﻿462 
  THE 
  MORTE 
  SLATES 
  AND 
  ASSOCIATED 
  BEDS. 
  [Aug. 
  1 
  89 
  7, 
  

  

  other 
  areas, 
  to 
  cling 
  to 
  the 
  belief 
  that 
  previous 
  observers 
  could 
  

   not 
  have 
  made 
  a 
  mistake 
  : 
  it 
  was 
  enough 
  to 
  say 
  that 
  they, 
  at 
  least, 
  

   had 
  not 
  the 
  advantage 
  of 
  seeing 
  the 
  new 
  evidence 
  which 
  he 
  and 
  

   his 
  friends 
  who 
  were 
  working 
  with 
  him 
  had 
  obtained. 
  He 
  did 
  not 
  

   read 
  in 
  detail 
  the 
  descriptions 
  of 
  the 
  species, 
  as 
  he 
  thought 
  that 
  it 
  

   would 
  be 
  sufficient 
  to 
  mention 
  some 
  of 
  the 
  most 
  characteristic 
  forms 
  

   which 
  elsewhere 
  are 
  supposed 
  to 
  mark 
  fairly 
  distinct 
  zones. 
  There 
  

   was, 
  in 
  his 
  opinion, 
  a 
  gradual 
  passage 
  from 
  the 
  Silurian 
  rocks 
  of 
  

   North 
  "Devon 
  to 
  the 
  Lower 
  Devonian 
  Beds 
  of 
  West 
  Somerset, 
  and 
  it 
  

   was 
  interesting 
  to 
  find 
  Dalmanites 
  and 
  Homalonotus 
  (characteristic 
  

   Silurian 
  genera) 
  in 
  tl 
  e 
  latter, 
  in 
  association 
  with 
  well-known 
  Lower 
  

   Devonian 
  fossils. 
  The 
  beds 
  on 
  the 
  north 
  side, 
  previously 
  supposed 
  

   to 
  be 
  older 
  than 
  these, 
  are 
  separated 
  from 
  them 
  by 
  faults 
  and 
  

   contain 
  typical 
  Middle 
  Devonian 
  fossils. 
  

  

  