﻿ANNIVERSARY 
  ADDRESS 
  OF 
  THE 
  PRESIDENT. 
  J 
  I 
  

  

  Belemnites 
  1 
  genus 
  and 
  1 
  species. 
  

  

  Ammonites 
  1 
  „ 
  4 
  

  

  Dimyaria 
  9 
  „ 
  12 
  

  

  Monomyaria 
  5 
  „ 
  12 
  

  

  Brachiopoda 
  1 
  „ 
  2 
  

  

  Plantse 
  1 
  „ 
  1 
  

  

  18 
  32 
  

  

  There 
  can 
  be 
  little 
  doubt 
  that 
  the 
  fossils 
  of 
  the 
  Dunrobin 
  reefs 
  

   belong 
  to 
  the 
  Lower 
  Lias, 
  and 
  to 
  that 
  portion 
  which 
  Quenstedt 
  

   places 
  under 
  his 
  division 
  /3. 
  The 
  absence 
  of 
  Echinodermata 
  and 
  of 
  

   many 
  forms 
  of 
  Mollusca 
  occurring 
  in 
  the 
  Suabian 
  and 
  some 
  English 
  

   beds 
  would 
  tend 
  to 
  show 
  that 
  the 
  beds 
  were 
  probably 
  deposited 
  

   under 
  less 
  favourable 
  conditions. 
  

  

  This 
  may 
  have 
  been 
  due 
  to 
  a 
  shallower 
  and 
  turbulent 
  sea, 
  and 
  pos- 
  

   sibly 
  also 
  to 
  a 
  colder 
  climate. 
  " 
  Nevertheless," 
  Mr. 
  Judd 
  suggests, 
  

   " 
  in 
  spite 
  of 
  these 
  minor 
  peculiarities, 
  no 
  one 
  acquainted 
  with 
  the 
  

   association 
  of 
  Jurassic 
  species 
  in 
  England, 
  Northern 
  Erance, 
  and 
  

   Western 
  Germany 
  can 
  hesitate 
  to 
  regard 
  these 
  beds 
  in 
  the 
  north 
  of 
  

   Scotland 
  .... 
  as 
  included 
  within 
  the 
  same 
  ancient 
  province 
  of 
  

   marine 
  life 
  " 
  (loc. 
  cit. 
  p. 
  152). 
  Mr. 
  Judd 
  has 
  also 
  found 
  numerous 
  

   fragments 
  of 
  shelly 
  limestone 
  belonging 
  to 
  beds 
  that 
  compose 
  the 
  

   upper 
  part 
  of 
  the 
  Lower 
  Lias. 
  These 
  transported 
  fragments 
  in- 
  

   dicate 
  that 
  in 
  the 
  east 
  of 
  Scotland 
  there 
  existed 
  beds 
  of 
  limestone 
  of 
  

   Liassic 
  age 
  thicker 
  than 
  those 
  in 
  the 
  patch 
  which 
  has 
  escaped 
  de- 
  

   struction 
  at 
  Dunrobin. 
  

  

  The 
  clays 
  of 
  the 
  Middle 
  Lias 
  of 
  Dunrobin 
  reefs 
  have 
  yielded 
  33 
  

   species 
  : 
  — 
  

  

  Belemnites 
  1 
  genus 
  and 
  2 
  species. 
  

  

  Ammonites 
  1 
  ,, 
  4 
  „ 
  

  

  Gasteropoda 
  2 
  „ 
  2 
  „ 
  

  

  Dimyaria 
  9 
  „ 
  11 
  „ 
  

  

  Monomyaria 
  6 
  „ 
  11 
  „ 
  

  

  Brachiopoda 
  2 
  „ 
  2 
  „ 
  

  

  Crinoidea 
  1 
  ,, 
  1 
  „ 
  

  

  22 
  33 
  

  

  During 
  the 
  periods 
  represented 
  by 
  portions 
  of 
  the 
  Middle 
  Lias 
  and 
  

   the 
  Middle 
  Oolite 
  more 
  uniform 
  and 
  comparatively 
  deep-water 
  marine 
  

   conditions 
  prevailed 
  in 
  Scotland. 
  

  

  At 
  Loch 
  Spynie 
  and 
  Lhanbryd, 
  from 
  masses 
  of 
  micaceous 
  calca- 
  

   reous 
  sandstone 
  contained 
  in 
  the 
  Boulder-clay, 
  no 
  less 
  than 
  35 
  genera 
  

   and 
  60 
  species 
  were 
  collected 
  by 
  Mr. 
  Judd. 
  He 
  believes 
  that 
  these 
  

   fragments 
  with 
  Jurassic 
  fossils, 
  which 
  are 
  so 
  abundant 
  in 
  the 
  Elgin- 
  

   shire 
  drifts, 
  are 
  not 
  far 
  distant 
  from 
  the 
  parent 
  rocks 
  ; 
  they 
  pro- 
  

   bably 
  underlie 
  the 
  vast 
  masses 
  of 
  Boulder-clay 
  which 
  mask 
  the 
  

   country 
  (loc. 
  cit. 
  p. 
  156). 
  

  

  The 
  Lower 
  Oolite. 
  — 
  In 
  Sutherlandshire 
  thick 
  masses 
  of 
  sand- 
  

   stones, 
  shales, 
  and 
  coals 
  exhibit 
  full 
  evidence 
  of 
  deposition 
  under 
  

  

  