﻿LETTER 
  OF 
  TRANSMITTAL 
  

  

  U. 
  S. 
  Department 
  of 
  Agriculture, 
  

  

  Biological 
  Survey, 
  

   Washington, 
  D. 
  C, 
  May 
  3, 
  1906. 
  

   Sir: 
  I 
  have 
  the 
  honor 
  to 
  transmit 
  herewith 
  for 
  publication 
  as 
  Bul- 
  

   letin 
  No. 
  25 
  of 
  the 
  Biological 
  Survey 
  a 
  report 
  of 
  progress 
  relating 
  to 
  

   the 
  birds 
  that 
  feed 
  on 
  the 
  boll 
  weevil, 
  by 
  Arthur 
  H. 
  Howell. 
  As 
  a 
  

   result 
  of 
  work 
  in 
  1905 
  our 
  knowledge 
  of 
  the 
  part 
  birds 
  play 
  in 
  the 
  

   destruction 
  of 
  the 
  pest 
  has 
  been 
  considerably 
  extended, 
  and 
  several 
  

   additions 
  have 
  been 
  made 
  to 
  the 
  list 
  of 
  species 
  known 
  to 
  prey 
  upon 
  

   the 
  boll 
  weevil. 
  The 
  protection 
  of 
  these 
  by 
  law 
  is 
  earnestly 
  recom- 
  

   mended. 
  

  

  Respectfully, 
  C. 
  Hart 
  Merriam, 
  

  

  Chief, 
  Biological 
  Survey. 
  

   Hon. 
  James 
  Wilson, 
  

  

  Secretary 
  of 
  Agriculture. 
  

  

  