﻿Geological 
  Society. 
  703 
  

  

  them 
  deals 
  with 
  Nernst's 
  " 
  Third 
  " 
  law 
  of 
  Thermodynamics, 
  aud 
  

   another 
  (translated 
  by 
  Mr. 
  Bossigaol) 
  on 
  recent 
  work 
  upon 
  the 
  

   dissociation 
  of 
  C0 
  o 
  , 
  and 
  especially 
  on 
  the 
  use 
  of 
  cells 
  containing 
  

   glass 
  or 
  porcelain 
  septa 
  through 
  which 
  decomposition 
  takes 
  place 
  

   electrolytically. 
  These 
  appendices 
  include 
  some 
  of 
  the 
  most 
  

   interesting 
  matter 
  in 
  the 
  whole 
  volume. 
  

  

  We 
  commend 
  the 
  mode 
  in 
  which 
  the 
  translation 
  has 
  been 
  made 
  

   throughout 
  ; 
  and 
  we 
  are 
  glad 
  to 
  think 
  that 
  the 
  book 
  in 
  its 
  trans- 
  

   lated 
  form 
  will 
  become 
  still 
  more 
  widely 
  known 
  and 
  appreciated 
  

   than 
  heretofore. 
  

  

  LVIII. 
  Proceedings 
  of 
  Learned 
  Societies. 
  

   GEOLOGICAL 
  SOCIETY. 
  

   [Continued 
  from 
  p. 
  496.] 
  

  

  May 
  6th, 
  1908.— 
  Prof. 
  W. 
  J. 
  Sollas, 
  Sc.D., 
  LLJX, 
  F.R.S., 
  

  

  President, 
  in 
  the 
  Chair. 
  

  

  ^HE 
  following 
  communications 
  were 
  read 
  : 
  — 
  

  

  1. 
  ' 
  Solution-Valleys 
  in 
  the 
  Glyme 
  Area 
  of 
  Oxfordshire.' 
  By 
  

   the 
  Eev. 
  E. 
  C. 
  Spicer, 
  M.A., 
  E.G.S. 
  

  

  A 
  triangular 
  area 
  whose 
  sides 
  are 
  denned 
  by 
  the 
  converging 
  

   Evenlode 
  and 
  Cherwell 
  with 
  a 
  strike-valley, 
  containing 
  the 
  upper 
  

   Swere 
  for 
  its 
  base, 
  contains 
  a 
  smaller 
  triangular 
  area 
  denned 
  by 
  the 
  

   confluent 
  Glyme 
  and 
  Dorn. 
  This 
  area 
  is 
  part 
  of 
  the 
  gently-tilted 
  

   Great 
  Oolite 
  limestone-plateau, 
  which 
  is 
  indented 
  by 
  a 
  number 
  of 
  

   sunken 
  valleys 
  running 
  in 
  various 
  directions, 
  principally 
  with 
  a 
  

   strike-and-dip 
  trend, 
  that 
  show 
  no 
  marks 
  of 
  erosion 
  but 
  appear 
  to 
  

   be 
  subsidence-valleys. 
  They 
  begin 
  suddenly 
  at 
  any 
  part 
  of 
  the 
  

   area, 
  and 
  descend 
  with 
  sinuous 
  curves 
  to 
  a 
  main 
  valley 
  into 
  which 
  

   they 
  open 
  quietly 
  without 
  disturbing 
  the 
  main 
  valley's 
  contour, 
  aud 
  

   without 
  bringing 
  any 
  surface-debris. 
  The 
  main 
  valley 
  likewise 
  

   enters 
  a 
  stream-valley 
  in 
  a 
  similar 
  manner. 
  The 
  stream-valley 
  

   quietly 
  develops 
  into 
  a 
  broad 
  sinuous 
  river-valley, 
  with 
  a 
  floor, 
  

   level 
  in 
  transverse 
  section, 
  over 
  which 
  a 
  small 
  river-stream 
  aim- 
  

   lessly 
  meanders 
  with 
  the 
  Evenlode 
  characteristics. 
  A 
  gradation 
  is 
  

   shown 
  from 
  the 
  plateau 
  dry 
  valleys 
  to 
  the 
  meander-valleys, 
  which 
  

   are 
  sometimes 
  flooded 
  from 
  bank 
  to 
  bank 
  with 
  soakage-water. 
  The 
  

   plateau-area 
  is 
  quite 
  free 
  from 
  drift 
  or 
  gravels, 
  and 
  from 
  any 
  of 
  

   the 
  usual 
  marks 
  of 
  surface-denudation, 
  although 
  the 
  valleys 
  have 
  

   strongly-marked 
  cross-sections. 
  There 
  are 
  no 
  marks 
  of 
  marine 
  

   currents, 
  of 
  fluvio-glacial 
  scour, 
  or 
  of 
  ice. 
  There 
  are 
  no 
  wind-gaps 
  

   suggesting 
  beheaded 
  streams, 
  nor 
  any 
  evidence 
  of 
  vanished 
  heights 
  

   that 
  could 
  produce 
  torrents 
  sufficiently 
  strong 
  to 
  carve 
  out 
  the 
  

   present 
  surface. 
  At 
  the 
  mouths 
  of 
  several 
  of 
  these 
  dty 
  winding 
  

   valleys 
  issue 
  streams 
  strongly 
  impregnated 
  with 
  carbonate 
  of 
  

   lime. 
  It 
  is 
  suggested 
  that 
  percolating 
  water 
  forming 
  an 
  under- 
  

   ground 
  course 
  along 
  joint-lines 
  removes 
  enough 
  material 
  in 
  

   solution 
  to 
  weaken 
  a 
  long, 
  narrow, 
  winding 
  area 
  over 
  which 
  the 
  

  

  