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  EE.n.A.nNTTz;, 
  

  

  RHENISH 
  MINERAL 
  OFFICE 
  

  

  BONN 
  ON 
  THE 
  RHINE, 
  GERMANY. 
  

   Established 
  1833. 
  

  

  NEW 
  MINERALS. 
  

  

  Andesine, 
  Darapskite, 
  Elpidite, 
  Hintzeite, 
  Hohmannite, 
  Huantayaite, 
  Jod- 
  

   chromate, 
  Knopite, 
  Koninckite, 
  Kylindrite, 
  Lautarite, 
  Lorandite, 
  Lossenite, 
  

   Neptunite, 
  Kichellite, 
  Soda 
  niter, 
  Sulfoborite, 
  Tarapacaite. 
  

  

  NEW 
  CRYSTAL-MODELS 
  IN 
  WOOD. 
  

  

  PeAr 
  o 
  graphic-crystottographic 
  collection 
  of 
  100 
  crystal-models 
  arranged 
  

   according 
  to 
  Professor 
  Dr. 
  H. 
  Eosenbusch's 
  " 
  Mikroskopisclie 
  Physiographie 
  

   der 
  petrographisch 
  wichtigen 
  Mineralien." 
  Ill 
  edition, 
  Stuttgart, 
  1893. 
  

   Price, 
  $25.00. 
  

  

  Collection 
  of 
  50 
  models 
  of 
  distorted 
  and 
  pseudosynimetric 
  forms 
  of 
  crystals, 
  

   arranged 
  by 
  Prof 
  essor 
  Dr. 
  Hirscbwald. 
  Average 
  size, 
  2 
  incbes. 
  Price, 
  $11.25. 
  

  

  Tbis 
  collection 
  contains 
  single 
  crystal-models 
  well 
  appropriate 
  for 
  study 
  

   and 
  practice. 
  Since 
  tbey 
  show 
  equivalent 
  faces 
  in 
  disproportionate 
  distance 
  

   from 
  tbe 
  centre 
  or 
  present 
  a 
  pseudosymmetric 
  cbaracter 
  in 
  tbe 
  relations 
  of 
  

   tbe 
  combination, 
  tbe 
  system 
  can 
  be 
  determined 
  only 
  by 
  means 
  of 
  tbe 
  

   goniometer. 
  

  

  b 
  instruments 
  will 
  be 
  furnished 
  at 
  the 
  rate 
  of 
  65c. 
  (5 
  goniometers, 
  

   5); 
  the 
  models 
  having 
  a 
  size 
  of 
  about 
  2 
  inches, 
  these 
  instruments 
  will 
  

   allow 
  an 
  exactness 
  in 
  measuring 
  of 
  1°. 
  v 
  

  

  THIN 
  SECTIONS, 
  

   For 
  Microscopical 
  investigation. 
  

  

  A. 
  Rocks. 
  Collection 
  of 
  50 
  " 
  Lenne-Porphyres," 
  described 
  by 
  Professor 
  

   Dr. 
  litlgge 
  in 
  " 
  Neues 
  Jahrbnoh 
  t'iir 
  Mineralogie, 
  Beilageband 
  VIII," 
  thin 
  

  

  ■us. 
  Price, 
  $25.00. 
  Coll- 
  ction 
  of 
  25 
  Rocks 
  from 
  the 
  Auvergne 
  with 
  

   thin 
  sections. 
  Price, 
  $15.00. 
  Collection 
  of 
  100 
  Ehenish 
  eruptive 
  rocks 
  and 
  

   of 
  the 
  accompanying 
  tuft's 
  with 
  thin 
  sections 
  and 
  an 
  exact 
  description 
  by 
  Dr. 
  

   \V. 
  Bruhns. 
  Price, 
  $50.00. 
  

  

  B. 
  Minerals. 
  Collection 
  of 
  120 
  properly 
  mounted 
  sections 
  of 
  59 
  mineral- 
  

   ss, 
  in 
  eleganl 
  etui. 
  Price, 
  $ 
  15.00. 
  

  

  C. 
  Fossils. 
  I. 
  Collection 
  of 
  10 
  specimens 
  of 
  Diatoms 
  and 
  Alga?, 
  $2.50 
  

  

  II. 
  " 
  10 
  

  

  MI. 
  •• 
  10 
  

  

  iv. 
  •• 
  10 
  

  

  v. 
  •• 
  in 
  

  

  VI. 
  " 
  ID 
  

  

  VII. 
  • 
  10 
  

  

  VIII. 
  " 
  in 
  

  

  IX. 
  " 
  in 
  

  

  X 
  •• 
  II) 
  

  

  XI. 
  "ID 
  

  

  XII. 
  Large 
  general 
  collection 
  of 
  110 
  thin 
  sections 
  according 
  

   t.. 
  the 
  above 
  arrangement, 
  Price, 
  $82.50. 
  

  

  Single 
  sections 
  will 
  be 
  tarnished 
  at 
  tbe 
  rate 
  of 
  25c. 
  to 
  40c, 
  according 
  to 
  

   tie- 
  difficulty 
  of 
  manufacture. 
  

  

  .\n 
  preparations 
  will 
  be 
  microscopically 
  examined 
  before 
  sending; 
  the 
  

   correctness 
  of 
  the 
  designation 
  is 
  therefore 
  warranted. 
  

  

  New 
  editions 
  of 
  the 
  following 
  lists 
  have 
  just 
  come 
  out: 
  No. 
  I. 
  Minerals 
  

   and 
  plates 
  of 
  minerals 
  for 
  exhibiting 
  optical 
  phenomena, 
  6th 
  edit. 
  No. 
  II. 
  

   Lb 
  and 
  General 
  Geology, 
  Bd 
  edit, 
  (illustrated). 
  No. 
  X. 
  Contact-meta- 
  

   morphosis 
  (price, 
  1 
  2c.) 
  and 
  will 
  be 
  sent 
  on 
  demand. 
  

  

  fossil 
  woods, 
  

  

  3.75 
  

  

  Foraminifera, 
  

  

  3.15 
  

  

  Sponges, 
  

   ( 
  'orals, 
  

  

  3.75 
  

   3.00 
  

  

  Ivhinoderms, 
  

  

  3.00 
  

  

  Worms, 
  

  

  3.00 
  

  

  Brvozoa, 
  

  

  3.00 
  

  

  Braohiopoda, 
  

  

  Mollusks. 
  . 
  

  

  3.00 
  

   3.00 
  

  

  Vertebrates, 
  

  

  3.00 
  

  

  Represented 
  in 
  the 
  United 
  States 
  by 
  Messrs. 
  Eimer 
  & 
  Amend, 
  

   205 
  211 
  Third 
  Avenue, 
  New 
  York. 
  

  

  