﻿422 
  Scientific 
  Intelligence. 
  

  

  brian 
  rocks 
  with 
  beds 
  of 
  iron 
  ore. 
  In 
  this 
  region 
  it 
  was 
  found 
  

   " 
  that 
  the 
  rock-striations 
  indicated 
  a 
  flow 
  of 
  ice, 
  during 
  the 
  

   glacial 
  period, 
  from 
  the 
  vicinity 
  of 
  the 
  present 
  water-shed, 
  both 
  

   to 
  the 
  westward 
  and 
  to 
  the 
  eastward, 
  nearly 
  in 
  conformity 
  with 
  

   the 
  general 
  slope 
  of 
  the 
  surface." 
  

  

  The 
  boring 
  for 
  petroleum 
  at 
  Athabasca 
  landing, 
  Alberta, 
  was 
  

   carried 
  down 
  to 
  a 
  depth 
  of 
  1770 
  feet 
  with 
  great 
  difficulty, 
  and 
  at 
  

   last 
  the 
  work 
  was 
  stopped 
  by 
  the 
  caving 
  in 
  of 
  the 
  soft 
  shales 
  so 
  

   as 
  to 
  make 
  further 
  penetration 
  impossible 
  with 
  the 
  tools 
  at 
  hand. 
  

   The 
  zone 
  of 
  so-called 
  "tar 
  sands 
  " 
  at 
  the 
  bottom 
  of 
  the 
  Cretaceous 
  

   had 
  not 
  been 
  reached. 
  The 
  Director 
  remarks 
  that 
  the 
  work 
  so 
  

   far 
  accomplished 
  " 
  has 
  not 
  in 
  the 
  least 
  degree 
  tended 
  to 
  render 
  

   the 
  existence 
  of 
  petroleum 
  even 
  at 
  Athabasca 
  landing, 
  more 
  

   doubtful 
  than 
  before." 
  (p. 
  14.) 
  

  

  Mr. 
  Chalmers 
  reports 
  two 
  glacial 
  clays 
  in 
  the 
  St. 
  Lawrence 
  

   valley 
  region, 
  and 
  has 
  observed 
  " 
  a 
  series 
  of 
  three 
  shore-lines 
  on 
  

   the 
  south 
  side 
  of 
  the 
  St. 
  Lawrence, 
  facing 
  the 
  open 
  St. 
  Lawrence 
  

   valley 
  intermittently 
  extending 
  from 
  the 
  Gulf 
  to 
  the 
  international 
  

   boundary 
  in 
  the 
  vicinity 
  of 
  Lake 
  Champlain, 
  at 
  heights 
  of 
  600 
  to 
  

   625 
  feet, 
  700 
  to 
  720 
  feet, 
  and 
  875 
  to 
  885 
  feet 
  (aneroid 
  measure- 
  

   ments). 
  These 
  shore 
  lines 
  are 
  believed 
  to 
  be 
  marine 
  and 
  to 
  indi- 
  

   cate 
  margins 
  of 
  the 
  sea 
  in 
  the 
  St. 
  Lawrence 
  valley 
  in 
  the 
  Pleis- 
  

   tocene 
  period, 
  (p. 
  82.) 
  

  

  In 
  Mr. 
  Chambers' 
  report 
  we 
  notice 
  also 
  the 
  following 
  interest- 
  

   ing 
  fact 
  : 
  — 
  "Dislocations 
  or 
  slips 
  of 
  the 
  slates 
  over 
  each 
  other, 
  

   along 
  certain 
  zones 
  or 
  bands, 
  since 
  the 
  glacial 
  period, 
  were 
  

   observed 
  in 
  a 
  great 
  number 
  of 
  places, 
  the 
  displacements 
  ranging 
  

   in 
  extent 
  from 
  two 
  or 
  three 
  inches 
  to 
  five 
  or 
  six 
  feet. 
  One 
  of 
  the 
  

   most 
  remarkable 
  examples 
  of 
  these 
  movements 
  in 
  the 
  rocks, 
  was 
  

   seen 
  in 
  the 
  southern 
  part 
  of 
  the 
  seigniory 
  of 
  Aubert 
  Gallion, 
  

   Beaver 
  County, 
  where 
  a 
  band 
  of 
  slates 
  from 
  three 
  to 
  four 
  feet 
  

   thick 
  and 
  several 
  hundred 
  vards 
  in 
  length 
  had 
  sustained 
  an 
  

   upward 
  shore 
  of 
  nearly 
  six 
  feet 
  above 
  the 
  general 
  level 
  of 
  the 
  

   glaciated 
  rock-surface, 
  as 
  evidenced 
  by 
  the 
  parallel 
  and 
  well- 
  

   marked 
  stride." 
  (p. 
  83.) 
  This 
  recalls 
  similar 
  phenomena 
  recorded 
  

   by 
  G. 
  F. 
  Matthew 
  in 
  the 
  suburbs 
  of 
  St. 
  Johns, 
  New 
  Brunswick. 
  

  

  h. 
  s. 
  w. 
  

  

  2. 
  Boletbi 
  del 
  Institute* 
  Geologico 
  de 
  Mexico 
  — 
  Nums. 
  4, 
  5 
  y 
  6. 
  

   Bosquejo 
  Geologico 
  de 
  Mexico 
  / 
  by 
  Director 
  Jose 
  G. 
  Aguilera. 
  

   pp. 
  1-272, 
  plates 
  i-v, 
  1897. 
  — 
  This 
  volume 
  contains 
  detailed 
  reports 
  

   of 
  reconnoissance 
  surveys 
  (itinerarios 
  geologicos) 
  of 
  the 
  country 
  

   by 
  several 
  members 
  of 
  the 
  survey 
  staff 
  and 
  a 
  second 
  part 
  by 
  the 
  

   director 
  presenting 
  the 
  classification 
  of 
  the 
  formations 
  with 
  lists 
  

   of 
  fossils 
  and 
  descriptions 
  of 
  the 
  rocks 
  comprising 
  them. 
  A 
  brief 
  

   obituary 
  notice 
  of 
  Ingeniero 
  Antonio 
  del 
  Castillo, 
  the 
  founder 
  

   and 
  first 
  director 
  of 
  the 
  Instituto 
  Geologico 
  de 
  Mexico, 
  is 
  inserted 
  

   at 
  the 
  beginning 
  of 
  the 
  volume. 
  h. 
  s. 
  w. 
  

  

  3. 
  An 
  introduction 
  to 
  Geology 
  ; 
  by 
  William 
  B. 
  Scott, 
  pp. 
  

   1-563, 
  figs. 
  1-169, 
  plates 
  i-xii. 
  New 
  York, 
  1897. 
  (The 
  MacmiUan 
  

   Co.) 
  — 
  Professor 
  Scott 
  has 
  supplied 
  a 
  much 
  felt 
  need, 
  in 
  giving 
  

  

  