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  ANNUAL 
  REPORT 
  SMITHSONIAN 
  INSTITUTION, 
  1943 
  

  

  they 
  have 
  a 
  feeling 
  of 
  pride 
  that 
  so 
  much 
  has 
  been 
  definitely 
  estab- 
  

   lished. 
  The 
  basic 
  principles 
  announced 
  a 
  half 
  century 
  ago 
  have 
  been 
  

   tested, 
  evaluated, 
  and 
  amplified 
  ; 
  the 
  work 
  of 
  the 
  fathers 
  was 
  so 
  well 
  

   done 
  that 
  little 
  has 
  been 
  discarded. 
  New 
  and 
  more 
  precise 
  laboratory 
  

   and 
  field 
  methods 
  have 
  made 
  possible 
  many 
  studies 
  which 
  could 
  not 
  

   have 
  been 
  carried 
  to 
  success 
  even 
  two 
  decades 
  ago. 
  Such 
  a 
  compilation 
  

   as 
  the 
  present 
  paper 
  would 
  not 
  be 
  possible 
  without 
  the 
  existence 
  of 
  a 
  

   wealth 
  of 
  data 
  which 
  have 
  resulted 
  from 
  an 
  immense 
  amount 
  of 
  

   investigation. 
  

  

  This 
  work 
  still 
  flourishes. 
  Each 
  unsolved 
  problem 
  challenges 
  the 
  

   attention 
  of 
  a 
  new 
  generation 
  of 
  investigators 
  with 
  fresh 
  minds 
  and 
  

   new 
  techniques. 
  Large 
  industrial 
  and 
  educational 
  units 
  are 
  facilitat- 
  

   ing 
  research 
  on 
  a 
  scale 
  far 
  beyond 
  the 
  capacity 
  of 
  the 
  individual 
  worker. 
  

   It 
  may 
  be 
  expected, 
  therefore, 
  that 
  the 
  rate 
  at 
  which 
  our 
  knowledge 
  

   of 
  petroleum 
  geology 
  has 
  advanced 
  will 
  be 
  accelerated 
  during 
  the 
  com- 
  

   ing 
  years. 
  The 
  writer 
  who, 
  50 
  years 
  hence, 
  may 
  be 
  called 
  upon 
  to 
  review 
  

   the 
  progress 
  of 
  a 
  century 
  of 
  petroleum 
  geology 
  will 
  find 
  that 
  many 
  of 
  

   the 
  baffling 
  uncertainties 
  of 
  our 
  time 
  will 
  have 
  been 
  cleared 
  away 
  ; 
  many 
  

   of 
  the 
  generalities 
  and 
  qualifications 
  that 
  characterize 
  this 
  paper 
  will 
  

   be 
  replaced 
  by 
  more 
  specific 
  knowledge. 
  Thrice 
  armed 
  though 
  they 
  

   may 
  be, 
  he 
  and 
  his 
  contemporaries 
  will 
  still 
  find 
  in 
  petroleum 
  geology 
  

   problems 
  worthy 
  of 
  their 
  steel. 
  

  

  WORKS 
  TO 
  WHICH 
  REFERENCE 
  IS 
  MADE 
  

  

  In 
  the 
  following 
  list 
  are 
  included 
  the 
  publications 
  referred 
  to 
  in 
  this 
  paper. 
  

   While 
  it 
  comprises 
  only 
  a 
  small 
  part 
  of 
  the 
  literature 
  on 
  petroleum 
  geology, 
  refer- 
  

   ence 
  has 
  been 
  made 
  to 
  the 
  more 
  important 
  publications 
  in 
  which 
  the 
  principles 
  of 
  

   petroleum 
  geology 
  are 
  discussed. 
  It 
  will 
  therefore 
  to 
  some 
  extent 
  serve 
  as 
  a 
  guide 
  

   to 
  those 
  who 
  may 
  be 
  interested 
  in 
  more 
  detailed 
  consideration 
  of 
  this 
  subject. 
  

  

  Adams, 
  John 
  Emeey. 
  

  

  1934. 
  Origin, 
  migration 
  and 
  accumulation 
  of 
  petroleum 
  in 
  limestone 
  reser- 
  

   voirs 
  in 
  the 
  western 
  United 
  States 
  and 
  Canada, 
  in 
  Problems 
  of 
  

   petroleum 
  geology. 
  Amer. 
  Assoc. 
  Petrol. 
  Geol., 
  Sidney 
  Powers 
  Mem. 
  

   vol., 
  pp. 
  347-363. 
  

  

  ASHBUBNEB, 
  ChAELES 
  A. 
  

  

  1885. 
  The 
  geology 
  of 
  natural 
  gas. 
  Science, 
  vol. 
  6, 
  pp. 
  42-43. 
  

   Athy, 
  L. 
  F. 
  

  

  1930a. 
  Density, 
  porosity, 
  and 
  compaction 
  of 
  sedimentary 
  rocks. 
  Amer. 
  

  

  Assoc. 
  Petrol. 
  Geol., 
  Bull., 
  vol. 
  14, 
  No. 
  1, 
  pp. 
  1-24. 
  

   1930b. 
  Compaction 
  and 
  oil 
  migration. 
  Amer. 
  Assoc. 
  Petrol. 
  Geol., 
  Bull., 
  

   vol. 
  14, 
  No. 
  1, 
  pp. 
  25-35. 
  

   Atwhx, 
  E. 
  R. 
  

  

  1940. 
  Significant 
  developments 
  in 
  California, 
  1939. 
  Amer. 
  Assoc. 
  Petrol. 
  

   Geol., 
  Bull., 
  vol. 
  24, 
  No. 
  6, 
  pp. 
  1112-1125, 
  fig. 
  3. 
  

   Babton, 
  Donald 
  C. 
  

  

  1934. 
  Natural 
  history 
  of 
  the 
  Gulf 
  Coast 
  crude 
  oil, 
  in 
  Problems 
  of 
  petroleum* 
  

   geology. 
  Amer. 
  Assoc. 
  Petrol. 
  Geol., 
  Sidney 
  Powers 
  Mem. 
  vol., 
  pp. 
  

   109-155. 
  

  

  