﻿120 
  DB. 
  A. 
  DrXLOP 
  OX 
  THE 
  JEESET 
  EEICE-CXAr. 
  

  

  Motte 
  Island, 
  a 
  mass 
  of 
  diorite. 
  has 
  about 
  fourteen 
  or 
  fifteen 
  feet 
  of 
  

   the 
  clay 
  on 
  it. 
  some 
  fnree 
  hundred 
  yards 
  below 
  high-water 
  mark, 
  

   without 
  the 
  slightest 
  trace 
  of 
  decomposition 
  in 
  the 
  subjacent 
  rock. 
  

  

  This 
  theory 
  refers 
  to 
  Jersey 
  alone. 
  How 
  it 
  could 
  be 
  made 
  

   applicable 
  to 
  the 
  other 
  islands 
  and 
  the 
  coast 
  of 
  France. 
  I 
  do 
  not 
  

   know. 
  

  

  Discrssiox. 
  

  

  The 
  Pbesidext 
  would 
  not 
  like 
  to 
  give 
  a 
  decided 
  opinion 
  without 
  

   seeing 
  the 
  rocks, 
  but 
  he 
  was 
  disposed 
  to 
  regard 
  the 
  clay 
  as 
  the 
  

   result 
  of 
  rain-wash. 
  

  

  Dr. 
  Moeisox 
  observed 
  that 
  in 
  a 
  case 
  where 
  the 
  clay 
  was 
  resting 
  

   on 
  granite, 
  there 
  being 
  a 
  well-marked 
  line 
  of 
  demarcation 
  between 
  

   them, 
  and 
  the 
  underlying 
  granite 
  being 
  quite 
  undecomposed. 
  it 
  could 
  

   not 
  be 
  the 
  result 
  of 
  disintegration 
  in 
  situ. 
  

  

  Bev. 
  E. 
  Hixl 
  had 
  seen 
  an 
  analogous 
  clay 
  in 
  Guernsey, 
  where 
  it 
  

   was 
  clearly 
  the 
  result 
  of 
  decomposition 
  of 
  gneiss 
  in 
  situ. 
  In 
  a 
  

   specimen 
  of 
  vitrified 
  brick, 
  made 
  from 
  this 
  clay, 
  the 
  original 
  minerals 
  

   were 
  not 
  very 
  much 
  altered. 
  He 
  spoke 
  of 
  the 
  great 
  age 
  of 
  the 
  land- 
  

   surfaces 
  in 
  the 
  Channel 
  Islands. 
  

  

  