﻿MARINE 
  DRIFTS 
  IN 
  NORTH 
  WALES. 
  

  

  187 
  

  

  with 
  excavations, 
  showing 
  a 
  

   great 
  extent 
  of 
  well-rounded 
  

   gravel 
  and 
  sand, 
  at 
  an 
  eleva- 
  

   tion 
  of 
  1236 
  feet 
  ; 
  and 
  near 
  to 
  

   it 
  there 
  is 
  a 
  small 
  gravel 
  hillock. 
  

   jN". 
  of 
  Erwy 
  there 
  are 
  two 
  small 
  

   gravel 
  hillocks, 
  and 
  W. 
  of 
  them 
  

   a 
  large 
  knoll 
  with 
  several 
  

   pits, 
  showing 
  numerous 
  extra 
  

   rounded 
  stones, 
  and 
  much 
  fine 
  

   laminated 
  sand, 
  at 
  a 
  height 
  of 
  

   about 
  1130 
  feet. 
  The 
  stream 
  

   which 
  flows 
  past 
  Cae-llwyd 
  has 
  

   made 
  a 
  deep 
  excavation 
  in 
  

   more 
  or 
  less 
  rounded 
  gravel, 
  

   which 
  extends 
  for 
  a 
  greater 
  or 
  

   less 
  distance 
  on 
  both 
  sides 
  ; 
  

   but 
  here 
  and 
  elsewhere 
  it 
  is 
  

   obvious 
  that 
  the 
  gravel 
  was 
  

   deposited 
  before 
  the 
  present 
  

   stream 
  began 
  to 
  flow 
  over 
  it 
  

   and 
  excavate 
  its 
  present 
  chan- 
  

   nel. 
  The 
  heather-covered 
  moor 
  

   between 
  here 
  and 
  Mountain 
  

   Lodge 
  in 
  many 
  places 
  shows 
  

   signs 
  of 
  being 
  composed 
  of 
  

   more 
  or 
  less 
  rounded 
  gravel 
  

   and 
  sand; 
  while 
  E., 
  N"., 
  and 
  

   N.W. 
  of 
  Mountain 
  Lodge 
  there 
  

   are 
  numerous 
  exposures 
  of 
  

   rounded 
  gravel 
  from 
  1010 
  feet 
  

   up 
  to 
  1174 
  feet 
  (N. 
  of 
  Moun- 
  

   tain 
  Lodge). 
  The 
  lodge 
  (about 
  

   1100 
  feet) 
  and 
  its 
  garden 
  are 
  

   situated 
  on 
  a 
  great 
  thickness 
  

   of 
  gravel 
  and 
  fine 
  sand 
  (fig. 
  2). 
  

   Along 
  the 
  road 
  and 
  its 
  bifurca- 
  

   tions 
  N.W. 
  of 
  Mountain 
  Lodge, 
  

   as 
  high 
  up 
  at 
  least 
  as 
  1350 
  

   feet 
  above 
  the 
  sea, 
  there 
  is 
  

   much 
  rounded 
  gravel 
  and 
  sand 
  

   spread 
  over 
  comparatively 
  flat 
  

   ground, 
  or 
  rising 
  in 
  the 
  form 
  

   of 
  mounds 
  or 
  hillocks. 
  .Near 
  

   the 
  lodge, 
  on 
  the 
  8. 
  side 
  of 
  the 
  

   small 
  stream, 
  there 
  are 
  two 
  

   large 
  gravel-pits 
  now 
  disused 
  ; 
  

   and 
  about 
  352 
  yards 
  from 
  the 
  

   lodge 
  in 
  a 
  N.W. 
  direction, 
  is 
  the 
  

   gravel-pit, 
  1230 
  feet 
  above 
  the 
  

  

  Rounded 
  and 
  sub- 
  

   angular 
  gravel. 
  

  

  VA 
  Angular 
  stonea, 
  

   s>A 
  1606 
  feet. 
  

  

  — 
  Swampy 
  flat. 
  

  

  >Y 
  Angular 
  stones. 
  

  

  Rounded 
  and 
  sub- 
  

   — 
  angular 
  gravel, 
  

   1550 
  feet. 
  

  

  cfq' 
  

   to 
  

  

  Qq 
  

  

  <§< 
  

  

  Sq 
  

  

  Angular 
  gravel 
  and 
  S 
  

  

  Rounded 
  gravel, 
  

   sand, 
  and 
  rock, 
  

   1350 
  feet. 
  

  

  -Rounded 
  gravel. 
  

  

  .o 
  

  

  Bounded 
  gravel 
  ^^ 
  

  

  and 
  sand, 
  with 
  £-* 
  

  

  ' 
  shell-fragments, 
  CD 
  

  

  1280 
  feet. 
  & 
  

  

  Rounded 
  gravel 
  

   . 
  and 
  sand, 
  1230 
  

   feet. 
  

  

  Rounded 
  gravel 
  

   . 
  and 
  sand, 
  1170 
  

   feet. 
  

  

  Mountain 
  Lodge 
  , 
  CH 
  

   • 
  1100 
  feet. 
  3 
  

  

  Pine 
  sand 
  and 
  

   ' 
  gravel. 
  

  

  m 
  

  

  