﻿430 
  Dr. 
  H. 
  Eltringham 
  on 
  the 
  Histology 
  of 
  the 
  Scent-organs 
  

  

  figure 
  may 
  not 
  really 
  represent 
  the 
  true 
  magnification, 
  but 
  

   a 
  mere 
  expansion 
  of 
  the 
  view 
  obtained 
  with 
  the 
  objective 
  

   used. 
  A 
  photograph 
  of 
  a 
  section 
  measuring 
  two 
  inches 
  

   across 
  may 
  represent 
  a 
  magnification 
  of 
  a 
  hundred 
  dia- 
  

   meters, 
  but 
  the 
  same 
  photograph 
  projected 
  on 
  a 
  six-foot 
  

   screen 
  is 
  not 
  a 
  magnification 
  of 
  three 
  thousand 
  six 
  hundred 
  

   diameters, 
  but 
  merely 
  an 
  enlarged 
  view 
  of 
  what 
  can 
  be 
  

   seen 
  in 
  the 
  original 
  photograph. 
  

  

  I 
  have 
  already 
  expressed 
  my 
  thanks 
  to 
  Mr. 
  Moselv 
  for 
  

   having 
  supplied 
  the 
  material 
  for 
  this 
  investigation, 
  and 
  I 
  

   would 
  add 
  that 
  he 
  has 
  further 
  assisted 
  by 
  visiting 
  Oxford 
  

   on 
  several 
  occasions 
  to 
  compare 
  the 
  results 
  with 
  his 
  previous 
  

   knowledge 
  of 
  the 
  species. 
  

  

  Explanation 
  of 
  Plate 
  XXII. 
  

  

  [See 
  Explanation 
  facing 
  the 
  Plate.] 
  

  

  