﻿PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  83 
  

  

  2. 
  " 
  On 
  the 
  Ashprington 
  Volcanic 
  Series 
  of 
  South 
  Devon." 
  By 
  

   the 
  late 
  Arthur 
  Champernowne, 
  Esq., 
  M. 
  A., 
  F.G.S. 
  (Communicated 
  

   by 
  Dr. 
  A. 
  Geikie, 
  F.E.S., 
  F.G.S.) 
  

  

  The 
  following 
  specimens 
  were 
  exhibited 
  : 
  — 
  

  

  Specimens 
  and 
  microscopic 
  sections 
  of 
  Alderney 
  Rocks, 
  exhibited 
  

   by 
  the 
  Rev. 
  Edwin 
  Hill, 
  F.G.S., 
  in 
  illustration 
  of 
  his 
  paper. 
  

  

  Specimens 
  illustrating 
  the 
  paper 
  by 
  the 
  late 
  A. 
  Champernowne, 
  

   Esq., 
  F.G.S., 
  exhibited 
  by 
  Dr. 
  A. 
  Geikie, 
  F.R.S., 
  F.G.S. 
  

  

  May 
  22, 
  1889. 
  

  

  W. 
  T. 
  Blaneord, 
  LL.D., 
  F.R.S., 
  President, 
  in 
  the 
  Chair. 
  

  

  James 
  Berry, 
  Esq., 
  M.B., 
  B.Sc. 
  Lond., 
  F.R.C.S., 
  60 
  Welbeck 
  

   Street, 
  Cavendish 
  Square, 
  W. 
  ; 
  Arthur 
  Richard 
  Browne, 
  Esq., 
  care 
  

   of 
  Lord 
  Richard 
  Browne, 
  Reigate 
  ; 
  and 
  William 
  Fraser 
  Hume, 
  Esq., 
  

   Assoc. 
  Normal 
  School 
  of 
  Science, 
  27 
  Ella 
  Road, 
  Crouch 
  Hill, 
  N., 
  

   were 
  elected 
  Fellows 
  of 
  the 
  Society. 
  

  

  The 
  List 
  of 
  Donations 
  to 
  the 
  Library 
  was 
  read. 
  

  

  The 
  names 
  of 
  certain 
  Fellows 
  were 
  read 
  out 
  for 
  the 
  first 
  time 
  in 
  

   conformity 
  with 
  the 
  Bye-Laws, 
  Section 
  VI. 
  Art. 
  5, 
  in 
  consequence 
  

   of 
  the 
  non-payment 
  of 
  their 
  arrears 
  of 
  contributions. 
  

  

  The 
  following 
  communications 
  were 
  read 
  : 
  — 
  

  

  1. 
  " 
  Notes 
  on 
  the 
  Hornblende 
  Schists 
  and 
  Banded 
  Crystalline 
  

   Rocks 
  of 
  the 
  Lizard." 
  By 
  Major-Gen. 
  C. 
  A. 
  M 
  c 
  Mahon, 
  F.G.S. 
  

  

  2. 
  " 
  The 
  Upper 
  Jurassic 
  Clays 
  of 
  Lincolnshire." 
  By 
  Thomas 
  

   Roberts, 
  Esq., 
  M.A., 
  F.G.S. 
  

  

  3. 
  " 
  Origin 
  of 
  Movements 
  in 
  the 
  Earth's 
  Crust." 
  By 
  James 
  R. 
  

   Kilroe, 
  Esq. 
  (Communicated 
  by 
  A. 
  B. 
  Wynne, 
  Esq., 
  F.G.S.) 
  

  

  [Abstract.] 
  

  

  The 
  Author 
  is 
  convinced 
  that 
  a 
  very 
  important 
  factor 
  has 
  been 
  

   omitted 
  from 
  the 
  usual 
  explanation 
  offered 
  in 
  accounting 
  for 
  the 
  

   vast 
  movements 
  which 
  have 
  obtained 
  in 
  the 
  Earth's 
  crust. 
  His 
  

   acknowledgments 
  are 
  due 
  to 
  Mr. 
  Fisher 
  for 
  the 
  extensive 
  use 
  made 
  

   of 
  his 
  valuable 
  work. 
  He 
  also 
  refers 
  frequently 
  to 
  the 
  views 
  and 
  

   publications 
  of 
  other 
  writers 
  on 
  terrestrial 
  physics. 
  From 
  a 
  some- 
  

   what 
  conflicting 
  mass 
  of 
  figures 
  he 
  concludes 
  that 
  about 
  20 
  miles 
  

   would 
  remain 
  to 
  represent 
  the 
  amount 
  of 
  radial 
  contraction 
  due 
  to 
  

   cooling 
  during 
  the 
  period 
  from 
  Archaean 
  to 
  Recent 
  times, 
  corre- 
  

   sponding 
  to 
  a 
  circumferential 
  contraction 
  of 
  120 
  miles. 
  This 
  will 
  

   have 
  to 
  be 
  distributed 
  over 
  widely 
  separate 
  periods, 
  at 
  each 
  of 
  which 
  

   there 
  is 
  abundant 
  evidence 
  of 
  lateral 
  compression. 
  

  

  But 
  he 
  considers 
  that 
  this 
  shrinkage 
  alone 
  will 
  not 
  account 
  for 
  all 
  

   the 
  plication 
  or 
  distortion 
  of 
  strata 
  which 
  constitute 
  so 
  important 
  a 
  

  

  