﻿1864.] 
  YOTJNG 
  GLACIEKS. 
  461 
  

  

  later 
  glaciation, 
  they 
  would 
  indicate 
  at 
  least 
  60 
  feet 
  of 
  ice 
  above 
  the 
  

   watershed. 
  

  

  These, 
  the 
  largest 
  glaciers 
  of 
  the 
  district, 
  are 
  dwarfs 
  in 
  comparison 
  

   with 
  those 
  which 
  have 
  left 
  their 
  traces 
  in 
  other 
  parts 
  of 
  the 
  country, 
  

   but 
  the 
  set 
  next 
  to 
  be 
  described 
  are 
  very 
  much 
  smaller. 
  

  

  The 
  watershed 
  between 
  Fruid 
  and 
  Black 
  Hope 
  is 
  covered 
  with 
  

   Boulder-clay 
  on 
  its 
  south-eastern 
  side 
  as 
  far 
  up 
  as 
  the 
  central 
  peat- 
  

   moss. 
  Towards 
  Fruid 
  the 
  irregular 
  ground 
  is 
  thickly 
  strewed 
  with 
  

   detritus, 
  which 
  passes 
  over 
  the 
  waterfall, 
  lodged 
  among 
  the 
  recesses 
  

   of 
  roches 
  moutonnees, 
  and 
  appears 
  in 
  definite 
  mounds 
  at 
  the 
  foot. 
  

   The 
  glacier 
  seems 
  to 
  have 
  come 
  down 
  the 
  shallow 
  depression 
  on 
  the 
  

   north 
  flank 
  of 
  Hartfell 
  in 
  the 
  course 
  of 
  the 
  Back 
  Burn, 
  and 
  to 
  have 
  

   turned 
  abruptly 
  northwards, 
  wearing 
  its 
  course 
  through 
  the 
  Boulder- 
  

   clay, 
  against 
  which 
  on 
  the 
  right 
  side 
  its 
  detritus 
  rests, 
  down 
  to 
  the 
  

   rock 
  beneath. 
  

  

  Close 
  below 
  the 
  summit 
  of 
  Broad 
  Law, 
  on 
  the 
  south-west 
  side 
  

   commences 
  a 
  wide 
  valley, 
  soon 
  contracting 
  into 
  a 
  narrow, 
  along 
  whose 
  

   sides, 
  but 
  especially 
  towards 
  the 
  mouth, 
  smoothed 
  surfaces 
  and 
  roches 
  

   moutonnees 
  are 
  seen. 
  Pew 
  definite 
  mounds 
  appear, 
  and 
  the 
  upper 
  

   limit 
  of 
  the 
  detritus 
  is 
  very 
  irregular, 
  the 
  result 
  probably 
  of 
  denu- 
  

   dation. 
  While, 
  therefore, 
  the 
  character 
  of 
  the 
  debris 
  is 
  identical 
  and 
  

   continuous 
  with 
  that 
  in 
  Megget, 
  the 
  valley 
  seems 
  to 
  contain 
  a 
  

   moraine 
  in 
  a 
  stage 
  of 
  decay 
  only 
  less 
  advanced 
  than 
  in 
  that 
  to 
  the 
  

   east. 
  The 
  Broad 
  Law 
  and 
  Cramalt 
  Craig 
  are 
  connected 
  by 
  a 
  ridge 
  of 
  

   grit, 
  2200 
  feethigh, 
  whose 
  base 
  on 
  either 
  side 
  is 
  covered 
  with 
  detritus. 
  

   The 
  narrow 
  glen, 
  Linghope, 
  to 
  the 
  south-east 
  retains 
  little 
  signs 
  of 
  

   a 
  glacier 
  ; 
  indeed 
  it 
  is 
  only 
  by 
  careful 
  comparison 
  of 
  the 
  debris 
  

   covering 
  its 
  floor 
  with 
  that 
  of 
  other 
  valleys, 
  and 
  with 
  the 
  Boulder- 
  

   clay 
  lining 
  its 
  sides, 
  that 
  it 
  can 
  be 
  proved 
  to 
  have 
  contained 
  a 
  glacier, 
  

   which, 
  however, 
  did 
  not 
  reach 
  Megget, 
  a 
  high 
  bank 
  of 
  Boulder-clay 
  

   crossing 
  the 
  stream, 
  and 
  separating 
  it 
  from 
  the 
  main 
  valley. 
  On 
  

   the 
  north-west 
  side 
  of 
  the 
  col 
  the 
  evidence 
  is 
  clearer. 
  Definite 
  

   mounds 
  occur 
  a 
  little 
  below 
  the 
  roches 
  moutonnees 
  at 
  the 
  base 
  of 
  

   Polmood 
  Craig, 
  and 
  the 
  characteristic 
  moraine-matter 
  is 
  easily 
  

   recognized 
  as 
  far 
  as 
  the 
  second 
  ravine 
  on 
  the 
  left 
  side, 
  where 
  an 
  

   alluvial 
  plain 
  occupies 
  the 
  floor 
  of 
  the 
  valley. 
  Beyond 
  it 
  Boulder- 
  

   clay 
  lines 
  both 
  sides 
  down 
  to 
  the 
  stream. 
  

  

  Between 
  Cramalt 
  Craig 
  and 
  Dun 
  Law, 
  at 
  the 
  base 
  of 
  the 
  former, 
  

   is 
  an 
  elevated 
  piece 
  of 
  ground 
  covered 
  with 
  Boulder-clay 
  ; 
  it 
  is 
  over- 
  

   lapped 
  at 
  its 
  edge 
  by 
  detritus 
  which, 
  descending 
  from 
  the 
  foot 
  of 
  the 
  

   declivity 
  between 
  the 
  two 
  heights, 
  shows 
  a 
  few 
  definite 
  mounds 
  

   above 
  the 
  first 
  ravine 
  to 
  the 
  left, 
  and 
  gradually 
  thins 
  out 
  about 
  a 
  

   mile 
  and 
  a 
  half 
  from 
  its 
  commencement. 
  It 
  lies 
  in 
  a 
  groove 
  worn 
  

   through 
  Boulder- 
  clay, 
  which 
  lines 
  the 
  ravines 
  and 
  covers 
  the 
  slopes 
  

   on 
  either 
  side, 
  and 
  fills 
  the 
  valley 
  below 
  the 
  lowest 
  point 
  to 
  which 
  

   characteristic 
  moraine-matter 
  can 
  be 
  traced. 
  

  

  The 
  shape 
  and 
  contents 
  of 
  the 
  valleys 
  to 
  the 
  east 
  forbid 
  the 
  sup- 
  

   position 
  that 
  they 
  have 
  been 
  occupied 
  by 
  ice 
  since 
  the 
  period 
  of 
  the 
  

   Boulder-clay 
  which 
  fills 
  them. 
  

  

  The 
  east 
  side 
  of 
  Dollar 
  Law 
  is, 
  however, 
  skirted 
  by 
  a 
  deep 
  narrow 
  

   vol, 
  xx. 
  — 
  part 
  i. 
  2 
  k 
  

  

  