﻿544 
  HORNBLENDE-SCHISTS 
  ETC. 
  OF 
  THE 
  LIZARD. 
  

  

  a 
  specimen 
  in 
  illustration 
  of 
  this. 
  As 
  to 
  whether 
  the 
  explanation 
  

   the 
  Author 
  gave 
  was 
  actually 
  correct, 
  he 
  was 
  doubtful. 
  He 
  did 
  not 
  

   expect 
  to 
  find 
  malacolite 
  in 
  an 
  ordinary 
  basic 
  rock. 
  Moreover, 
  

   though 
  the 
  mineral 
  augite 
  is 
  unstable, 
  he 
  doubted 
  if 
  its 
  position 
  

   was 
  unstable. 
  Although 
  he 
  believed 
  that 
  much 
  of 
  the 
  Lizard 
  

   rock 
  was 
  sedimentary, 
  he 
  was 
  not 
  prepared 
  to 
  accept 
  concentration 
  

   of 
  material 
  into 
  bands 
  as 
  the 
  Author 
  suggested. 
  He 
  felt 
  sure, 
  how- 
  

   ever, 
  that 
  the 
  Society 
  would 
  thank 
  the 
  Author 
  for 
  the 
  very 
  clear 
  

   way 
  in 
  which 
  he 
  had 
  put 
  his 
  facts 
  and 
  views 
  before 
  them, 
  because 
  

   on 
  so 
  difficult 
  a 
  subject 
  all 
  well-considered 
  hypotheses 
  would 
  tend 
  to 
  

   the 
  discovery 
  of 
  truth. 
  

  

  Mr. 
  Etjtley 
  thought 
  that 
  in 
  the 
  case 
  of 
  felspar-crystals 
  lying 
  at 
  

   right 
  angles 
  to 
  the 
  planes 
  of 
  foliation 
  and 
  also 
  in 
  some 
  other 
  cases, 
  

   the 
  Author 
  had 
  brought 
  serious 
  difficulties 
  in 
  the 
  way 
  of 
  those 
  who 
  

   accepted 
  theories 
  of 
  mechanical 
  deformation. 
  In 
  the 
  granulitic 
  

   series 
  there 
  appeared 
  to 
  have 
  been 
  something 
  resembling 
  selective 
  

   foliation. 
  He 
  believed 
  that 
  water 
  did 
  play 
  an 
  important 
  part 
  in 
  the 
  

   production 
  of 
  schists. 
  

  

  Dr. 
  Hicks 
  asked 
  how 
  the 
  Author 
  got 
  rid 
  of 
  all 
  movement 
  in 
  such 
  

   an 
  area 
  as 
  the 
  Lizard. 
  He 
  thought 
  it 
  was 
  far 
  more 
  likely 
  that 
  some 
  

   of 
  the 
  results 
  referred 
  to 
  were 
  due 
  to 
  deposition 
  along 
  lines 
  of 
  cleav- 
  

   age 
  than 
  to 
  sedimentation 
  ; 
  such 
  lines 
  of 
  cleavage 
  showing 
  move- 
  

   ment 
  certainly 
  occurred 
  in 
  this 
  region. 
  He 
  thought 
  the 
  supposed 
  

   granite-vein 
  in 
  the 
  diagram 
  exhibited 
  (fig. 
  11) 
  might 
  possibly 
  be 
  

   due 
  to 
  secondary 
  segregation. 
  

  

  The 
  Author 
  remarked, 
  in 
  answer 
  to 
  Dr. 
  Hicks's 
  observation, 
  that 
  

   the 
  granite 
  was 
  an 
  eruptive 
  vein 
  which 
  had 
  been 
  photographed 
  by 
  

   Mr. 
  Teall, 
  and 
  the 
  eruptive 
  nature 
  of 
  which, 
  he 
  thought, 
  no 
  one 
  

   doubted. 
  The 
  finer 
  parallel 
  streaks 
  he 
  considered 
  to 
  be 
  also 
  

   eruptive. 
  

  

  With 
  reference 
  to 
  what 
  Prof. 
  Bonney 
  said, 
  he 
  did 
  not 
  wish 
  to 
  

   suggest 
  that 
  the 
  augite 
  crystals 
  moved 
  about 
  the 
  rock, 
  but 
  that 
  the 
  

   substance 
  was 
  carried 
  in 
  solution 
  and 
  re-deposited, 
  and 
  this 
  he 
  held 
  

   was 
  proved 
  by 
  the 
  fact 
  that 
  in 
  certain 
  cracks 
  hornblende 
  had 
  been 
  

   deposited 
  from 
  water. 
  Commenting 
  upon 
  the 
  objections 
  raised 
  by 
  

   Dr. 
  Geikie 
  and 
  Mr. 
  Teall, 
  his 
  opposition 
  to 
  the 
  theory 
  of 
  dynamic 
  

   deformation 
  was 
  a 
  protest 
  against 
  every 
  case 
  of 
  foliation 
  being 
  given 
  

   as 
  an 
  instance 
  of 
  dynamic 
  deformation. 
  

  

  