﻿ON 
  THE 
  EOCENE 
  AND 
  OLIGOCENE 
  OE 
  THE 
  HAMPSHIKE 
  BASIN. 
  461 
  

  

  15. 
  On 
  the 
  Relations 
  of 
  the 
  Eocene 
  and 
  Oligocene 
  Steata 
  in 
  the 
  

   Hampshire 
  Basin. 
  By 
  Prof. 
  John 
  W. 
  Jtjdd, 
  F.R.S., 
  Sec. 
  G.S. 
  

   (Read 
  April 
  26, 
  1882.) 
  

  

  I. 
  Introduction. 
  

   Since 
  the 
  publication 
  of 
  my 
  paper 
  " 
  On 
  the 
  Oligocene 
  Strata 
  of 
  

   the 
  Hampshire 
  Basin 
  " 
  *, 
  I 
  have 
  been 
  favoured 
  with 
  many 
  valuable 
  

   suggestions 
  and 
  criticisms 
  from 
  geologists, 
  both 
  in 
  this 
  and 
  other 
  

   countries 
  ; 
  and 
  the 
  time 
  has 
  now 
  perhaps 
  arrived 
  when 
  some 
  of 
  the 
  

   interesting 
  questions 
  thus 
  raised 
  may 
  be 
  discussed 
  with 
  advantage. 
  

  

  The 
  great 
  object 
  of 
  my 
  former 
  memoir 
  was 
  to 
  determine 
  the 
  

   age 
  and 
  relations 
  of 
  a 
  series 
  of 
  marine 
  beds 
  which 
  contain 
  a 
  highly 
  

   interesting 
  fauna 
  — 
  a 
  fauna 
  presenting 
  the 
  closest 
  affinities 
  with 
  

   that 
  of 
  a 
  well-defined 
  system 
  of 
  strata 
  very 
  widely 
  distributed 
  in 
  

   Central 
  Europe. 
  

  

  In 
  framing 
  his 
  classification 
  of 
  the 
  Hampshire 
  Tertiaries, 
  the 
  

   late 
  Prof. 
  Edward 
  Eorbes 
  gave 
  no 
  place 
  to 
  this 
  important 
  series 
  of 
  

   beds 
  — 
  a 
  fact 
  which 
  does 
  not 
  seem 
  to 
  have 
  been 
  sufficiently 
  considered 
  

   by 
  those 
  among 
  my 
  critics 
  who 
  have 
  demurred 
  to 
  my 
  proposed 
  modifi- 
  

   cation 
  of 
  Forbes's 
  classification 
  as 
  unnecessary 
  and, 
  therefore, 
  un- 
  

   warrantable. 
  

  

  The 
  history 
  of 
  the 
  discovery 
  of 
  this 
  interesting 
  marine 
  series 
  does 
  

   not 
  appear 
  to 
  be 
  generally 
  known. 
  The 
  late 
  Sir 
  Charles 
  Lyell 
  spent 
  

   his 
  earliest 
  years 
  in 
  the 
  New 
  Eorest, 
  residing 
  at 
  Bartley 
  Lodge 
  near 
  

   Lyndhurst. 
  At 
  that 
  time 
  shelly 
  marls 
  appear 
  to 
  have 
  been 
  in 
  great 
  

   request 
  among 
  agriculturists, 
  being 
  employed 
  by 
  them 
  as 
  a 
  manure 
  

   on 
  some 
  of 
  the 
  poorer 
  soils, 
  like 
  the 
  similar 
  materials 
  of 
  the 
  French 
  

   Fahluns 
  and 
  our 
  own 
  Crags. 
  Now, 
  in 
  the 
  hills 
  lying 
  on 
  the 
  north 
  

   side 
  of 
  the 
  town 
  of 
  Lyndhurst 
  such 
  marls 
  were 
  found 
  to 
  occur, 
  

   and 
  numerous 
  pits 
  were 
  opened 
  for 
  their 
  excavation. 
  In 
  his 
  visits 
  

   to 
  these 
  marl-pits 
  Lyell 
  found 
  the 
  beds 
  to 
  be 
  crowded 
  with 
  beautiful 
  

   and 
  well-preserved 
  marine 
  shells, 
  of 
  which 
  he 
  made 
  a 
  considerable 
  

   collection, 
  sending 
  examples 
  of 
  them 
  to 
  Webster 
  and 
  Sowerby. 
  

  

  At 
  that 
  time 
  all 
  the 
  marine 
  bands 
  which 
  occur 
  in 
  the 
  Hempstead, 
  

   Bembridge, 
  and 
  Headon 
  series 
  were 
  confounded 
  with 
  one 
  another 
  

   under 
  the 
  name 
  of 
  the 
  " 
  Upper 
  Marine 
  Formation 
  ;" 
  and 
  it 
  is 
  not 
  

   surprising, 
  therefore, 
  that 
  Webster 
  at 
  once 
  claimed 
  these 
  marine 
  

   marls 
  of 
  Lyndhurst 
  as 
  being 
  of 
  that 
  agef. 
  Sowerby, 
  however, 
  

   seems 
  to 
  have 
  recognized 
  the 
  fact 
  that 
  the 
  fauna 
  of 
  the 
  Lyndhurst 
  

   beds 
  is 
  a 
  peculiar 
  one 
  ; 
  and 
  he 
  described 
  and 
  figured 
  two 
  of 
  the 
  most 
  

   remarkable 
  and 
  distinctive 
  of 
  its 
  fossils, 
  namely 
  Voluta 
  geminata, 
  

   and 
  Cardita 
  deltoidea%. 
  

  

  The 
  employment 
  of 
  these 
  marls, 
  or 
  shelly 
  clays, 
  of 
  the 
  New 
  

   Forest 
  for 
  agricultural 
  purposes 
  soon 
  ceased, 
  however 
  ; 
  but 
  the 
  

   numerous 
  abandoned 
  workings 
  and 
  the 
  names 
  given 
  to 
  certain 
  

  

  * 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  xxxvi. 
  (1880) 
  p. 
  137. 
  

   t 
  Traus. 
  Geol. 
  Soc. 
  2nd 
  ser. 
  vol. 
  i. 
  p. 
  94. 
  

   \ 
  Min. 
  Conch, 
  t. 
  398. 
  f. 
  8, 
  t. 
  259. 
  f. 
  1. 
  

  

  