﻿456 
  PROCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  [June 
  22, 
  

  

  scending 
  slightly 
  towards 
  the 
  mouth 
  of 
  the 
  Glen, 
  and 
  separated 
  

   from 
  the 
  hill 
  by 
  a 
  hollow 
  gradually 
  deepening 
  eastwards. 
  This, 
  the 
  

   lateral 
  moraine 
  of 
  the 
  glacier, 
  terminates 
  at 
  the 
  end 
  of 
  the 
  hill. 
  

   Beneath 
  it, 
  across 
  the 
  valley 
  external 
  to 
  the 
  terminal 
  moraine, 
  and 
  

   away 
  eastwards 
  towards 
  Loch 
  Skene, 
  is 
  a 
  sea 
  of 
  mounds, 
  showing 
  

   no 
  trace 
  of 
  order, 
  their 
  surface 
  strewn 
  with 
  large 
  blocks, 
  one 
  of 
  

   which 
  contains 
  over 
  1200 
  cubic 
  feet: 
  the 
  depth 
  from 
  the 
  grits 
  

   exposed 
  in 
  the 
  burn 
  to 
  the 
  summit 
  of 
  the 
  mound 
  is 
  nearly 
  90 
  feet. 
  

  

  Loch 
  Skene 
  lies 
  about 
  200 
  feet 
  lower 
  than 
  the 
  plain 
  of 
  Mid 
  Law. 
  

   It 
  is 
  open 
  to 
  the 
  east 
  and 
  south-east. 
  Mounds 
  of 
  detritus 
  he 
  below 
  

   the 
  smoothed 
  but 
  nowhere 
  striated 
  declivity 
  at 
  its 
  head, 
  and 
  skirt 
  

   the 
  loch 
  on 
  either 
  side, 
  while 
  beneath 
  the 
  water, 
  whose 
  depth 
  is 
  

   unknown, 
  appear 
  the 
  ruins 
  of 
  heaps 
  which 
  near 
  the 
  outflow 
  project 
  

   their 
  tops 
  above 
  the 
  surface. 
  The 
  stream 
  cuts 
  through 
  a 
  series 
  of 
  

   mounds 
  arranged 
  in 
  concentric 
  curves 
  pointing 
  down 
  in 
  the 
  axis 
  of 
  

   the 
  lower 
  half 
  of 
  the 
  loch. 
  Their 
  extremities 
  are 
  lost 
  among 
  the 
  

   heaps 
  descending 
  from 
  Mid 
  Law, 
  and 
  those 
  on 
  the 
  hill-side 
  to 
  the 
  

   left. 
  Nearly 
  a 
  dozen 
  may 
  be 
  counted; 
  after 
  that, 
  the 
  heaps 
  are 
  

   irregularly 
  disposed, 
  and 
  descend 
  towards 
  the 
  waterfall 
  of 
  the 
  Grey 
  

   Mare's 
  Tail. 
  The 
  loch 
  has 
  two 
  axes 
  : 
  that 
  of 
  the 
  lower 
  half 
  is 
  

   S.S.E. 
  ; 
  that 
  of 
  the 
  upper 
  is 
  S.E., 
  pointing 
  towards 
  the 
  top 
  of 
  Watch 
  

   Knowe. 
  On 
  the 
  foot 
  of 
  this 
  slope, 
  70 
  feet 
  above 
  the 
  level 
  of 
  the 
  

   loch, 
  is 
  a 
  long 
  ridge 
  called 
  the 
  Causey, 
  which 
  follows 
  the 
  curve 
  of 
  

   the 
  hill, 
  one 
  end 
  being 
  lost 
  among 
  the 
  mounds 
  of 
  the 
  Tail 
  Burn, 
  the 
  

   other 
  sinking 
  under 
  the 
  peat-moss 
  at 
  the 
  head 
  of 
  Winterhope, 
  on 
  

   the 
  east 
  side 
  of 
  the 
  loch. 
  This 
  ridge 
  is 
  at 
  once 
  a 
  frontal 
  and 
  lateral 
  

   moraine. 
  The 
  glacier 
  seems 
  to 
  have 
  divided 
  against 
  the 
  slope, 
  one 
  

   branch 
  passing 
  south 
  to 
  the 
  waterfall, 
  the 
  other 
  east 
  towards 
  Win- 
  

   terhope. 
  Between 
  this 
  and 
  Loch 
  Craig 
  the 
  hollow 
  is 
  filled 
  with 
  

   moraine-matter 
  buried 
  under 
  a 
  deep 
  peat-moss 
  : 
  but, 
  whereas 
  the 
  

   Causey 
  is 
  70 
  feet 
  above 
  the 
  water's 
  edge, 
  detritus 
  is 
  found 
  to 
  a 
  

   height 
  of 
  nearly 
  200 
  feet 
  on 
  the 
  slope 
  east 
  of 
  the 
  cliffs 
  of 
  Loch 
  Craig. 
  

   Thus 
  the 
  loch 
  is 
  dammed 
  in 
  on 
  the 
  south 
  and 
  east 
  by 
  moraine-matter, 
  

   probably 
  entirely 
  so, 
  the 
  first 
  exposure 
  of 
  rock 
  in 
  either 
  burn 
  being 
  

   at 
  some 
  distance 
  below 
  the 
  level 
  of 
  outflow. 
  I 
  cannot 
  say 
  precisely 
  

   how 
  far 
  to 
  the 
  south-west 
  moraine 
  -matter 
  extends, 
  as 
  the 
  ground 
  

   lying 
  in 
  the 
  county 
  of 
  Dumfries 
  has 
  not 
  yet 
  been 
  mapped 
  in 
  detail; 
  

   probably, 
  however, 
  it 
  does 
  not 
  extend 
  far 
  beyond 
  the 
  limits 
  assigned 
  

   to 
  it 
  on 
  the 
  present 
  Map 
  (fig. 
  2). 
  

  

  Following 
  the 
  course 
  of 
  Winterhope 
  Burn, 
  the 
  floor 
  of 
  the 
  glen 
  is 
  

   covered 
  with 
  detritus 
  of 
  varying 
  depth 
  and 
  irregular 
  surface, 
  which 
  

   dies 
  off 
  on 
  either 
  side 
  upon 
  slopes 
  of 
  Boulder-clay. 
  The 
  Garlie 
  

   Burn 
  joins 
  it 
  at 
  the 
  commencement 
  of 
  a 
  wider 
  portion 
  of 
  the 
  valley, 
  

   and 
  here, 
  the 
  right 
  bank 
  being 
  steep 
  and 
  surmounted 
  by 
  nearly 
  

   vertical 
  grit-faces, 
  a 
  few 
  mounds 
  of 
  the 
  characteristic 
  detritus 
  

   appear. 
  The 
  Garlie 
  seems 
  to 
  have 
  lodged 
  a 
  small 
  glacier, 
  the 
  

   stream 
  flowing 
  through 
  a 
  thin 
  sheet 
  of 
  detritus, 
  which 
  at 
  the 
  foot 
  on 
  

   the 
  left 
  side 
  forms 
  an 
  obscure 
  lateral 
  moraine. 
  In 
  the 
  main 
  valley 
  

   the 
  detritus 
  is 
  now 
  confined 
  to 
  the 
  right 
  side 
  of 
  the 
  stream, 
  a 
  few 
  

   mounds 
  appearing 
  here 
  and 
  there 
  ; 
  the 
  left 
  bank 
  is 
  a 
  long 
  slope 
  of 
  

  

  