94. 
Copper,  by  C.  Kirchhoff,  pp.  95-120. 
