﻿109 
  

  

  cause 
  of 
  this 
  economic 
  importance 
  of 
  the 
  subject 
  that 
  I 
  have 
  thought 
  

   it 
  worth 
  while 
  to 
  place 
  on 
  record 
  the 
  imj^erfect 
  data 
  here 
  given, 
  in 
  

   the 
  hope 
  that 
  they 
  may 
  call 
  attention 
  in 
  future 
  to 
  phenomena 
  

   of 
  this 
  class, 
  and 
  that 
  they 
  may 
  serve 
  as 
  a 
  means 
  for 
  the 
  early 
  identi- 
  

   fication 
  of 
  this 
  disease 
  in 
  some 
  case 
  where 
  experimental 
  tests- 
  

   and 
  economic 
  apjilications 
  may 
  perhaps 
  be 
  practicable. 
  

  

  