﻿PREFACE. 
  

  

  It 
  is 
  desirable, 
  or 
  indeed 
  needful, 
  to 
  indicate 
  some 
  points 
  

   of 
  correlation 
  in 
  the 
  following 
  memoir 
  that 
  are 
  not 
  quite 
  up 
  

   to 
  date 
  of 
  our 
  information. 
  Only 
  the 
  paged 
  proofs 
  of 
  the 
  

   paper 
  came 
  into 
  my 
  hands 
  on 
  my 
  return 
  from 
  Europe, 
  and 
  

   after 
  Mr. 
  Eedden 
  had 
  himself 
  gone 
  on 
  furlough, 
  so 
  I 
  could 
  

   only 
  introduce 
  small 
  verbal 
  corrections. 
  

  

  In 
  the 
  table 
  of 
  formations 
  on 
  page 
  6, 
  Mr. 
  Fedden 
  affiliates 
  

   his 
  Trappean- 
  grits 
  of 
  Kathiawar 
  to 
  the 
  Infra- 
  trappean-grits 
  

   of 
  Cutch, 
  and 
  his 
  Wadhwan-sandstones 
  of 
  Kathiawar 
  to 
  

   the 
  Infra-trappeans 
  of 
  India. 
  This 
  latter 
  term 
  has 
  always 
  

   been 
  restricted 
  as 
  synonymous 
  with 
  the 
  Lameta 
  group 
  

   (Manual, 
  page 
  xiv, 
  et 
  passim), 
  and 
  although 
  Mr. 
  Blanford 
  

   in 
  his 
  cursory 
  survey 
  of 
  the 
  Narbada 
  region 
  (in 
  1864) 
  sug- 
  

   gested 
  that 
  the 
  cretaceous 
  beds 
  of 
  Bag 
  (Bagh) 
  were 
  probably 
  

   on 
  the 
  same 
  horizon 
  as 
  the 
  Lameta 
  group, 
  the 
  two 
  have 
  never 
  

   been 
  confounded, 
  the 
  latter 
  being 
  fresh- 
  water 
  deposits 
  and 
  

   the 
  former 
  marine. 
  Mr. 
  Bose 
  in 
  his 
  recent 
  detailed 
  survey 
  

   of 
  the 
  Bag 
  region 
  has 
  farther 
  established 
  the 
  separation 
  

   by 
  tracing 
  the 
  distinctive 
  Lameta 
  beds 
  overlying 
  the 
  marine 
  

   beds 
  of 
  Bag. 
  Now, 
  it 
  is 
  plain 
  from 
  Mr. 
  Fedden's 
  description 
  

   of 
  the 
  Wadhwan-sandstones 
  (page 
  12 
  et 
  seq.) 
  that 
  their 
  affinity 
  

   is 
  with 
  the 
  Bag 
  beds 
  and 
  not 
  with 
  the 
  Infra-trappeans, 
  or 
  

   Lametas 
  ; 
  the 
  fossil 
  contents, 
  the 
  stratigraphical 
  relation 
  of 
  

   decided 
  erosion-unconformity 
  to 
  the 
  overlying 
  trap, 
  and 
  the 
  

   close 
  connection 
  with 
  the 
  underlying 
  Umia 
  sandstone, 
  can 
  

  

  