﻿1864.] 
  HONEYMAN 
  ARISAIG, 
  NOVA 
  SCOTIA. 
  333 
  

  

  1. 
  On 
  the 
  Geology 
  0/ 
  Arisaig, 
  Nova 
  Scotia. 
  

   By 
  the 
  Rev. 
  D. 
  Honeyman, 
  F.G.S. 
  

  

  Contents. 
  

  

  1. 
  Introduction. 
  

  

  2. 
  General 
  Description 
  of 
  the 
  Arisaig 
  District. 
  

  

  3. 
  Section 
  from 
  North 
  to 
  South. 
  

  

  4. 
  Section 
  from 
  the 
  East 
  of 
  Arisaig 
  Pier 
  to 
  Doctor's 
  Brook. 
  

  

  5. 
  Section 
  from 
  the 
  Frenchman's 
  Barn 
  to 
  M'Cara's 
  Brook. 
  

  

  6. 
  Conclusion. 
  

  

  § 
  1. 
  Introduction. 
  

  

  The 
  district 
  which 
  is 
  the 
  subject 
  of 
  this 
  paper 
  is 
  situated 
  on 
  the 
  

   north-east 
  side 
  of 
  Nova 
  Scotia, 
  on 
  the 
  Gulf 
  of 
  St. 
  Lawrence, 
  and 
  

   from 
  ten 
  to 
  fourteen 
  miles 
  south-west 
  of 
  Cape 
  St. 
  George. 
  Several 
  

   years 
  since, 
  this 
  locality 
  was 
  brought 
  under 
  the 
  notice 
  of 
  the 
  Society 
  

   by 
  Dr. 
  J. 
  W. 
  Dawson. 
  

  

  Its 
  characteristic 
  strata 
  were 
  then 
  considered 
  by 
  him 
  to 
  be 
  of 
  

   Silurian 
  age 
  (Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  vi. 
  p. 
  347). 
  Subsequently 
  

   in 
  his 
  ' 
  Acadian 
  Geology,' 
  guided 
  by 
  the 
  opinion 
  of 
  Sir 
  Charles 
  

   Lyell, 
  he 
  pronounced 
  these 
  deposits 
  to 
  be 
  equivalent 
  to 
  the 
  Hamilton 
  

   and 
  Chemung 
  (U. 
  S.) 
  groups, 
  and 
  consequently 
  to 
  be 
  of 
  Devonian 
  

   age. 
  

  

  Having 
  made 
  the 
  locality 
  a 
  special 
  study 
  for 
  a 
  great 
  part 
  of 
  two 
  

   years, 
  and 
  having 
  compared 
  the 
  fossils 
  obtained 
  from 
  the 
  strata 
  oc- 
  

   curring 
  there 
  with 
  those 
  figured 
  in 
  Sir 
  E. 
  I. 
  Murchison's 
  ' 
  Siluria,' 
  

   I 
  was 
  convinced, 
  beyond 
  all 
  doubt, 
  that 
  they 
  were 
  for 
  the 
  most 
  part 
  

   equivalent 
  to 
  the 
  Upper 
  Ludlow*. 
  In 
  the 
  following 
  year 
  Dr. 
  Daw- 
  

   son 
  communicated 
  a 
  paper 
  to 
  the 
  same 
  Society, 
  " 
  On 
  the 
  Geology 
  of 
  

   Nova 
  Scotia," 
  in 
  which, 
  besides 
  confirming 
  my 
  opinion, 
  he 
  separated 
  

   the 
  strata 
  in 
  question 
  into 
  an 
  upper 
  and 
  a 
  lower 
  series 
  f. 
  Further 
  

   progress 
  was 
  afterwards 
  made 
  by 
  Professor 
  Hall's 
  determination 
  of 
  

   many 
  of 
  the 
  Arisaig 
  fossils 
  £. 
  

  

  Professor 
  Hall 
  and 
  Dr. 
  Dawson 
  have 
  again 
  confirmed 
  my 
  opinion 
  

   in 
  regard 
  to 
  the 
  age 
  of 
  the 
  upper 
  member 
  of 
  this 
  series, 
  pronouncing 
  

   it 
  to 
  be 
  the 
  equivalent 
  of 
  the 
  Lower 
  Helderberg 
  group, 
  and 
  the 
  

   lower 
  to 
  be 
  the 
  equivalent 
  of 
  the 
  Clinton, 
  U. 
  S. 
  ; 
  for 
  one 
  of 
  its 
  cha- 
  

   racteristic 
  organisms 
  is 
  a 
  Graptolite, 
  not 
  distinguishable, 
  according 
  to 
  

   Professor 
  Hall, 
  from 
  Graptoliihus 
  Clintonensis, 
  Hall. 
  

  

  Having 
  examined 
  another 
  locality 
  somewhat 
  particularly, 
  at 
  the 
  

   East 
  Eiver, 
  I 
  found, 
  in 
  situ, 
  fossils 
  similar 
  to 
  those 
  of 
  the 
  upper 
  

   member 
  of 
  the 
  Arisaig 
  series 
  ; 
  and 
  others, 
  also 
  in 
  situ, 
  which 
  I 
  con- 
  

   sidered 
  were 
  of 
  a 
  different 
  age. 
  I 
  had 
  found 
  organisms 
  similar 
  to 
  

   the 
  latter, 
  in 
  boulders 
  on 
  the 
  Arisaig 
  shore, 
  in 
  abundance. 
  I 
  was 
  

   therefore 
  led 
  to 
  infer 
  the 
  existence 
  of 
  a 
  member 
  of 
  the 
  Arisaig 
  series 
  

   between 
  the 
  equivalents 
  of 
  the 
  Upper 
  Ludlow 
  and 
  the 
  Clinton, 
  

   which 
  I 
  considered 
  to 
  be 
  equivalent 
  to 
  the 
  Wenlock. 
  This 
  belief 
  

  

  * 
  See 
  my 
  paper 
  " 
  On 
  the 
  Fossiliferous 
  Rocks 
  of 
  Arisaig," 
  Trans. 
  Lit. 
  and 
  

   Sci. 
  Soc. 
  Nova 
  Scotia, 
  1859. 
  

  

  t 
  Trans., 
  &c, 
  1860. 
  

  

  \ 
  See 
  Hall's 
  Appendix 
  to 
  Dawson's 
  Paper 
  " 
  On 
  the 
  Silurian 
  and 
  Devonian 
  

   Rocks 
  of 
  Nova 
  Scotia," 
  Canadian 
  Naturalist 
  and 
  Geologist, 
  vol. 
  v. 
  pp. 
  144 
  etseq. 
  

  

  vol. 
  xx. 
  — 
  part 
  i. 
  2 
  b 
  

  

  