﻿ANNIVERSARY 
  ADDRESS 
  OE 
  THE 
  PRESIDENT. 
  7 
  7 
  

  

  From 
  Scalpa 
  Mr. 
  Judd 
  has 
  recorded 
  25 
  species, 
  representing 
  12 
  

   genera. 
  In 
  Tobermory 
  the 
  " 
  Pabba 
  Shales 
  " 
  have 
  yielded 
  to 
  Mr. 
  

   Hugh 
  Miller, 
  E.G.S., 
  of 
  the 
  Geological 
  Survey, 
  18 
  genera 
  and 
  31 
  

   species, 
  a 
  fauna 
  differing 
  from 
  that 
  named 
  above, 
  namely 
  : 
  — 
  

  

  Belemnites 
  ] 
  genus 
  and 
  2 
  species. 
  

  

  Ammonites 
  1 
  „ 
  6 
  „ 
  

  

  Gasteropoda 
  2 
  „ 
  2 
  „ 
  

  

  Dimyaria 
  8 
  ,, 
  11 
  „ 
  

  

  Monomyaria 
  6 
  „ 
  10 
  „ 
  

  

  18 
  31 
  

  

  The 
  Upper 
  Lias. 
  — 
  The 
  parallelism 
  of 
  the 
  Upper 
  Lias 
  of 
  Scotland 
  

   with 
  that 
  of 
  England 
  is 
  striking 
  and 
  absolute. 
  In 
  the 
  upper 
  part 
  

   we 
  find 
  Am. 
  communis 
  &c. 
  associated 
  with 
  Posidonomya 
  Bronni 
  and 
  

   Belemnites 
  ; 
  at 
  the 
  base 
  abundance 
  of 
  Am. 
  serpentinus, 
  A. 
  radians, 
  

   A. 
  elegans, 
  and 
  others 
  belonging 
  to 
  the 
  group 
  Falciferi 
  (loc. 
  cit. 
  

   pp. 
  717, 
  718). 
  

  

  Looking 
  at 
  the 
  uniform 
  extension 
  of 
  the 
  Lias 
  group 
  through 
  

   England 
  from 
  Lyme 
  Regis 
  to 
  Bedcar 
  continuously 
  as 
  the 
  western 
  

   edge 
  of 
  the 
  strike, 
  so 
  left 
  by 
  denudation, 
  aud 
  seeing 
  that 
  only 
  at 
  one 
  

   place 
  to 
  the 
  west 
  ("Wem, 
  in 
  Shropshire), 
  besides 
  probably 
  a 
  patch 
  in 
  

   Cumberland 
  and 
  the 
  Lower 
  Lias 
  of 
  the 
  Antrim 
  coast, 
  we 
  must 
  be 
  

   astonished 
  to 
  see 
  such 
  a 
  development 
  of 
  the 
  English 
  southern 
  and 
  

   north-eastern 
  beds 
  so 
  far 
  to 
  the 
  N. 
  W. 
  ; 
  and, 
  but 
  for 
  the 
  exposures 
  above 
  

   named, 
  no 
  evidence 
  would 
  have 
  been 
  afforded 
  us 
  of 
  any 
  extension 
  to 
  

   the 
  N.W. 
  The 
  researches 
  of 
  Mr. 
  Judd 
  have, 
  however, 
  thrown 
  new 
  

   light 
  upon 
  the 
  geographical 
  extension 
  and 
  distribution 
  in 
  time 
  of 
  the 
  

   Lower 
  Jurassic 
  rocks, 
  leaving 
  us 
  to 
  restore 
  the 
  lost 
  area 
  and 
  still 
  

   older 
  series 
  now 
  below 
  the 
  North 
  Atlantic 
  and 
  to 
  the 
  west 
  of 
  the 
  

   Hebrides. 
  The 
  " 
  patches 
  " 
  left 
  of 
  these 
  Mesozoic 
  rocks 
  so 
  rich 
  in 
  

   organic 
  remains 
  on 
  and 
  around 
  the 
  islands 
  that 
  fringe 
  the 
  Highland 
  

   coast, 
  testify 
  to 
  the 
  grandeur 
  and 
  extent 
  of 
  the 
  original 
  deposit 
  ; 
  

   probably 
  nowhere 
  in 
  Europe 
  were 
  the 
  Secondary 
  rocks 
  more 
  com- 
  

   pletely 
  developed. 
  

  

  The 
  Lower 
  Oolite. 
  — 
  Mr. 
  Judd, 
  in 
  discussing 
  these 
  members 
  of 
  the 
  

   Jurassic 
  series, 
  states 
  that 
  they 
  must 
  have 
  had 
  a 
  very 
  extended 
  geo- 
  

   graphical 
  distribution 
  and 
  been 
  of 
  considerable 
  thickness 
  ; 
  they 
  have 
  

   been 
  detected 
  at 
  various 
  points 
  from 
  the 
  Shiant 
  Isles 
  in 
  the 
  north 
  

   to 
  Ardnamurchan 
  in 
  the 
  south, 
  forming, 
  indeed, 
  what 
  would 
  be 
  the 
  

   eastern 
  edge 
  of 
  the 
  northern 
  Jurassic 
  basin. 
  The 
  Inferior 
  Oolite 
  in 
  

   the 
  Western 
  Islands 
  is 
  probably 
  400 
  feet 
  thick. 
  Mr. 
  Judd 
  divides 
  

   the 
  series 
  into 
  four 
  members 
  : 
  — 
  

  

  No. 
  1. 
  Marine. 
  

   ,, 
  2. 
  Estuarine. 
  

   „ 
  3. 
  Marine, 
  with 
  Am. 
  Blagdeni, 
  A. 
  Humphriesianus, 
  A, 
  

  

  coronatus, 
  and 
  Bel. 
  giganteus. 
  

   „ 
  4. 
  Marine, 
  with 
  Am. 
  Murchisonce, 
  A. 
  corrugatus, 
  and 
  A. 
  

  

  Iceviusculus. 
  

  

  