﻿$6 
  PROCEEDINGS 
  OP 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  the 
  metamorphosis 
  of 
  dolerite 
  into 
  hornblende-schist 
  you 
  succeeded 
  

   in 
  proving 
  what 
  had 
  certainly 
  been 
  suspected, 
  but 
  probably 
  never 
  so 
  

   clearly 
  demonstrated 
  before, 
  the 
  production 
  of 
  foliated 
  rocks 
  by 
  the 
  

   action 
  of 
  mechanical 
  forces 
  on 
  igneous 
  formations. 
  Your 
  i 
  British 
  

   Petrography/ 
  the 
  concluding 
  part 
  of 
  which 
  has 
  recently 
  appeared, 
  

   contains 
  many 
  original 
  observations, 
  and 
  well 
  maintains 
  the 
  scien- 
  

   tific 
  character 
  of 
  your 
  previous 
  writings, 
  whilst 
  it 
  supplies 
  a 
  much- 
  

   needed 
  desideratum 
  to 
  the 
  geologists 
  of 
  this 
  country. 
  The 
  Council 
  

   of 
  this 
  Society, 
  whilst 
  awarding 
  to 
  you 
  the 
  Bigsby 
  Medal 
  in 
  token 
  

   of 
  the 
  esteem 
  in 
  which 
  they 
  hold 
  your 
  work, 
  hope 
  that 
  your 
  ' 
  British 
  

   Petrography 
  ' 
  may 
  be 
  the 
  precursor 
  of 
  other 
  equally 
  valuable 
  additions 
  

   to 
  our 
  science. 
  

  

  Mr. 
  Teall, 
  in 
  reply, 
  said 
  : 
  — 
  

  

  I 
  beg 
  to 
  offer 
  my 
  sincere 
  thanks 
  to 
  the 
  Council 
  for 
  the 
  honour 
  

   they 
  have 
  conferred 
  upon 
  me, 
  and 
  to 
  you, 
  Sir, 
  for 
  the 
  kind 
  way 
  in 
  

   which 
  you 
  have 
  referred 
  to 
  my 
  work. 
  

  

  There 
  is 
  an 
  accidental 
  circumstance 
  which 
  adds 
  to 
  the 
  pleasure 
  I 
  

   feel 
  on 
  this 
  occasion 
  ; 
  it 
  is 
  that 
  I 
  receive 
  the 
  Bigsby 
  Medal 
  on 
  the 
  

   day 
  that 
  my 
  earliest 
  instructor 
  receives 
  the 
  highest 
  award 
  which 
  

   this 
  Society 
  can 
  give. 
  I 
  should 
  not 
  be 
  standing 
  here 
  to-day 
  if 
  it 
  had 
  

   not 
  been 
  my 
  good 
  fortune 
  to 
  come 
  in 
  contact 
  with 
  Prof. 
  Bonney 
  at 
  

   Cambridge. 
  

  

  