﻿186 
  CONTAGIOUS 
  DISEASES 
  OF 
  THE 
  CHINCH-BUG. 
  

  

  by 
  cold 
  and 
  dry 
  winters; 
  that 
  the 
  bug 
  seasons 
  of 
  1889 
  (no 
  bugs) 
  and 
  1891 
  

   (bugs) 
  were 
  preceded 
  by 
  wet 
  and 
  slightly 
  warm 
  or 
  "moist 
  and 
  open" 
  winters. 
  

   Dr. 
  Riley 
  has 
  stated 
  his 
  belief 
  that 
  a 
  moist 
  and 
  open 
  winter 
  prevents 
  a 
  chinch- 
  

   bug 
  outbreak 
  during 
  the 
  following 
  season. 
  The 
  bug 
  season 
  of 
  1890, 
  a 
  year 
  

   of 
  no 
  bugs, 
  was 
  preceded 
  by 
  a 
  warm 
  and 
  dry 
  winter. 
  

  

  Considering, 
  finally, 
  the 
  influence 
  of 
  the 
  moisture 
  and 
  temperature 
  of 
  the 
  

   immediate 
  season 
  on 
  the 
  chinch-bug, 
  we 
  find, 
  that 
  in 
  1884, 
  1885, 
  and 
  1889, 
  

   years 
  of 
  no 
  bugs, 
  the 
  moisture 
  of 
  each 
  year, 
  and 
  of 
  April, 
  May, 
  June 
  and 
  July 
  

   (grouped) 
  of 
  each 
  year, 
  was 
  above 
  the 
  average, 
  and 
  the 
  temperature 
  of 
  April, 
  

   May, 
  June 
  and 
  July 
  (grouped 
  ) 
  of 
  each 
  year 
  was 
  below, 
  or 
  at 
  least 
  not 
  above, 
  

   the 
  average 
  ; 
  but, 
  similarly, 
  1891, 
  a 
  year 
  of 
  many 
  bugs, 
  was 
  exceptionally 
  wet, 
  

   both 
  as 
  to 
  whole 
  year 
  and 
  as 
  to 
  April, 
  May, 
  June, 
  and 
  July 
  (grouped), 
  and 
  

   the 
  temperature 
  of 
  these 
  months 
  was 
  not 
  above 
  the 
  average. 
  And 
  in 
  1888, 
  a 
  

   year 
  of 
  bugs, 
  the 
  moisture 
  for 
  the 
  whole 
  year 
  was 
  slightly 
  above 
  the 
  average, 
  

   although 
  the 
  moisture 
  for 
  April, 
  May, 
  June 
  and 
  July 
  (grouped 
  ) 
  was 
  only 
  

   average. 
  The 
  temperature 
  of 
  these 
  months 
  was 
  average. 
  

  

  In 
  1886, 
  1887, 
  and 
  1890, 
  the 
  moisture 
  for 
  both 
  the 
  whole 
  year 
  and 
  for 
  April, 
  

   May, 
  June 
  and 
  July 
  (grouped 
  ) 
  was 
  below 
  the 
  average, 
  and 
  the 
  temperature 
  

   for 
  April, 
  May, 
  June 
  and 
  July 
  (grouped 
  ) 
  was 
  above 
  the 
  average, 
  or 
  at 
  least 
  

   not 
  below 
  it; 
  but 
  1886 
  and 
  1887 
  were 
  chinch-bug 
  years, 
  while 
  1890, 
  in 
  which 
  

   April, 
  May, 
  June 
  and 
  July 
  (grouped 
  ) 
  were 
  " 
  very 
  dry," 
  was 
  a 
  year 
  of 
  no 
  bugs. 
  

  

  There 
  seems 
  to 
  be, 
  in 
  fact, 
  no 
  uniformity 
  in 
  the 
  influence 
  ( 
  if 
  such 
  there 
  really 
  

   is 
  in 
  any 
  considerable 
  degree) 
  which 
  meteorological 
  conditions 
  have 
  exerted 
  on 
  

   the 
  chinch-bug 
  in 
  Kansas. 
  I 
  have 
  been 
  unable 
  to 
  combine, 
  in 
  any 
  way, 
  the 
  

   various 
  wet-and-dry-weather 
  and 
  low-and-high-temperature 
  conditions 
  which 
  

   have 
  obtained 
  in 
  Kansas 
  during 
  the 
  pas* 
  10 
  years 
  so 
  as 
  to 
  afford 
  a 
  basis 
  for 
  

   prediction 
  of 
  chinch-bug 
  injury 
  or 
  freedom 
  from 
  it. 
  

  

  With 
  regard 
  to 
  the 
  immediate 
  and 
  local 
  influence 
  of 
  wet 
  weather 
  on 
  the 
  

   chinch-bug, 
  I 
  have 
  carefully 
  noted 
  all 
  pertinent 
  weather 
  references 
  by 
  my 
  

   farmer 
  correspondents. 
  For 
  convenience 
  sake 
  I 
  shall 
  refer 
  to 
  each 
  report 
  

   from 
  which 
  extract 
  is 
  taken 
  or 
  to 
  which 
  reference 
  is 
  made 
  by 
  a 
  number 
  given 
  

   it 
  as 
  one 
  of 
  a 
  regular 
  series. 
  (See 
  pp. 
  36 
  to 
  131.) 
  Thus 
  each 
  weather 
  reference, 
  

   while 
  presented 
  in 
  the 
  present 
  discussion 
  by 
  itself, 
  may 
  easily 
  be 
  reafl 
  in 
  con- 
  

   nection 
  with 
  the 
  remaining 
  context 
  of 
  the 
  report 
  from 
  which 
  it 
  is 
  taken, 
  if 
  it 
  

   is 
  thought 
  any 
  light 
  may 
  be 
  thrown 
  on 
  it 
  by 
  the 
  collateral 
  matter 
  of 
  the 
  re- 
  

   port. 
  I 
  note 
  the 
  following 
  references 
  : 
  

  

  Report 
  No. 
  18. 
  — 
  Correspondent 
  writing 
  May 
  3 
  says: 
  "Bugs 
  are 
  very 
  thick, 
  and 
  

   unless 
  something 
  is 
  done 
  they 
  will 
  take 
  the 
  wheat 
  and 
  oats." 
  Writing 
  June 
  23, 
  cor- 
  

   respondent 
  says: 
  "The 
  rain 
  has 
  not 
  affected 
  them.*' 
  

  

  Report 
  No. 
  28. 
  — 
  Correspondent 
  writing 
  May 
  28 
  says: 
  "The 
  young 
  crop 
  [of 
  bugs] 
  

   is 
  coming 
  on 
  thick." 
  Writing 
  November 
  2, 
  correspondent 
  says: 
  "I 
  turned 
  the 
  in- 
  

   fected 
  bugs 
  into 
  my 
  wheat 
  field, 
  the 
  weather 
  being 
  unfavorable, 
  raining 
  all 
  the 
  time. 
  

   In 
  from 
  four 
  to 
  six 
  days 
  the 
  bugs 
  began 
  to 
  die. 
  Their 
  appearance 
  was 
  exactly 
  like 
  

   the 
  ones 
  you 
  sent 
  me 
  — 
  mouldy." 
  

  

  Rejiort 
  No. 
  29. 
  — 
  Correspondent 
  writing 
  June 
  27 
  says: 
  "Chinch-bugs 
  are 
  coming 
  

  

  