94  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Day  (David  T.)—  Continued. 
7.  Mineral  resources  of  the  United  States.     Calendar  year,  1900 — Continued. 
Asphaltum  and  bituminous  rocks,  by  Edward  W.  Parker,  pp.  653-660. 
Barytes,  by  Edward  W.  Parker,  pp.  891-892. 
Cement: 
American  rock  cement,  by  Uriah  Cummings,  pp.  745-746. 
Portland  cement,  by  Spencer  B.  Newberry,  pp.  737-744. 
Slag  cement  in  Alabama,  by  Edwin  C.  Eckel,  pp.  747-748. 
Chromite,  or  chromic  iron  ore,  pp.  897-898. 
Clay  products,  by  Jefferson  Middleton,  pp.  693-736. 
Coal,  by  Edward  W.  Parker,  pp.  273-457. 
Coke,  by  Edward  W.  Parker,  pp.  459-536. 
Copper,  by  Charles  Kirchhoff,  pp.  141-190. 
Flint  and  feldspar,  p.  895. 
Fluorspar,  by  Edward  W.  Parker,  pp.  857-859. 
Fuller's  earth,  pp.  893-894. 
Gold  and  silver,  by  George  E.  Roberts,  pp.  105-113. 
Graphite,  by  Joseph  Hyde  Pratt,  pp.  875-877. 
Gypsum,  by  Edward  W.  Parker,  pp.  827-833. 
Iron  ores,  by  John  Birkinbine,  pp.  39-67. 
Iron  and  steel  at  the  close  of  the  nineteenth  century,  by  James  M.  Swank,  pp.  69-104. 
Lead,  by  Charles  Kirchhoff,  pp.  191-211. 
Lithium,  pp.  239-243. 
Lithographic  stone,  by  S.  J.  Kubel,  pp.  869-873. 
Manganese  ores,  by  John  Birkinbine,  pp.  115-140. 
Mica,  by  Edward  W.  Parker,  pp.  849-856. 
Mineral  paints,  by  Edward  W.  Parker,  pp.  879-890. 
Mineral  waters,  by  A.  C.  Peale,  pp.  899-905. 
Natural  gas,  by  F.  H.  Oliphant,  pp.  629-651. 
Nickel  and  cobalt,  pp.  245-249. 
Petroleum,  by  F.  H.  Oliphant,  pp.  537-627. 
Phosphate  rock,  by  Edward  W.  Parker,  pp.  803-814. 
Platinum,  pp.  233-234. 
Precious  stones,  by  George  F.  Kunz,  pp.  749-778. 
Quicksilver,  pp.  235-238. 
Salt,  by  Edward  W.  Parker,  pp.  835-847. 
Stone,  pp.  661-692. 
Sulphur  and  pyrite,  by  Edward  W.  Parker,  pp.  815-826. 
Talc  and  soapstone,  by  Joseph  Hyde  Pratt,  pp.  779-786. 
Tin.    An  occurrence  of  stream  tin  in  the  York  region,  Alaska,  by  Alfred  H.  Brooks,  pp. 
267-271. 
Tungsten,  molybdenum,  uranium,  and  vanadium,  by  Joseph  Hyde  Pratt,  pp.  257-265. 
Zinc,  by  Charles  Kirchhoff,  pp.  213-227. 
8.  Mineral  resources  of  the  United  States.     Calendar  year  1901. 
U.  S.  Geol.  Surv.,  Min.  Res.  of  U.  S.  for  1901,  996  pp.,  1902. 
Contains: 
Abrasive  materials,  by  Joseph  Hyde  Pratt,  pp.  781-809. 
Aluminum  and  bauxite,  by  Joseph  Strainers,  pp.  225-229. 
Antimony,  by  Joseph  Struthers,  pp.  251-256. 
Arsenic,  by  Joseph  Struthers,  pp.  257-258. 
Asbestos,  by  Joseph  Hyde  Pratt,  pp.  887-895. 
Asphaltum  and  bituminous  rock,  by  Joseph  Struthers,  pp.  633-640. 
Barytes,  by  Joseph  Hyde  Pratt,  pp.  915-919 
Bismuth,  by  Joseph  Struthers,  pp.  259-260. 
Borax,  by  Joseph  Struthers,  pp.  869-872. 
Bromine,  by  Joseph  Struthers,  pp.  867-868. 
Cement,  pp.  721-728. 
Chromite  or  chromic  iron  ore,  by  Joseph  Hyde  Pratt,  pp.  941-948. 
Clay-working  industries,  by  Jefferson  Middleton,  pp.  671-720. 
Coal,  by  Edward  W.  Parker,  pp.  279-449. 
Coke,  by  Edward  W.  Parker,  pp.  451-523. 
Copper,  by  Charles  Kirchhoff,  pp.  157-198. 
Flint  and  feldspar,  by  Heinrich  Ries,  pp.  935-939. 
Fluorspar  and  cryolite,  by  Joseph  Hyde  Pratt,  pp.  879-885. 
Fuller's  earth,  pp.  921-934. 
Gold  and  silver,  by  George  E.  Roberts,  pp.  117-126. 
