﻿Geology 
  and 
  Natural 
  History. 
  81 
  

  

  economic 
  lines, 
  since 
  the 
  establishment 
  of 
  the 
  first 
  Survey. 
  The 
  

   publications, 
  however, 
  have 
  been 
  of 
  limited 
  use 
  to 
  teachers, 
  

   students, 
  and 
  general 
  readers 
  because 
  of 
  their 
  technical 
  character. 
  

   The 
  present 
  volume 
  is 
  designed 
  for 
  students 
  in 
  colleges 
  and 
  

   teachers 
  in 
  schools 
  and 
  admirably 
  fulfils 
  its 
  purpose. 
  The 
  physio- 
  

   graphic 
  treatment 
  in 
  particular 
  is 
  adapted 
  to 
  serve 
  as 
  a 
  textbook 
  

   in 
  itself. 
  It 
  is 
  to 
  be 
  hoped 
  that 
  more 
  volumes 
  of 
  this 
  character 
  

   Trill 
  be 
  forthcoming. 
  h. 
  e. 
  g. 
  

  

  11. 
  State 
  Geological 
  Survey 
  of 
  Wyoming, 
  Bulletin 
  3, 
  Series 
  B, 
  

   The 
  Douglas 
  Oil 
  Field, 
  Converse 
  County 
  ; 
  The 
  Muddy 
  Creek 
  

   Oil 
  Field, 
  Carbon 
  County, 
  by 
  C. 
  E. 
  Jamison, 
  State 
  Geologist. 
  

   Pp. 
  50, 
  pis. 
  i-viii. 
  Cheyenne, 
  1912. 
  — 
  In 
  the 
  Douglas 
  anticline, 
  

   the 
  exposed 
  beds 
  exhibit 
  a 
  stratigraphic 
  sequence 
  from 
  pre- 
  

   Cambrian 
  to 
  Quaternary. 
  Oil 
  occurs 
  in 
  the 
  Lower 
  Cretaceous 
  

   and 
  most 
  of 
  the 
  seventy-one 
  wells 
  sunk 
  in 
  this 
  field 
  report 
  " 
  small 
  

   amount 
  of 
  oil." 
  In 
  the 
  Muddy 
  Creek 
  field 
  oil-saturated 
  sand- 
  

   stone 
  (lower 
  part 
  of 
  Wasatch 
  formation) 
  overlies 
  unconformably 
  

   3200-3400 
  feet 
  of 
  Fort 
  Union 
  sandstones 
  and 
  shales 
  containing 
  

   numerous 
  beds 
  of 
  coal. 
  h. 
  e. 
  g. 
  

  

  12. 
  Coal, 
  and 
  the 
  Prevention 
  of 
  Explosions 
  and 
  Fires 
  in 
  

   Mines; 
  by 
  John 
  Harger. 
  Pp.183. 
  London, 
  1913 
  (Longmans, 
  

   Green 
  & 
  Co.). 
  — 
  The 
  character 
  of 
  this 
  admirably 
  written 
  volume 
  

   and 
  its 
  evident 
  field 
  of 
  usefulness 
  is 
  sufficiently 
  indicated 
  by 
  its 
  

   contents. 
  The 
  principal 
  chapters 
  deal 
  with 
  : 
  Combustion, 
  respira- 
  

   tion, 
  mechanism 
  of 
  explosions, 
  the 
  rdle 
  of 
  dust 
  in 
  explosions, 
  

   prevention 
  of 
  explosions, 
  gob 
  fires 
  — 
  their 
  phenomena- 
  and 
  treat- 
  

   ment. 
  H. 
  E. 
  G. 
  

  

  13. 
  New 
  Zealand 
  Department 
  of 
  Mines, 
  Geological 
  Survey 
  

   Branch; 
  P. 
  G. 
  Morgan, 
  Director. 
  Bulletin 
  No. 
  15 
  (New 
  

   Series), 
  The 
  Geology 
  of 
  the 
  Waihi-Tairua 
  Subdivision. 
  Hauraki 
  

   Division 
  / 
  by 
  James 
  Mackintosh 
  Bell 
  and 
  Colin 
  Fraser. 
  

   Pp. 
  192, 
  pis. 
  i-x, 
  10 
  diagrams, 
  18 
  maps 
  and 
  sections. 
  Welling- 
  

   ton, 
  1912. 
  — 
  The 
  publication 
  of 
  maps 
  and 
  descriptions 
  of 
  the 
  

   Waihi-Tairua 
  subdivision 
  completes 
  the 
  geological 
  survey 
  of 
  the 
  

   Hauraki 
  peninsula, 
  — 
  an 
  area 
  prevailingly 
  volcanic. 
  No 
  sedi- 
  

   mentary 
  formations 
  occur 
  in 
  the 
  region 
  under 
  discussion, 
  the 
  suc- 
  

   cession 
  being 
  : 
  Eocene 
  (?), 
  andesitic 
  and 
  dacitic 
  lavas 
  and 
  

   breccias 
  ; 
  Miocene, 
  similar 
  to 
  Eocene 
  ; 
  Pliocene, 
  rhyolitic 
  and 
  

   dacitic 
  tuffs, 
  breccias, 
  agglomerates 
  and 
  flows. 
  Dikes 
  of 
  andes- 
  

   ite, 
  dacite 
  and 
  rhyolite 
  of 
  post-Pliocene 
  and 
  earlier 
  dates 
  traverse 
  

   the 
  rock 
  complex. 
  Mineralization 
  through 
  hydrothermal 
  action 
  

   is 
  especially 
  pronounced 
  in 
  the 
  Eocene 
  and 
  Miocene 
  rocks. 
  At- 
  

   tention 
  is 
  called 
  to 
  the 
  similarity 
  in 
  origin 
  and 
  occurrence 
  

   between 
  the 
  gold 
  deposits 
  of 
  Hauraki 
  and 
  those 
  of 
  Washoe, 
  

   Cripple 
  Creek, 
  Tonopah, 
  etc., 
  in 
  the 
  United 
  States. 
  Detailed 
  dis- 
  

   cussion 
  of 
  mines 
  and 
  prospects, 
  illustrated 
  by 
  analyses 
  and 
  maps, 
  

   constitutes 
  the 
  major 
  part 
  of 
  the 
  report. 
  The 
  region 
  has 
  pro- 
  

   duced 
  over 
  850,000,000 
  worth 
  of 
  gold 
  and 
  silver 
  bullion 
  from 
  

   quartz 
  veins. 
  h. 
  e. 
  g. 
  

  

  Ax. 
  Jour. 
  Sci.— 
  Fourth 
  Series, 
  Vol. 
  XXXVI, 
  Xo. 
  211.— 
  July, 
  1913. 
  

   6 
  

  

  