﻿27 
  

  

  reference 
  to 
  the 
  occurrence 
  of 
  contagious 
  disease 
  among 
  these 
  

   grubs. 
  A 
  third 
  trip 
  was 
  made 
  October 
  5 
  by 
  Mr. 
  W. 
  G. 
  Johnson, 
  

   one 
  of 
  my 
  entomological 
  Assistants, 
  his 
  special 
  errand 
  being 
  a 
  study 
  

   of 
  the 
  situation 
  with 
  reference 
  to 
  the 
  crops, 
  soil, 
  surroundings, 
  and 
  

   agricultural 
  history 
  of 
  the 
  fields 
  worst 
  injured. 
  Both 
  Mr. 
  Duggar 
  

   and 
  Mr. 
  Johnson 
  were 
  particularly 
  charged 
  to 
  make 
  observations 
  

   upon 
  the 
  relation 
  of 
  the 
  white 
  grubs 
  to 
  clover 
  sod, 
  the 
  opinion 
  being 
  

   quite 
  prevalent 
  both 
  among 
  farmers 
  and 
  economic 
  entomologists 
  

   that 
  the 
  clover 
  plant 
  is 
  but 
  little 
  liable 
  to 
  injury 
  by 
  grubs, 
  and 
  that 
  

   it 
  oflPers 
  but 
  little 
  attraction 
  to 
  the 
  adult 
  beetle 
  in 
  search 
  of 
  a 
  place 
  

   of 
  deposit 
  for 
  her 
  eggs. 
  

  

  In 
  November 
  a 
  blank 
  was 
  distributed, 
  as 
  already 
  mentioned, 
  and 
  

   as 
  shown 
  on 
  page 
  28, 
  with 
  a 
  circular 
  request 
  for 
  full 
  and 
  precise 
  in- 
  

   formation 
  with 
  respect 
  to 
  the 
  history 
  of 
  infested 
  fields 
  from 
  1<S91 
  to 
  

   1895. 
  

  

  The 
  information 
  obtained 
  by 
  means 
  of 
  this 
  blank 
  is 
  exhibited 
  in 
  

   summary 
  form 
  in 
  the 
  "outlines" 
  following, 
  on 
  pages 
  29 
  and 
  30. 
  

  

  