﻿PREFACE. 
  Vll 
  

  

  Blanford 
  (supra, 
  Vol. 
  VI, 
  part 
  3), 
  this 
  Nim&r-sandstone 
  

   (excepting 
  only 
  the 
  oyster-bed 
  at 
  top) 
  was 
  included 
  with 
  the 
  

   rock 
  described 
  by 
  Mr. 
  Bose 
  as 
  Gondwana 
  sandstone, 
  both 
  being 
  

   classed 
  with 
  the 
  Bag-beds 
  as 
  cretaceous. 
  The 
  probabilities 
  

   aforesaid 
  were 
  not 
  then 
  in 
  view. 
  In 
  1875 
  (Records, 
  G. 
  S. 
  I., 
  

   VII, 
  page 
  73) 
  a 
  strong 
  unconformity 
  of 
  the 
  Bag 
  marine 
  f 
  os- 
  

   siferous 
  beds 
  to 
  the 
  underlying 
  sandstones 
  of 
  Ghatia 
  at 
  the 
  

   eastern 
  end 
  of 
  the 
  area 
  were 
  brought 
  to 
  notice, 
  and 
  the 
  

   decided 
  affinity 
  of 
  these 
  latter 
  with 
  the 
  upper 
  Gondwana 
  

   pointed 
  out. 
  After 
  the 
  correlation 
  by 
  Dr. 
  Feistmantel 
  of 
  the 
  

   flora 
  of 
  the 
  Jurassic 
  Umia 
  group 
  of 
  Catch 
  with 
  that 
  of 
  the 
  

   topmost 
  group 
  (Jabalpur) 
  of 
  the 
  Gondwana 
  system 
  in 
  the 
  

   Satpura 
  region, 
  the 
  absence 
  of 
  any 
  rock 
  in 
  Cutch 
  between 
  

   the 
  Umia 
  group 
  and 
  the 
  thin 
  zone 
  of 
  marine 
  cretaceous 
  

   deposits, 
  to 
  represent 
  the 
  mass 
  of 
  supposed 
  cretaceous 
  sand- 
  

   stone 
  in 
  the 
  lower 
  Narbada 
  region, 
  was 
  noteworthy 
  as 
  con- 
  

   firming 
  the 
  view 
  of 
  these 
  latter 
  being 
  really 
  of 
  Gondwana 
  

   (Umia) 
  age. 
  Prom 
  Mr. 
  Bose's 
  own 
  description 
  the 
  same 
  

   view 
  is 
  further 
  confirmed. 
  He 
  did 
  not, 
  it 
  is 
  true, 
  detect 
  any 
  

   other 
  case 
  of 
  unconformity 
  of 
  the 
  oyster-bed 
  with 
  the 
  under- 
  

   lying 
  sandstone, 
  but 
  the 
  distribution 
  of 
  the 
  two 
  is 
  conspi- 
  

   cuously 
  distinct, 
  the 
  latter 
  occurring 
  far 
  and 
  wide 
  apart 
  from 
  

   the 
  marine 
  beds, 
  while 
  the 
  oyster-bed 
  is 
  only 
  noticed 
  with 
  the 
  

   other 
  marine 
  beds, 
  and 
  is 
  described 
  as 
  passing 
  into 
  them 
  (I. 
  c. 
  9 
  

   page 
  33). 
  Moreover, 
  the 
  Nimar-sandstone 
  is 
  described 
  as 
  hav- 
  

   ing 
  a 
  strong 
  resemblance 
  to 
  the 
  Gondwana 
  beds 
  of 
  Ghatia, 
  and 
  

   as 
  containing 
  the 
  same 
  fossil 
  drift-wood 
  (pp. 
  32-35). 
  And 
  

   now 
  the 
  Kathiawar 
  evidence 
  comes 
  in 
  : 
  in 
  comparative 
  proxi- 
  

   mity 
  to 
  the 
  lower 
  Narbada 
  region, 
  and 
  directly 
  in 
  exten- 
  

   sion 
  of 
  it, 
  we 
  find 
  a 
  small 
  group 
  fairly 
  representing 
  the 
  

   marine 
  cretaceous 
  beds 
  of 
  Bag 
  and 
  resting 
  directly 
  on 
  the 
  

  

  