﻿Geology 
  and 
  Mineralogy. 
  141 
  

  

  of 
  the 
  Survey 
  a 
  large 
  amount 
  of 
  new 
  geological 
  work 
  was 
  done. 
  

   Geological 
  studies 
  were 
  carried 
  into 
  every 
  State 
  and 
  Alaska. 
  

   During 
  the 
  year 
  the 
  division 
  of 
  chemistry 
  and 
  physics 
  made 
  

   1014 
  analyses 
  of 
  rocks, 
  minerals, 
  and 
  water; 
  investigated 
  

   isotropic 
  lead; 
  made 
  studies 
  of 
  capillarity 
  and 
  deep 
  tempera- 
  

   tures; 
  and 
  conducted 
  experiments 
  in 
  the 
  extraction 
  of 
  potash. 
  

   The 
  Water 
  Eesources 
  Branch 
  was 
  unusually 
  busy 
  with 
  problems 
  

   relating 
  to 
  water 
  supplies 
  and 
  water 
  power 
  and 
  with 
  the 
  loca- 
  

   tion 
  of 
  stock 
  raising 
  homesteads. 
  The 
  land-classification 
  board 
  

   reported 
  on 
  9,972,256 
  acres 
  including 
  coal 
  lands, 
  oil 
  reserves, 
  

   phosphate 
  reserves, 
  power 
  sites, 
  non-irrigable 
  lands, 
  public 
  water 
  

   reserves, 
  etc. 
  The 
  publications 
  for 
  the 
  year 
  number 
  229 
  and 
  

   include 
  6 
  professional 
  papers, 
  14 
  bulletins, 
  17 
  water-supply 
  

   papers. 
  h. 
  e. 
  g. 
  

  

  2. 
  Publications 
  of 
  the 
  TJ. 
  S. 
  Geological 
  Survey; 
  George 
  Otis 
  

   Smith, 
  Director. 
  — 
  Recent 
  publications 
  of 
  the 
  Survey 
  are 
  noted 
  

   below. 
  See 
  earlier 
  vol. 
  45, 
  pp. 
  475, 
  476, 
  June, 
  1918. 
  — 
  

  

  Thirty-ninth 
  annual 
  report 
  of 
  the 
  Director, 
  noticed 
  above. 
  

  

  Topographic 
  Atlas. 
  — 
  Seventy-nine 
  sheets. 
  

  

  Professional 
  Papers. 
  — 
  No. 
  101. 
  Geology 
  and 
  paleontology 
  

   of 
  the 
  Raton 
  Mesa 
  and 
  other 
  regions 
  in 
  Colorado 
  and 
  New 
  

   Mexico 
  ; 
  papers 
  by 
  W. 
  T. 
  Lee 
  and 
  F. 
  H. 
  Knowlton. 
  Pp. 
  450 
  ; 
  

   103 
  pis., 
  16 
  figs. 
  Noticed 
  later. 
  

  

  No. 
  106. 
  Quaternary 
  geology 
  of 
  southeastern 
  Wisconsin; 
  by 
  

   W. 
  C. 
  Alden. 
  Pp. 
  356 
  ; 
  25 
  pis., 
  2 
  figs. 
  Noticed 
  later. 
  

  

  Nos. 
  108, 
  120. 
  Shorter 
  contributions 
  to 
  general 
  geologv. 
  

   No. 
  108, 
  1917. 
  Part 
  L. 
  No. 
  120, 
  1918. 
  Parts 
  A, 
  B, 
  C, 
  D, 
  E, 
  

   G, 
  H. 
  

  

  Mineral 
  Resources 
  of 
  the 
  United 
  States, 
  1916 
  and 
  1917. 
  

   Numerous 
  advance 
  chapters. 
  

  

  Bulletins. 
  — 
  No. 
  655. 
  The 
  Lake 
  Clark-Central 
  Kuskokwim 
  

   region, 
  Alaska; 
  by 
  P. 
  S. 
  Smith. 
  Pp. 
  176; 
  12 
  pis., 
  6 
  figs. 
  

  

  No. 
  662. 
  Mineral 
  resources 
  of 
  Alaska, 
  1916 
  ; 
  bv 
  A. 
  H. 
  Brooks 
  

   and 
  others. 
  Pp. 
  484 
  ; 
  18 
  pis., 
  8 
  figs. 
  

  

  No. 
  663. 
  The 
  structural 
  and 
  ornamental 
  stones 
  of 
  Minnesota 
  ; 
  

   by 
  Oliver 
  Bowles. 
  Pp. 
  240 
  ; 
  21 
  pis., 
  27 
  figs. 
  

  

  No. 
  667. 
  The 
  Cosna-Nowitna 
  region, 
  Alaska; 
  by 
  H. 
  M. 
  

   Eakin. 
  Pp. 
  64 
  ; 
  8 
  pis., 
  3 
  figs. 
  

  

  No. 
  670. 
  The 
  Salk 
  Creek 
  oil 
  field, 
  Wyoming; 
  by 
  C. 
  H. 
  Wege- 
  

  

  MANN. 
  Pp. 
  52 
  ; 
  7 
  pis., 
  2 
  figS. 
  

  

  Nos. 
  671, 
  672, 
  673, 
  674. 
  Spirit 
  leveling; 
  R. 
  B. 
  Marshall, 
  

   Chief 
  Geographer. 
  No. 
  671, 
  New 
  York, 
  1896-1905, 
  1912-1916. 
  

   No. 
  672, 
  Illinois, 
  1914-1917. 
  No. 
  673, 
  Kentucky, 
  1914-1916. 
  

   No. 
  674, 
  State 
  of 
  Washington, 
  1896-1917. 
  The 
  respective 
  

   States 
  have 
  cooperated 
  in 
  each 
  case. 
  

  

  No. 
  675. 
  The 
  Upper 
  Chitina 
  Valley, 
  Alaska; 
  by 
  F. 
  H. 
  

   Moffit 
  ; 
  with 
  a 
  description 
  of 
  the 
  igneous 
  rocks 
  ; 
  by 
  R. 
  M. 
  Over- 
  

   beck. 
  Pp. 
  82 
  ; 
  13 
  pis., 
  2 
  figs. 
  

  

  No. 
  684. 
  Bibliography 
  of 
  North 
  American 
  geology 
  for 
  1917, 
  

   with 
  subject 
  index 
  ; 
  by 
  John 
  M. 
  Nickles. 
  Pp. 
  154. 
  

  

  