﻿1864.] 
  WOOD— 
  RED 
  CRAG. 
  121 
  

  

  2. 
  On 
  the 
  Structure 
  of 
  the 
  Bed 
  Crag 
  in 
  Suffolk 
  and 
  Essex. 
  By 
  

   Searles 
  V. 
  Wood, 
  jun., 
  Esq. 
  

  

  [Communicated 
  by 
  Searles 
  V. 
  Wood, 
  Esq., 
  F.G.S.] 
  

  

  [This 
  paper 
  was 
  withdrawn 
  by 
  permission 
  of 
  the 
  Council.] 
  

  

  (Abstract.) 
  

  

  By 
  reference 
  to 
  a 
  tabulated 
  description 
  of 
  about 
  fifty 
  sections 
  taken 
  

   from 
  various 
  parts 
  of 
  the 
  Bed-crag 
  area, 
  the 
  author 
  showed 
  that 
  the 
  

   deposit 
  is 
  structurally 
  divisible 
  into 
  five 
  stages, 
  of 
  which 
  the 
  1st, 
  

   2nd, 
  3rd, 
  and 
  4th 
  (counting 
  upwards) 
  were 
  not 
  deposited 
  under 
  

   water 
  ; 
  but 
  from 
  their 
  being 
  regularly 
  laminated, 
  at 
  angles 
  varying 
  

   between 
  25° 
  and 
  35°, 
  and 
  possessing 
  (with 
  the 
  exception 
  of 
  the 
  2nd) 
  

   an 
  unvarying 
  direction 
  in 
  every 
  stage, 
  he 
  regards 
  them 
  as 
  the 
  result 
  

   of 
  a 
  process 
  of 
  " 
  beaching 
  up," 
  by 
  which 
  was 
  formed 
  a 
  reef 
  extend- 
  

   ing 
  from 
  the 
  river 
  Aide 
  on 
  the 
  north 
  to 
  the 
  southern 
  extremity 
  of 
  

   the 
  deposit 
  in 
  Essex. 
  Of 
  these 
  four 
  stages, 
  the 
  4th 
  is 
  the 
  most 
  con- 
  

   stant 
  and 
  important, 
  — 
  the 
  1st, 
  2nd, 
  and 
  3rd 
  being 
  frequently 
  either 
  

   concealed 
  by 
  the 
  succeeding 
  stages, 
  or 
  having 
  been 
  destroyed 
  during 
  

   their 
  formation. 
  At 
  Walton-on-Naze 
  alone 
  do 
  any 
  of 
  the 
  four 
  lower 
  

   stages 
  contain 
  evidence 
  of 
  being 
  a 
  subaqueous 
  deposit; 
  there 
  the 
  

   1st 
  stage 
  is 
  so, 
  but 
  it 
  is 
  covered 
  by 
  two 
  reef-stages, 
  and 
  these 
  again 
  

   by 
  the 
  5th 
  stage. 
  

  

  The 
  5th 
  stage 
  is 
  invariably 
  horizontal, 
  and 
  contains 
  evidence 
  of 
  

   having 
  been 
  formed 
  under 
  water. 
  This 
  stage 
  is 
  developed 
  in 
  such 
  a 
  

   way 
  as 
  to 
  show 
  that 
  it 
  was 
  formed 
  in 
  channels 
  eroded 
  in 
  the 
  older 
  

   reef, 
  and 
  it 
  is 
  at 
  its 
  base 
  that 
  the 
  coprolite 
  -workings 
  occur. 
  This 
  

   stage 
  also 
  passes 
  up 
  at 
  Chillesford 
  into 
  the 
  sands 
  and 
  gravels, 
  termed 
  

   by 
  the 
  author 
  the 
  Lower 
  Drift, 
  which 
  underlie 
  the 
  boulder- 
  clay 
  ; 
  at 
  

   other 
  places 
  a 
  line 
  of 
  erosion 
  exists 
  between 
  the 
  5th 
  stage 
  and 
  the 
  

   drift-sands. 
  

  

  January 
  20, 
  1864. 
  

  

  John 
  Sidney 
  Crossley, 
  Esq., 
  M.Inst.C.E., 
  The 
  Field, 
  Litchurch, 
  

   Derby 
  ; 
  The 
  Bev. 
  Henry 
  Housman, 
  Northall, 
  near 
  Dunstable 
  ; 
  Colin 
  

   Wilson 
  Macrae, 
  Esq., 
  Oriental 
  Club, 
  18 
  Hanover 
  Square 
  ; 
  William 
  

   Boby 
  Barr, 
  Esq., 
  Norris 
  Bank, 
  Stockport 
  ; 
  E. 
  J. 
  Bouth, 
  Esq., 
  M.A., 
  

   Fellow 
  of 
  St. 
  John's 
  College, 
  Cambridge, 
  St. 
  Beter's 
  College 
  ; 
  George 
  

   St. 
  Clair, 
  Esq., 
  Holford 
  House, 
  Begent's 
  Bark, 
  N.W. 
  ; 
  John 
  Benjamin 
  

   Stone, 
  Esq., 
  Holly 
  Villa, 
  Sutton 
  Street, 
  Aston, 
  near 
  Birmingham 
  ; 
  

   and 
  Mutu 
  Coomara 
  Swamy, 
  Esq., 
  Member 
  of 
  H.M. 
  Legislative 
  Council 
  

   of 
  Ceylon, 
  Athenaeum 
  Club, 
  Ball 
  Mall, 
  were 
  elected 
  Fellows. 
  

  

  II 
  Cavaliere 
  Baolo 
  Savi, 
  Brofessor 
  of 
  Geology 
  in 
  the 
  University 
  of 
  

   Bisa, 
  was 
  elected 
  a 
  Foreign 
  Member. 
  

  

  The 
  following 
  communications 
  were 
  read 
  : 
  — 
  

  

  