﻿A 
  SHr 
  KINGTON 
  VOLCANIC 
  SERIES 
  OF 
  SOUTH 
  DEVON. 
  377 
  

  

  bavc 
  bluish 
  flaggy 
  slates 
  of 
  the 
  type 
  of 
  the 
  Berry-Park 
  slates 
  over 
  

   the 
  lavas, 
  &c., 
  striking 
  parallel 
  with 
  them 
  in 
  the 
  lane 
  leading 
  to 
  

   Greenway 
  Parm. 
  They 
  continue 
  beyond 
  the 
  farm 
  to 
  the 
  wood, 
  

   where 
  the 
  purple 
  grits 
  appear 
  across 
  the 
  river, 
  and 
  strike 
  down 
  

   by 
  the 
  south 
  side 
  of 
  Marlpool. 
  Dr. 
  Holl 
  has 
  continued 
  the 
  section 
  

   from 
  here 
  to 
  Kingswear, 
  along 
  the 
  railway. 
  Some 
  grey 
  slates 
  with 
  

   a 
  few 
  calcareous 
  seams 
  line 
  the 
  north 
  side 
  of 
  this 
  inlet, 
  and 
  rising 
  

  

  from 
  below 
  them 
  a 
  great 
  mass 
  of 
  lavas 
  and 
  tuffs, 
  with 
  some 
  very 
  

   hard 
  rock, 
  forms 
  the 
  ledges, 
  until 
  we 
  round 
  Greenway 
  Quay 
  and 
  

   reach 
  their 
  base. 
  Along 
  the 
  bank 
  from 
  here 
  to 
  near 
  Galmpton 
  

   Mill 
  some 
  beds 
  of 
  dark 
  limestone 
  and 
  buff-coloured 
  shale 
  extend. 
  

   They 
  are 
  exceedingly 
  rich 
  in 
  corals, 
  the 
  prominent 
  forms 
  being 
  Alveo- 
  

   lites 
  (compressa 
  ?, 
  Edw. 
  & 
  H.), 
  large 
  specimens 
  of 
  Cyathopliyllum 
  

   damnoniense. 
  Phil., 
  and 
  others. 
  Cystipliyllum 
  vesiculosum, 
  Goldf., 
  

   also 
  a 
  specimen 
  ofHattia 
  occurred, 
  [the 
  latter] 
  with 
  a 
  quantity 
  of 
  AuJo- 
  

   pora 
  hanging 
  about 
  it. 
  Prom 
  the 
  bend 
  at 
  the 
  mill 
  to 
  the 
  head 
  of 
  

   the 
  creek 
  the 
  mudstone-like 
  beds 
  complete 
  the 
  tour 
  of 
  this 
  ground. 
  

  

  We 
  may 
  now 
  review 
  the 
  facts 
  that 
  have 
  been 
  adduced, 
  and 
  try 
  

   to 
  get 
  at 
  their 
  general 
  meaning. 
  

  

  In 
  the 
  first 
  place, 
  from 
  what 
  has 
  been 
  said, 
  it 
  will 
  be 
  seen 
  that 
  

   we 
  regard 
  the 
  mass 
  of 
  these 
  igneous 
  rocks 
  as 
  truly 
  intercalated 
  in 
  

   the 
  Devonian 
  deposits, 
  and 
  consequently 
  that 
  the 
  facts 
  observable 
  

   at 
  Pedhill 
  quarry 
  and 
  other 
  spots 
  near 
  Totnes 
  are 
  only 
  cases 
  of 
  

   contemporaneous 
  disturbance 
  and 
  erosion 
  of 
  a 
  quite 
  subordinate 
  

   character. 
  More 
  depends, 
  however, 
  upon 
  how 
  we 
  understand 
  the 
  

   limits 
  of 
  the 
  larger 
  limestone 
  masses. 
  It 
  must 
  be 
  admitted 
  that 
  

   the 
  evidence 
  on 
  this 
  subject 
  is 
  not 
  so 
  clear 
  as 
  one 
  might 
  wish. 
  I 
  

   quite 
  agree 
  with 
  Dr. 
  Holl, 
  speaking 
  of 
  the 
  Totnes 
  district, 
  that 
  the 
  

   limestones 
  have, 
  on 
  the 
  whole, 
  been 
  " 
  dislocated 
  from 
  the 
  slates, 
  so 
  

   that 
  their 
  boundaries 
  are 
  virtually 
  lines 
  of 
  fault." 
  

  

  The 
  country, 
  indeed, 
  is 
  shattered 
  by 
  faults. 
  Although 
  it 
  is 
  often 
  

   difficult 
  to 
  distinguish 
  the 
  slates 
  below 
  the 
  limestone 
  from 
  those 
  

   above, 
  yet 
  with 
  experience 
  one 
  can 
  detect 
  a 
  difference 
  in 
  the 
  Berry- 
  

   Park 
  slates 
  from 
  those 
  which 
  clearly 
  dip 
  under 
  the 
  Dartington, 
  

   Berry-Pomeroy, 
  &c. 
  limestones*. 
  But 
  why 
  should 
  there 
  not 
  also 
  

   be 
  slates 
  neither 
  exactly 
  above 
  nor 
  below 
  the 
  limestone, 
  but 
  re- 
  

   placing 
  it? 
  so 
  that 
  De 
  la 
  Beche's 
  words 
  would 
  also 
  be 
  true, 
  viz., 
  

   that 
  " 
  the 
  geological 
  continuation 
  of 
  certain 
  limestone 
  appears 
  to 
  

   consist 
  of 
  slate." 
  

  

  Discussion. 
  

  

  The 
  President 
  said 
  that 
  the 
  thanks 
  of 
  the 
  Society 
  were 
  especially 
  

   due 
  to 
  Dr. 
  Geikie 
  for 
  having 
  rescued 
  this 
  paper 
  from 
  oblivion. 
  

  

  Dr. 
  Geikie, 
  after 
  alluding 
  to 
  the 
  melancholy 
  interest 
  attaching 
  to 
  

   the 
  paper, 
  said 
  that 
  he 
  had 
  himself 
  urged 
  the 
  Author 
  to 
  formulate 
  

   his 
  ideas 
  upon 
  the 
  structure 
  of 
  the 
  country. 
  The 
  present 
  com- 
  

   munication, 
  however, 
  was 
  all 
  that 
  was 
  found 
  among 
  his 
  papers, 
  in 
  

  

  * 
  Note.— 
  A 
  specimen 
  in 
  my 
  collection 
  of 
  Krainenzel-schiefer, 
  from 
  Adorf, 
  

   Waldeck, 
  strongly 
  suggests 
  comparison 
  with 
  the 
  coarser 
  beds 
  of 
  the 
  Berry- 
  

   Park 
  slates. 
  

  

  