﻿470 
  Scientific 
  Intelligence. 
  

  

  of 
  bulletins 
  published 
  by 
  the 
  Georgia 
  Survey 
  is 
  this 
  pamphlet 
  on 
  

   the 
  clays. 
  It 
  is 
  a 
  subject 
  of 
  great 
  practical 
  interest, 
  and 
  the 
  in- 
  

   formation 
  brought 
  together 
  here 
  will 
  doublless 
  prove 
  interesting 
  

   to 
  all 
  concerned. 
  The 
  opening 
  pages 
  give 
  an 
  account 
  of 
  the 
  

   properties 
  of 
  clays, 
  their 
  behavior 
  with 
  res))ect 
  to 
  water, 
  heat, 
  

   etc., 
  and 
  also 
  methods 
  of 
  testing 
  them. 
  P^ollowing 
  this 
  is 
  an 
  

   account 
  of 
  some 
  of 
  the 
  special 
  localities 
  at 
  which 
  valuable 
  clays 
  

   occur, 
  particularly 
  in 
  the 
  southern 
  ])art 
  of 
  the 
  state, 
  with 
  the 
  

   results 
  of 
  cherfiical 
  analyses 
  and 
  physical 
  tests. 
  

  

  11. 
  A 
  proposed 
  International 
  Journal 
  of 
  Petrology. 
  (Com- 
  

   municated.) 
  — 
  The 
  Committee 
  appointed 
  by 
  the 
  Seventh 
  Inter- 
  

   national 
  Congress 
  of 
  Geologists 
  to 
  consider 
  plans 
  for 
  the 
  

   establishment 
  of 
  an 
  International 
  Journal 
  of 
  Petrology 
  has 
  

   chosen 
  Professor 
  F. 
  Becke 
  of 
  Vienna, 
  well 
  known 
  as 
  the 
  editor 
  of 
  

   Tschermak's 
  Mittheilungen, 
  President 
  ot 
  the 
  Committee, 
  and 
  has 
  

   taken 
  the 
  first 
  steps 
  toward 
  the 
  organization 
  of 
  such 
  a 
  journal. 
  

   It 
  has 
  been 
  proposed 
  that 
  articles 
  appearing 
  in 
  it 
  shall 
  be 
  printed 
  

   in 
  French, 
  German 
  or 
  English 
  at 
  the 
  option 
  of 
  the 
  author. 
  

  

  While 
  primarily 
  intended 
  for 
  the 
  publication 
  of 
  reviews 
  and 
  

   abstracts 
  of 
  all 
  petrographical 
  papers 
  wherever 
  published, 
  it 
  is 
  

   suggested 
  that 
  it 
  may 
  include 
  also 
  articles 
  which 
  shall 
  appear 
  in 
  

   it 
  for 
  the 
  first 
  time. 
  The 
  carrying 
  out 
  of 
  this 
  must 
  depend 
  upon 
  

   the 
  financial 
  support 
  the 
  journal 
  receives. 
  

  

  The 
  journal 
  is 
  to 
  be 
  managed 
  by 
  a 
  committee 
  appointed 
  by 
  the 
  

   International 
  Congress 
  of 
  Geologists, 
  the 
  committee 
  to 
  select 
  an 
  

   editor 
  who 
  shall 
  have 
  two 
  assistants; 
  the 
  editor 
  and 
  assistants 
  to 
  

   receive 
  salaries 
  for 
  their 
  services. 
  

  

  The 
  desirability 
  of 
  having 
  one 
  source, 
  thoroughly 
  up 
  to 
  date, 
  

   to 
  which 
  to 
  turn 
  lor 
  information 
  concerning 
  all 
  matters 
  published 
  

   on 
  petrology 
  is 
  self-evident 
  to 
  all 
  attempting 
  to 
  keep 
  abreast 
  with 
  

   the 
  rapid 
  advance 
  of 
  this 
  science. 
  One 
  has 
  only 
  to 
  observe 
  what 
  

   a 
  great 
  impulse 
  to 
  the 
  science 
  of 
  mineralogy 
  has 
  been 
  given 
  by 
  

   the 
  establishment 
  of 
  Groth's 
  Zeitschrift 
  fur 
  Krystallographie, 
  to 
  

   be 
  convinced 
  of 
  the 
  usefulness 
  and 
  convenience 
  of 
  such 
  a 
  journal. 
  

  

  The 
  necessity 
  of 
  forecasting 
  as 
  correctly 
  as 
  possible 
  the 
  financial 
  

   support 
  obtainable 
  for 
  such 
  a 
  journal 
  has 
  suggested 
  to 
  the 
  Ameri- 
  

   can 
  members 
  of 
  the 
  committee 
  the 
  ))lan 
  of 
  calling 
  attention 
  to 
  

   the 
  enterprise 
  and 
  of 
  inviting 
  all 
  interested 
  in 
  its 
  success 
  to 
  com- 
  

   municate 
  to 
  either 
  of 
  them 
  such 
  suggestions 
  or 
  information 
  as 
  

   may 
  aid 
  in 
  estimating 
  the 
  amount 
  of 
  annual 
  subscriptions 
  or 
  con- 
  

   tributions 
  that 
  may 
  be 
  obtained 
  from 
  this 
  country. 
  

  

  It 
  is 
  expected 
  that 
  the 
  chief 
  support 
  will 
  come 
  from 
  individual 
  

   subscriptions 
  and 
  from 
  university 
  and 
  public 
  libraries, 
  but 
  it 
  may 
  

   be 
  possible 
  to 
  obtain 
  assistance, 
  in 
  the 
  first 
  years 
  of 
  the 
  undertak- 
  

   ing 
  at 
  least, 
  from 
  other 
  sources. 
  

  

  J. 
  P. 
  Iddings*, 
  

  

  L. 
  V. 
  PiKSSON, 
  

  

  Members 
  of 
  the 
  (Jonimitteefor 
  America, 
  

  

  