﻿THE 
  USE 
  OF 
  THE 
  STEREOGRAM 
  IN 
  PALEOBIOLOGY 
  

  

  BY 
  GEORGE 
  H. 
  HUDSON 
  

  

  The 
  earliest 
  form 
  of 
  the 
  stereoscope 
  was 
  devised 
  by 
  Sir 
  Charles 
  

   Wheatstone 
  to 
  illustrate 
  the 
  phemomena 
  of 
  binocular 
  vision. 
  This 
  

   instrument 
  was 
  made 
  known 
  in 
  1838 
  and 
  very 
  simple 
  line 
  stereo- 
  

   grams 
  were 
  drawn 
  to 
  accompany 
  it. 
  By 
  a 
  curious 
  coincidence 
  

   Daguerre 
  succeeded 
  in 
  perfecting 
  his 
  photographic 
  process 
  dur- 
  

   ing 
  the 
  same 
  year 
  and 
  thus 
  opened 
  the 
  way 
  to 
  the 
  production 
  of 
  

   stereograms 
  which 
  would 
  possess 
  something 
  more 
  than 
  a 
  purely 
  

   theoretical 
  interest. 
  Thus 
  the 
  stereoscope 
  and 
  the 
  rather 
  bulky 
  

   and 
  clumsy 
  form 
  of 
  mounted 
  stereogram 
  developed 
  together 
  and 
  

   the 
  former 
  became 
  specialized 
  or 
  adapted 
  for 
  use 
  with 
  the 
  latter 
  

   only. 
  

  

  In 
  these 
  days 
  of 
  cheap 
  and 
  excellent 
  methods 
  of 
  reproducing 
  

   photographs 
  there 
  is 
  no 
  valid 
  reason 
  why 
  stereograms 
  should 
  

   not 
  be 
  printed 
  and 
  bound 
  together 
  with 
  descriptive 
  text 
  in 
  book 
  

   form. 
  This 
  would 
  only 
  be 
  a 
  step 
  in 
  the 
  direction 
  of 
  " 
  scientific 
  

   management." 
  It 
  would 
  save 
  time 
  now 
  lost 
  in 
  keeping 
  the 
  loose 
  

   stereograms 
  in 
  order, 
  in 
  finding 
  the 
  one 
  desired 
  and 
  in 
  replacing 
  

   it 
  after 
  use. 
  It 
  would 
  insure 
  against 
  loss 
  and 
  damage. 
  It 
  would 
  

   open 
  avenues 
  for 
  use 
  now 
  unfortunately 
  closed. 
  Stereograms 
  

   could 
  be 
  made 
  to 
  illustrate 
  books 
  of 
  travel, 
  textbooks, 
  scientific 
  

   papers 
  and 
  popular 
  magazine 
  articles 
  dealing 
  with 
  the 
  world 
  and 
  

   its 
  workers 
  in 
  all 
  spheres 
  of 
  human 
  activity 
  from 
  the 
  mine 
  to 
  the 
  

   stage. 
  To 
  open 
  this 
  new 
  field 
  we 
  need 
  only 
  a 
  stereoscope 
  that 
  

   shall 
  rest 
  on 
  the 
  page 
  while 
  being 
  focused 
  or 
  adjusted. 
  

  

  This 
  article 
  has 
  beer 
  prepared 
  to 
  demonstrate 
  the 
  desirability 
  

   of 
  using 
  stereograms 
  to 
  illustrate 
  scientific 
  papers. 
  The 
  field 
  

   chosen 
  lies 
  both 
  in 
  biology 
  and 
  paleontology. 
  The 
  illustrations 
  

   are 
  confined 
  to 
  a 
  few 
  species 
  of 
  sea 
  stars 
  but 
  both 
  recent 
  and 
  fos- 
  

   sil 
  forms 
  are 
  represented. 
  

  

  103 
  

  

  