﻿-±92 
  Scientific 
  Intelligence. 
  . 
  

  

  56, 
  64 
  pis., 
  7 
  figs. 
  — 
  During 
  three 
  field 
  seasons 
  Dr. 
  Kindle 
  has 
  

   studied 
  and 
  mapped 
  and 
  measured 
  ripple-marks 
  in 
  shallow 
  water, 
  

   deep 
  water 
  in 
  lakes 
  and 
  rivers 
  and 
  ocean 
  bays, 
  and 
  in 
  wind-laid 
  

   materials. 
  These 
  ripple-marks 
  are 
  classified 
  and 
  the 
  origin 
  of 
  

   the 
  various 
  types 
  is 
  explained. 
  The 
  results 
  constitute 
  a 
  contribu- 
  

   tion 
  of 
  high 
  value 
  for 
  the 
  interpretation 
  of 
  the 
  physiography 
  of 
  

   ancient 
  sedimentary 
  formations. 
  The 
  significance 
  of 
  fossil 
  ripples 
  

   in 
  different 
  geologic 
  formations, 
  the 
  distinction 
  between 
  ripples 
  

   in 
  marine 
  and 
  lacustrine 
  sediments, 
  and 
  the 
  relation 
  of 
  ripples 
  to 
  

   ancient 
  shore 
  lines 
  are 
  discussed. 
  Numerous 
  references 
  to 
  the 
  

   literature 
  and 
  the 
  64 
  photographic 
  figures 
  increase 
  the 
  value 
  of 
  

   this 
  helpful 
  study. 
  h. 
  e. 
  g. 
  

  

  8. 
  The 
  State 
  of 
  the 
  Ice 
  in 
  the 
  Arctic 
  Seas; 
  by 
  C. 
  I. 
  H. 
  

   Speerschneider. 
  — 
  Two 
  special 
  prints, 
  Nautical 
  Meteorological 
  

   Annual, 
  Danish 
  Meteorological 
  Institute, 
  1916, 
  19! 
  7. 
  Pp. 
  16, 
  

   5 
  maps 
  and 
  pp. 
  25, 
  5 
  maps, 
  resp. 
  — 
  The 
  position 
  and 
  character 
  of 
  

   ice 
  in 
  the 
  arctic 
  seas 
  during 
  the 
  months 
  April, 
  May, 
  June, 
  July, 
  

   August, 
  1916, 
  have 
  been 
  described 
  and 
  mapped 
  by 
  Commander 
  

   C. 
  I. 
  II. 
  Speerschneider. 
  In 
  a 
  separate 
  publication 
  the 
  records 
  of 
  

   observations 
  for 
  the 
  period 
  1898-1913 
  are 
  summarized 
  and 
  

   charts 
  constructed 
  to 
  show 
  the 
  average 
  position 
  of 
  the 
  ice, 
  the 
  

   outer 
  limit 
  of 
  the 
  ice 
  drift, 
  and 
  the 
  relation 
  of 
  the 
  inner 
  edge 
  to 
  

   the 
  shore. 
  The 
  maximum 
  and 
  minimum 
  ice 
  limits 
  for 
  the 
  

   months 
  are 
  indicated. 
  The 
  period 
  1898-1904 
  records 
  the 
  least 
  

   ice, 
  and 
  the 
  ice-covered 
  area 
  in 
  1904 
  was 
  the 
  smallest 
  since 
  1877. 
  

   For 
  Barents 
  Sea 
  the 
  lowest 
  figures 
  are 
  those 
  for 
  1898, 
  1904, 
  and 
  

   1905. 
  It 
  is 
  worthy 
  of 
  note 
  that 
  1903-5 
  was 
  a 
  period 
  of 
  maxi- 
  

   mum 
  sun 
  spots. 
  H. 
  E. 
  G. 
  

  

  9. 
  Annual 
  Heport 
  of 
  the 
  Government 
  Geologist 
  of 
  South 
  

   Australia 
  for 
  1915 
  ; 
  by 
  L. 
  Keith 
  Ward, 
  Government 
  Geologist. 
  

   Pp. 
  18, 
  2 
  figs. 
  — 
  During 
  1915 
  the 
  two 
  geologists 
  constituting 
  the 
  

   staff 
  of 
  the 
  South 
  Australian 
  Survey 
  were 
  engaged 
  chiefly 
  in 
  

   reporting 
  on 
  mineral 
  deposits 
  and 
  water 
  supplies 
  in 
  many 
  and 
  

   widely 
  separated 
  localities. 
  The 
  Government 
  Geologist 
  calls 
  

   attention 
  to 
  the 
  need 
  of 
  a 
  comprehensive 
  study 
  of 
  the 
  mineral 
  

   resources 
  of 
  the 
  State 
  and 
  of 
  the 
  appointment 
  of 
  an 
  officer 
  

   charged 
  with 
  investigation 
  of 
  water 
  supplies. 
  The 
  discovery 
  of 
  

   precious 
  opal 
  at 
  Stuart's 
  Range 
  is 
  announced, 
  and 
  short 
  papers 
  

   on 
  drainage 
  of 
  Dismal 
  Swamp 
  by 
  natural 
  underground 
  channels, 
  

   on 
  subartesian 
  water 
  at 
  Mallala, 
  on 
  ground 
  water 
  at 
  Payneham, 
  

   aud 
  on 
  building 
  stones 
  are 
  presented. 
  h. 
  e. 
  g. 
  

  

  10. 
  The 
  Efficient 
  Purchase 
  and 
  Utilization 
  of 
  Mine 
  Supplies; 
  

   by 
  Hubert 
  N. 
  Stronck 
  and 
  John 
  R. 
  Billy 
  ard. 
  Pp. 
  97. 
  New 
  

   York 
  (John 
  Wiley 
  & 
  Sons, 
  Inc.). 
  — 
  In 
  this 
  time 
  when 
  economy 
  

   and 
  efficiency 
  are 
  being 
  demanded, 
  it 
  is 
  well 
  that 
  the 
  stores 
  

   department 
  of 
  the 
  industries 
  devoted 
  to 
  mining 
  and 
  smelting 
  

   should 
  be 
  especially 
  discussed. 
  The 
  expense 
  involved 
  is 
  neces- 
  

   sarily 
  large, 
  and 
  as 
  those 
  trained 
  for 
  mining 
  have 
  often 
  no 
  special 
  

   business 
  knowledge, 
  considerable 
  waste 
  may 
  occur. 
  This 
  brief 
  

   but 
  careful 
  presentation 
  of 
  the 
  subject 
  with 
  many 
  useful 
  and 
  

   practical 
  suggestions, 
  should 
  be 
  of 
  value 
  to 
  those 
  concerned. 
  

  

  