﻿Cedar 
  Lake, 
  North 
  Saskatchewan^ 
  Canada. 
  335 
  

  

  The 
  Cedar 
  Lake 
  resin 
  contains 
  more 
  carbon 
  than 
  the 
  amber 
  

   analyzed 
  by 
  Schrotter 
  and 
  less 
  oxygen, 
  and 
  in 
  this 
  respect 
  

   comes 
  nearer 
  to 
  Walchowite 
  and 
  to 
  some 
  of 
  the 
  recent 
  copals 
  

   from 
  India, 
  The 
  relations 
  of 
  some 
  of 
  these 
  bodies 
  will 
  be 
  

   made 
  plain 
  by 
  the 
  following 
  tables 
  : 
  

  

  

  Carbon. 
  

  

  Hydrogen. 
  Oxygen. 
  

  

  Ratio 
  of 
  C, 
  H, 
  

   and 
  O 
  atoms. 
  

  

  Katio 
  of 
  C, 
  H, 
  

   and 
  O 
  atoms, 
  

   taking 
  C=40. 
  

  

  I. 
  

  

  Amber 
  78-82 
  

  

  10-23 
  

   10-41 
  

  

  10-95 
  

   10-34 
  

  

  960: 
  14-95: 
  1 
  

   10-22: 
  16-11: 
  1 
  

  

  40: 
  62-29:4-16 
  

  

  II. 
  

  

  Krantzite 
  79*25 
  

  

  40: 
  63-05: 
  3-91 
  

  

  III. 
  

  

  Cedar 
  Lake 
  Resin 
  80-03 
  

  

  10-47 
  

  

  950 
  

  

  11-23: 
  17-63: 
  1 
  

  

  40:62-79:3-56 
  

  

  IV. 
  

   V. 
  

  

  Copal 
  (Bonibav).. 
  79-70 
  

   Copal 
  (Calcutta),. 
  80-34 
  

  

  10*40 
  

   10-32 
  

  

  9-90 
  

   934? 
  

  

  10-75: 
  16-83:1 
  

   11-46:17-67: 
  1 
  

  

  40: 
  62-62:3-72 
  

   40:61-67:3.49 
  

  

  I. 
  Phillips' 
  Mineralogy 
  (1852), 
  p. 
  630. 
  Anal, 
  by 
  Schrotter. 
  

   II. 
  Dana's 
  Mineralogy 
  (1869), 
  p. 
  741. 
  Anal, 
  by 
  Landolt. 
  IV. 
  

   Watts's 
  Dictionary 
  of 
  Chemistry 
  (ed. 
  i.), 
  vol. 
  ii, 
  p. 
  19. 
  Anal, 
  

   by 
  Filhol. 
  Y. 
  Watts's 
  Dictionary 
  of 
  Chemistry 
  (ed. 
  i), 
  vol. 
  ii, 
  

   p. 
  19. 
  Anal, 
  by 
  Filhol 
  * 
  

  

  Though 
  resembling 
  amber 
  in 
  some 
  of 
  its 
  characters, 
  the 
  

   Cedar 
  Lake 
  resin 
  may 
  here 
  be 
  classed 
  provisionally 
  as 
  "re- 
  

   tinite," 
  on 
  account 
  of 
  its 
  differing 
  from 
  amber 
  in 
  its 
  deport- 
  

   ment 
  with 
  solvents,*!* 
  in 
  not 
  yielding 
  crystals 
  of 
  succinic 
  acid 
  

   on 
  distillation, 
  and 
  in. 
  having 
  a 
  somewhat 
  different 
  ultimate 
  

   composition. 
  The 
  name 
  retinite 
  as 
  used 
  by 
  some 
  mineralogists 
  

   is 
  a 
  convenient 
  general 
  term 
  to 
  include 
  such 
  substances 
  as 
  

   "Walchowite, 
  Krantzite, 
  Jaulingite, 
  Rosthornite 
  and 
  the 
  Cedar 
  

   Lake 
  resin, 
  which 
  last, 
  by 
  way 
  of 
  distinguishing 
  it 
  from 
  other 
  

   retinites, 
  may 
  be 
  called 
  Chemawinite 
  (from 
  Chemahawin 
  or 
  

   Chemayin, 
  the 
  Indian 
  name 
  of 
  a 
  Hudson 
  Bay 
  post, 
  not 
  far 
  

   from 
  where 
  the 
  resin 
  occurs). 
  

  

  Though 
  the 
  origin 
  of 
  this 
  substance 
  is 
  not 
  certainly 
  known, 
  

   there 
  can 
  be 
  little 
  doubt 
  that 
  it 
  has 
  been 
  derived 
  from 
  one 
  of 
  

   the 
  Tertiary 
  or 
  Cretaceous 
  lignites 
  occurring 
  on 
  the 
  Saskatche- 
  

   wan. 
  Some 
  of 
  these 
  are 
  known 
  to 
  contain 
  resins, 
  one 
  of 
  which, 
  

   examined 
  by 
  the 
  writer, 
  was 
  not 
  essentially 
  very 
  different 
  from 
  

   the 
  Cedar 
  Lake 
  material. 
  It 
  behaved 
  similarly 
  on 
  heating, 
  

   had 
  a 
  hardness 
  of 
  over 
  2, 
  a 
  specific 
  gravity 
  of 
  1*066, 
  and 
  dis- 
  

   solved 
  in 
  absolute 
  alcohol 
  to 
  the 
  extent 
  of 
  29*30 
  per 
  cent. 
  

  

  Some 
  of 
  the 
  larger 
  pieces 
  of 
  the 
  Cedar 
  Lake 
  resin 
  might, 
  

   perhaps, 
  be 
  employed 
  for 
  ornamental 
  purposes 
  (beads, 
  etc.), 
  

   and 
  possibly 
  the 
  material 
  might 
  be 
  utilized 
  by 
  the 
  varnish- 
  

   maker. 
  This 
  question 
  will 
  be 
  discussed 
  when 
  the 
  examination 
  

   of 
  the 
  resin 
  is 
  completed. 
  

  

  * 
  In 
  the 
  last 
  analysis, 
  as 
  given 
  by 
  Watts, 
  there 
  is 
  an 
  error. 
  The 
  total 
  is 
  given 
  

   as 
  100. 
  whereas 
  it 
  is 
  really 
  only 
  99-80. 
  It 
  is 
  here 
  assumed 
  that 
  the 
  error 
  is 
  on 
  

   the 
  oxygen 
  — 
  the 
  constituent 
  determined 
  by 
  difference* 
  A 
  similar 
  error 
  occurs 
  in 
  

   Schrotter's 
  analysis 
  of 
  amber, 
  as 
  given 
  by 
  Dana. 
  

  

  f 
  The 
  statements 
  in 
  works 
  on 
  mineralogy 
  with 
  regard 
  to 
  fossil 
  resins 
  are 
  often 
  

   vague 
  and 
  sometimes 
  conflicting. 
  Thus, 
  in 
  speaking 
  of 
  the 
  action 
  of 
  such 
  solvents 
  

   as 
  alcohol 
  or 
  ether, 
  we 
  are 
  told 
  nothing 
  as 
  to 
  the 
  strength 
  of 
  the 
  solvent, 
  the 
  dura- 
  

   tion 
  of 
  its 
  action, 
  etc., 
  and 
  the 
  results 
  given 
  are, 
  therefore, 
  often 
  of 
  little 
  value. 
  

  

  