﻿164 
  Scientific 
  Intelligence. 
  

  

  Yellowstone 
  Park, 
  and 
  others, 
  besides 
  very 
  large 
  additions 
  to 
  the 
  

   figures 
  of 
  fossils. 
  

  

  This 
  edition 
  is 
  issued 
  thirty-two 
  years 
  after 
  the 
  first, 
  twenty- 
  

   one 
  after 
  the 
  second, 
  and 
  fifteen 
  after 
  the 
  third. 
  In 
  the 
  prepara- 
  

   tion 
  of 
  the 
  third, 
  the 
  Historical 
  Geology 
  was 
  only 
  partly 
  revised. 
  

  

  4. 
  Manual 
  of 
  the 
  Geology 
  of 
  India, 
  chiefly 
  compiled 
  from 
  the 
  

   observations 
  of 
  the 
  Geological 
  Survey, 
  by 
  H. 
  B. 
  Medlicott 
  and 
  

   W. 
  T. 
  Blanfokd. 
  — 
  Stratigraphical 
  and 
  Structural 
  Geology. 
  

   Second 
  edition, 
  revised 
  and 
  largely 
  rewritten 
  by 
  R. 
  D. 
  Oldham, 
  

   Superintendent 
  Geological 
  Survey 
  of 
  India. 
  543 
  pp. 
  large 
  8vo. 
  

   with 
  maps, 
  plates 
  and 
  illustrations 
  in 
  the 
  text, 
  Calcutta, 
  1893. 
  — 
  

   This 
  new 
  edition 
  of 
  the 
  Manual 
  of 
  the 
  Geology 
  of 
  India 
  appears 
  

   in 
  a 
  single 
  volume. 
  While 
  the 
  size 
  of 
  the 
  Manual 
  has 
  been 
  reduced 
  

   by 
  omission 
  of 
  less 
  important 
  parts 
  and 
  by 
  condensations, 
  the 
  

   latest 
  results 
  of 
  the 
  survey 
  of 
  India 
  have 
  been 
  incorporated, 
  and 
  

   a 
  new 
  colored 
  geological 
  map 
  of 
  the 
  country 
  is 
  among 
  its 
  illustra- 
  

   tions. 
  The 
  many 
  peculiarities 
  in 
  the 
  geological 
  structure 
  and 
  

   orographic 
  history 
  of 
  India 
  make 
  the 
  study 
  of 
  the 
  work 
  of 
  great 
  

   importance 
  to 
  the 
  geologists 
  of 
  other 
  lands 
  and 
  especially 
  to 
  those 
  

   of 
  America. 
  The 
  addition 
  of 
  20,000 
  feet 
  to 
  the 
  height 
  of 
  the 
  

   Himalayas 
  after 
  the 
  Miocene 
  period 
  was 
  a 
  marvelous 
  event 
  in 
  geo- 
  

   logical 
  history 
  ; 
  and 
  the 
  great 
  fault-plane 
  of 
  a 
  reversed 
  (or 
  up 
  

   thrust) 
  fault, 
  " 
  along 
  the 
  whole 
  length 
  of 
  the 
  Himalayas," 
  against 
  

   which 
  the 
  fresh 
  water 
  Siwalik 
  beds 
  of 
  the 
  Pliocene 
  were 
  deposited 
  

   to 
  a 
  thickness 
  of 
  several 
  thousand 
  feet 
  (now 
  constituting 
  the 
  

   Subhimalayas) 
  and 
  other 
  related 
  facts, 
  present 
  orographic 
  prob- 
  

   lems 
  of 
  profound 
  interest. 
  (On 
  the 
  colored 
  map, 
  a 
  narrow 
  

   yellow 
  band, 
  extending 
  along 
  the 
  north 
  margin 
  of 
  the 
  great 
  allu- 
  

   vial 
  plain 
  of 
  the 
  Ganges 
  and 
  the 
  south 
  margin 
  of 
  the 
  mountains 
  

   indicates 
  the 
  position 
  of 
  the 
  Siwalik 
  Hills.) 
  It 
  adds 
  to 
  that 
  

   interest 
  that 
  while 
  these 
  great 
  changes 
  were 
  in 
  progress 
  in 
  

   the 
  mountain 
  region, 
  Peninsular 
  India, 
  the 
  lower 
  region, 
  from 
  

   500 
  to 
  over 
  1000 
  miles 
  in 
  width, 
  lying 
  between 
  the 
  Himalayas 
  and 
  

   the 
  Indian 
  Ocean, 
  underwent 
  little 
  change. 
  " 
  The 
  only 
  prominent 
  

   event 
  which 
  can 
  be 
  attributed 
  to 
  this 
  period 
  is 
  the 
  origin 
  of 
  the 
  

   western 
  Ghats." 
  

  

  5. 
  Recurrence 
  of 
  Ice- 
  Ages. 
  — 
  Prof. 
  T. 
  McK. 
  Hughes, 
  of 
  Cam- 
  

   bridge, 
  England, 
  in 
  a 
  paper 
  read 
  before 
  the 
  Cambridge 
  Philo- 
  

   sophical 
  Society 
  (Proc. 
  Phil. 
  Soc. 
  1893-94, 
  72. 
  98) 
  entitled 
  

   " 
  Criticism 
  of 
  the 
  Geological 
  evidence 
  for 
  the 
  recurrence 
  of 
  Ice- 
  

   Ages," 
  makes 
  the 
  following 
  statements 
  in 
  the 
  course 
  of 
  his 
  con- 
  

   cluding 
  remarks. 
  " 
  I 
  have 
  criticised 
  the 
  principal 
  cases 
  in 
  which 
  

   it 
  has 
  been 
  contended 
  that 
  we 
  have 
  evidence 
  of 
  glacial 
  action 
  in 
  

   ancient 
  bowlder 
  deposits, 
  and 
  have 
  shown, 
  by 
  reference 
  to 
  actual 
  

   specimens 
  of 
  the 
  rocks 
  in 
  question, 
  that, 
  not 
  only 
  is 
  the 
  evidence 
  

   of 
  Paleozoic 
  or 
  Mesozoic 
  glaciation 
  in 
  Britain 
  inconclusive, 
  but 
  

   that 
  the 
  negative 
  can 
  be 
  proved 
  in 
  all 
  cases 
  hitherto 
  adduced. 
  

  

  Being 
  thus 
  warned 
  against 
  taking 
  on 
  trust 
  evidence 
  for 
  glacial 
  

   action 
  in 
  ancient 
  times 
  rounded 
  upon 
  the 
  form 
  or 
  the 
  condition 
  of 
  

   the 
  surface 
  of 
  the 
  rock, 
  I 
  venture 
  to 
  throw 
  doubts 
  on 
  the 
  infer- 
  

  

  