﻿ANNIVERSARY 
  ADDRESS 
  OF 
  THE 
  PRESIDENT. 
  53 
  

  

  Russia, 
  Switzerland, 
  France, 
  Italy, 
  Spain 
  and 
  Portugal 
  (combined), 
  

   and 
  Belgium. 
  No 
  Reports 
  had 
  at 
  that 
  time 
  been 
  received 
  from 
  the 
  

   committees 
  formed 
  in 
  Germany, 
  Austria, 
  Great 
  Britain, 
  Scandinavia, 
  

   or 
  the 
  United 
  States. 
  A 
  Report 
  from 
  the 
  English 
  committee 
  was 
  

   received 
  at 
  the 
  Bologna 
  Congress, 
  but 
  was 
  never 
  before 
  the 
  members 
  

   in 
  a 
  printed 
  form. 
  In 
  short, 
  of 
  the 
  fourteen 
  countries 
  represented 
  

   on 
  the 
  international 
  committee, 
  the 
  views 
  of 
  less 
  than 
  one 
  half 
  

   were 
  in 
  the 
  hands 
  of 
  the 
  Secretary 
  when 
  he 
  drew 
  up 
  his 
  General 
  

   Report. 
  

  

  The 
  question 
  of 
  map-coloration 
  was, 
  however, 
  not 
  only 
  important 
  

   but 
  urgent. 
  It 
  is 
  easy 
  to 
  look 
  back 
  now 
  and 
  to 
  see 
  that 
  the 
  

   Bologna 
  Congress 
  would 
  have 
  acted 
  with 
  greater 
  wisdom 
  had 
  it 
  

   postponed 
  several 
  of 
  the 
  questions 
  on 
  which 
  a 
  decision 
  was 
  taken 
  ; 
  

   but 
  it 
  might 
  fairly 
  have 
  been 
  urged 
  on 
  the 
  other 
  hand 
  that 
  the 
  

   crucial 
  experiment 
  of 
  deciding 
  scientific 
  questions 
  by 
  the 
  vote 
  of 
  a 
  

   Congress 
  was 
  worth 
  trying. 
  Failure 
  might 
  have 
  been 
  foreseen 
  ; 
  but 
  

   as 
  there 
  were 
  many 
  believers 
  in 
  the 
  wisdom 
  of 
  majorities, 
  it 
  was 
  

   well 
  that 
  they 
  should 
  have 
  an 
  opportunity 
  of 
  being 
  undeceived. 
  At 
  

   all 
  events 
  a 
  proposal 
  was 
  made 
  by 
  Prof. 
  Renevier 
  to 
  establish 
  a 
  

   colour-scale 
  for 
  geological 
  maps, 
  and 
  it 
  is 
  possible 
  that, 
  had 
  his 
  pro- 
  

   posals 
  been 
  adopted 
  as 
  they 
  stood, 
  the 
  scale 
  would 
  have 
  had 
  a 
  better 
  

   chance 
  of 
  being 
  generally 
  accepted 
  than 
  has 
  that 
  employed 
  in 
  the 
  

   map 
  of 
  Europe. 
  As 
  Professor 
  Renevier's 
  original 
  scheme 
  has 
  been 
  

   to 
  a 
  great 
  extent 
  forgotten, 
  it 
  may 
  be 
  as 
  well 
  to 
  recall 
  it. 
  

  

  The 
  whole 
  of 
  the 
  sedimentary 
  rocks 
  were 
  classed 
  in 
  four 
  " 
  series 
  " 
  

   (this 
  was, 
  of 
  course, 
  before 
  a 
  different 
  signification 
  had 
  been 
  allotted 
  

   to 
  the 
  term), 
  archseic, 
  palaeozoic, 
  mesozoic, 
  and 
  caenozoic 
  ; 
  and 
  each 
  of 
  

   the 
  three 
  latter 
  was 
  divided 
  into 
  three 
  parts, 
  to 
  each 
  of 
  which 
  a 
  

   distinct 
  tint 
  was 
  assigned. 
  It 
  was 
  proposed 
  that 
  recent 
  formations 
  

   should 
  be 
  left 
  white, 
  and 
  that 
  the 
  other 
  sedimentary 
  strata 
  should 
  

   be 
  coloured 
  as 
  in 
  the 
  following 
  list 
  : 
  — 
  

  

  (Pliocene 
  (including 
  Pleistocene). 
  Pale 
  sepia-yellow 
  tinted 
  orange. 
  

   Miocene. 
  Brownish 
  yellow 
  (jaune 
  chamois). 
  

  

  Eocene. 
  Gamboge-yellow. 
  

  

  (Cretaceous. 
  Green. 
  

  

  Jurassic. 
  Blue. 
  

  

  Trias. 
  Brick-red. 
  

  

  [ 
  Permo-carboniferous. 
  Dark 
  grey. 
  

  

  Palaeozoics 
  Devonian. 
  Brown. 
  

  

  | 
  Silurian 
  (including 
  Cambrian). 
  Violet. 
  

  

  Archaic. 
  Pink. 
  

  

  "With 
  regard 
  to 
  igneous 
  rocks 
  no 
  recommendations 
  were 
  made, 
  

  

  