﻿154 
  Scientific 
  Intelligence. 
  

  

  an 
  increase 
  of 
  a 
  thousand 
  over 
  the 
  year 
  preceding. 
  One 
  of 
  the 
  

   lines 
  of 
  war 
  work 
  most 
  noteworthy 
  was 
  the 
  recovery, 
  on 
  a 
  com- 
  

   mercial 
  scale, 
  of 
  the 
  rare 
  gas 
  helium 
  from 
  natural 
  gas, 
  The 
  

   three 
  plants 
  were 
  located 
  in 
  the 
  Petrolia 
  Field 
  near 
  Fort 
  Worth, 
  

   Texas. 
  It 
  is 
  stated 
  that 
  about 
  150,000 
  cubic 
  feet 
  of 
  the 
  gas 
  in 
  

   steel 
  cylinders 
  were 
  on 
  the 
  dock 
  at 
  New 
  Orleans 
  awaiting 
  ship- 
  

   ment 
  to 
  France 
  when 
  the 
  armistice 
  was 
  signed. 
  The 
  Bureau 
  has 
  

   published 
  22 
  bulletins 
  in 
  the 
  past 
  year 
  ; 
  33 
  technical 
  papers 
  ; 
  1 
  

   miners' 
  circular, 
  and 
  17 
  other 
  publications. 
  The 
  titles 
  of 
  the 
  

   bulletins 
  not 
  previously 
  noted 
  are 
  given 
  in 
  the 
  following 
  list 
  : 
  

  

  Bulletins. 
  — 
  No. 
  144. 
  Eeport 
  of 
  a 
  Joint 
  Committee 
  appointed 
  from 
  the 
  

   Bureau 
  of 
  Mines 
  and 
  the 
  U. 
  S. 
  Geological 
  Survey 
  by 
  the 
  Secretary 
  of 
  the 
  

   Interior 
  to 
  study 
  the 
  gold 
  situation, 
  October 
  30, 
  1918. 
  Pp. 
  84, 
  1 
  pi., 
  3 
  figs. 
  

  

  No. 
  150. 
  Electrodeposition 
  of 
  gold 
  and 
  silver 
  from 
  cyanide 
  solution; 
  

   by 
  S. 
  B. 
  Christy. 
  Pp. 
  171, 
  8 
  pis., 
  41 
  figs. 
  

  

  No. 
  154. 
  Mining 
  and 
  milling 
  of 
  lead 
  and 
  zinc 
  ores 
  in 
  the 
  Missouri- 
  

   Kansas-Oklahoma 
  Zinc 
  district; 
  by 
  C. 
  A. 
  Weight 
  and 
  H. 
  A. 
  Buehler. 
  

   Pp. 
  134, 
  17 
  pis., 
  13 
  figs. 
  

  

  No. 
  62. 
  Kemoval 
  of 
  the 
  lighter 
  hydrocarbons 
  from 
  petroleum 
  by 
  con- 
  

   tinuous 
  distillation, 
  with 
  especial 
  reference 
  to 
  plants 
  in 
  California; 
  by 
  

   J. 
  M. 
  Wadswokth. 
  Pp. 
  162, 
  50 
  pis., 
  45 
  figs. 
  

  

  No. 
  165. 
  Bibliography 
  of 
  petroleum 
  and 
  allied 
  substances 
  in 
  1916; 
  by 
  

   E. 
  H. 
  Burroughs. 
  Pp. 
  159. 
  

  

  No. 
  166. 
  A 
  preliminary 
  report 
  on 
  the 
  mining 
  districts 
  of 
  Idaho; 
  by 
  

   T. 
  Varley, 
  C. 
  A. 
  Wright, 
  E. 
  K. 
  Soper, 
  and 
  I). 
  C. 
  Livingston. 
  Pp. 
  113, 
  

   3 
  pis., 
  3 
  figs. 
  

  

  No. 
  168. 
  Eecovery 
  of 
  zinc 
  from 
  low-grade 
  and 
  complex 
  ores; 
  by 
  D. 
  A. 
  

   Lyon 
  and 
  O. 
  C. 
  Ealston. 
  Pp. 
  145, 
  23 
  figs. 
  

  

  No. 
  169. 
  Illinois 
  mining 
  statutes 
  annotated; 
  by 
  J. 
  W. 
  Thompson. 
  

   Pp. 
  594. 
  

  

  No. 
  170. 
  Extinguishing 
  and 
  preventing 
  oil 
  and 
  gas 
  fires; 
  by 
  C. 
  P. 
  

   Bowie. 
  Pp. 
  50, 
  19 
  pis., 
  4 
  figs. 
  

  

  No. 
  172. 
  Abstracts 
  of 
  current 
  decisions 
  on 
  mines 
  and 
  mining, 
  January 
  

   to 
  May, 
  1918. 
  Pp. 
  160. 
  No. 
  174, 
  the 
  same, 
  May 
  to 
  September, 
  1918: 
  bv 
  

   J. 
  W. 
  Thompson. 
  Pp. 
  138. 
  

  

  No. 
  175. 
  Experiment 
  stations 
  of 
  the 
  Bureau 
  of 
  Mines; 
  by 
  Van. 
  H. 
  

   Manning. 
  Pp. 
  106, 
  29 
  pis., 
  2 
  figs. 
  

  

  No. 
  176. 
  Eecent 
  developments 
  in 
  the 
  absorption 
  process 
  for 
  recovering 
  

   gasoline 
  from 
  natural 
  gas; 
  by 
  W. 
  P. 
  Dykema. 
  Pp. 
  90, 
  20 
  pis., 
  30 
  figs. 
  

  

  No. 
  177. 
  The 
  decline 
  and 
  ultimate 
  production 
  of 
  oil 
  wells, 
  with 
  notes 
  

   on 
  the 
  valuation 
  of 
  oil 
  properties; 
  by 
  C. 
  H. 
  Beal. 
  Pp. 
  215, 
  4 
  pis., 
  80 
  figs. 
  

  

  No. 
  178. 
  War 
  gas 
  investigations 
  of 
  the 
  Bureau 
  of 
  Mines; 
  by 
  Van. 
  H. 
  

   Manning; 
  issued 
  in 
  four 
  parts, 
  including: 
  War 
  gas 
  investigations; 
  war 
  

   minerals, 
  nitrogen 
  fixation, 
  and 
  sodium 
  cyanide; 
  petroleum 
  investigations, 
  

   and 
  production 
  of 
  helium; 
  explosives 
  and 
  miscellaneous 
  investigations. 
  

  

  No. 
  179. 
  Abstracts 
  of 
  current 
  decisions 
  on 
  mines 
  and 
  mining, 
  Septem- 
  

   ber 
  to 
  December, 
  1918; 
  by 
  J. 
  W. 
  Thompson. 
  Pp. 
  166. 
  

  

  No. 
  181. 
  Abstracts 
  of 
  current 
  decisions 
  on 
  mines 
  and 
  mining, 
  reported 
  

   from 
  January 
  to 
  May, 
  1919; 
  by 
  J. 
  W. 
  Thompson. 
  Pp. 
  176. 
  

  

  III. 
  Miscellaneous 
  Scientific 
  Intelligence. 
  

  

  1. 
  Report 
  of 
  the 
  Secretary 
  of 
  the 
  Smithsonian 
  Institution, 
  

   Charles 
  D. 
  Walcott, 
  for 
  the 
  year 
  ending 
  June 
  30, 
  1919.— 
  The 
  

   year 
  covered 
  by 
  this 
  report 
  embraces 
  a 
  considerable 
  period 
  of 
  

  

  