54  PUBLICATIONS    OF    U.   S.   GEOLOGICAL    SURVEY.         [bull.  177. 
year  1885     Division  of  mining  statistics  and  technology     [Vignette] 
Washington     Government  Printing  Office     1886 
8°.     vii,  576  pp.     Bound  in  black  cloth.     Price,  40  cents. 
Summary,  pp.  1-9. 
Coal,  by  Charles  A.  Ashburner,  pp.  10-73. 
The  manufacture  of  coke,  by  Joseph  D.  Weeks,  pp.  74-129. 
Petroleum,  by  S.  H.  Stowell,  pp.  130-154. 
Natural  gas,  by  Joseph  D.  "Weeks,  pp.  155-179. 
Iron,  pp.  180-199. 
Twenty-one  years  of  progress  in  the  manufacture  of  iron  and  steel  in  the  United 
States,  by  James  M.  Swank,  pp.  180-195. 
Iron  in  the  Rocky  Mountain  division,  by  F.  F.  Chisolm,  p.  196. 
Iron  on  the  Pacific  coast,  by  C.  G.  Yale,  pp.  196-199. 
Gold  and  silver,  pp.  200-207. 
Copper.     The  copper  industry  of  the  United  States,  by  C.  Kirchhoff,  jr.,  pp. 
208-243. 
Lead.     The  lead  industry  of  the  United  States,  by  C.  Kirchhoff,  jr.,  pp.  244-271. 
Zinc.     The  zinc  industry  of  the  United  States,  by  C.  Kirchhoff,  jr.,  pp.  272-283. 
Quicksilver,  pp.  284-296. 
Nickel,  pp.  297-302. 
Manganese,  by  Jos.  D.  Weeks,  pp.  303-356. 
Chromium,  by  David  T.  Day,  pp.  357-360. 
Cobalt,  by  David  T.  Day,  pp.  361-365. 
Tungsten,  by  David  T.  Day,  p.  366. 
Platinum  and  iridium,  pp.  367-369. 
Tin,  pp.  370-385. 
Arsenic,  p.  386. 
Antimony,  pp.  387-388. 
Bismuth,  p.  389. 
Aluminum,  by  R.  L.  Packard,  pp.  390-392. 
Zirconium,  by  David  T.  Day,  pp.  393-394. 
Structural  materials,  by  H.  S.  Sproull,  pp.  395-427. 
Building  stone,  pp.  396-404. 
Building  sand,  pp.  404-405. 
Cement,  pp.  405-409. 
Lime,  pp.  410-413. 
Clays,  pp.  414-427. 
Abrasive  material,  pp.  428-436. 
Buhrstones,  p.  428. 
Grindstones,  pp.  428-429. 
Corundum,  pp.  429-432. 
Infusorial  earth,  p.  433. 
Pumice  stone,  p.  433. 
Novaculite,  by  George  M.  Turner,  pp.  433-436. 
Precious  stones,  by  George  F.  Kunz,  pp.  437-444. 
Fertilizers,  pp.  445-473. 
Phosphate  rock,  by  David  T.  Day,  pp.  445-455. 
Apatite,  pp.  455-458. 
Gypsum,  by  H.  S.  Sproull,  pp.  4oH-464. 
Marls,  p.  464. 
Manufactured  fertilizers,  pp.  465-473. 
Salt,  pp.  474-485. 
Bromine,  by  David  T.  Day,  pp.  486-487. 
