﻿GENERAL 
  REPORT 
  FOR 
  1681. 
  43 
  

  

  or 
  not 
  the 
  difference 
  in 
  climate 
  and 
  vegetation 
  between 
  the 
  permanent 
  

   and 
  temporary 
  home 
  of 
  this 
  insect 
  does 
  not 
  have 
  some 
  influence 
  on 
  it& 
  

   growth 
  and 
  increase, 
  as 
  well 
  as 
  on 
  its 
  adaptation 
  to 
  these 
  diversities. 
  

   The 
  Permanent 
  Eegion, 
  with 
  its 
  comparative 
  sameness 
  of 
  climate 
  season 
  

   after 
  season 
  and 
  year 
  after 
  year, 
  is 
  in 
  unison 
  with 
  this 
  insect's 
  mode 
  of 
  

   life. 
  Hence, 
  when 
  it 
  chances 
  to 
  come 
  into 
  a 
  country 
  that 
  has 
  a 
  variable 
  

   climate 
  these 
  influences 
  begin 
  to 
  count 
  against 
  it. 
  The 
  region 
  tem- 
  

   porarily 
  occupied 
  by 
  C. 
  spretus 
  is 
  one 
  in 
  which 
  there 
  is 
  much 
  rainfall,, 
  

   and 
  which 
  is 
  warmer 
  than 
  its 
  permanent 
  habitat. 
  While 
  the 
  eggs 
  do 
  not 
  

   ai^pear 
  to 
  be 
  deposited 
  earlier 
  in 
  one 
  section 
  than 
  in 
  the 
  other, 
  the 
  con- 
  

   tinuation 
  of 
  the 
  warm 
  weather 
  of 
  autumn 
  in 
  the 
  Temporary 
  Region 
  has 
  a 
  

   tendency 
  to 
  partially 
  hatch 
  these, 
  and 
  the 
  following 
  cold 
  winter 
  weather 
  

   to 
  destroy 
  their 
  vitality. 
  In 
  other 
  words, 
  after 
  the 
  eggs 
  have 
  once 
  be- 
  

   gun 
  hatching 
  the 
  alternate 
  freezing 
  and 
  thawing 
  or 
  cessation 
  of 
  this 
  

   process 
  diminishes 
  their 
  vitality 
  to 
  some 
  extent. 
  Consequently, 
  young- 
  

   hatched 
  in 
  this 
  temporary 
  locality 
  are 
  not 
  as 
  robust 
  and 
  healthy 
  as 
  

   those 
  reared 
  In 
  the 
  Permanent 
  Eegion. 
  A 
  remarkable 
  instance 
  illus- 
  

   trating 
  this 
  was 
  the 
  spring 
  of 
  1877 
  after 
  the 
  open 
  winter 
  previous. 
  In 
  

   speaking 
  of 
  this 
  Professor 
  Samuel 
  Aughey 
  says: 
  

  

  It 
  (tlie 
  locust) 
  cannot 
  long 
  endure 
  a. 
  combiuatioa 
  of 
  low 
  altitudes 
  and 
  moisture,j 
  

   combined 
  with 
  extreme 
  and 
  sudden 
  changes 
  of 
  temperature. 
  Hence, 
  the 
  locust 
  can 
  

   never 
  become 
  localized 
  in 
  Nebraska. 
  The 
  memorable 
  spring 
  of 
  1877 
  is 
  a 
  notable 
  il- 
  

   lustration 
  of 
  this 
  fact. 
  In 
  March 
  and 
  April 
  immense 
  numbers 
  hatched 
  out, 
  and 
  then 
  

   followed 
  cold 
  rains, 
  with 
  sudden 
  alternations 
  of 
  extremes 
  of 
  temperature. 
  Countless 
  

   millions 
  of 
  young 
  locusts 
  died. 
  In 
  many 
  spots 
  where 
  the 
  ground 
  seemed 
  to 
  be 
  covered 
  

   with 
  them, 
  none 
  could 
  be 
  found 
  in 
  a 
  few 
  days. 
  Nothing 
  convinced 
  me 
  that 
  death 
  

   was 
  the 
  cause 
  of 
  their 
  disappearance, 
  until, 
  getting 
  down 
  on 
  my 
  hands 
  and 
  knees 
  

   and 
  examining 
  the 
  ground 
  with 
  a 
  huge 
  magnifying 
  glass, 
  I 
  found 
  their 
  dead 
  carcasses. 
  

   The 
  young 
  brood 
  just 
  hatched 
  out 
  disappeared 
  as 
  if 
  by 
  magic 
  from 
  whole 
  counties. 
  

   The 
  localities 
  where 
  much 
  damage 
  was 
  done 
  were 
  exceedingly 
  few. 
  In 
  fact 
  the 
  brood 
  

   was 
  so 
  impaired 
  constitutionally 
  that 
  it 
  fell 
  an 
  easy 
  victim 
  to 
  the 
  extremes 
  of 
  a 
  moist 
  

   climate 
  in 
  a 
  comparatively 
  low 
  altitude. 
  I 
  also 
  noticed, 
  in 
  previous 
  locust 
  years,. 
  

   that 
  moisture 
  accomx^auied 
  by 
  an 
  extremely 
  hot 
  or 
  cold 
  day, 
  was 
  always 
  fatal 
  to 
  many 
  

   of 
  them. 
  

  

  Numerous 
  instances 
  of 
  like 
  character 
  came 
  under 
  my 
  notice 
  in 
  that 
  

   and 
  other 
  years. 
  

  

  The 
  winged 
  locusts, 
  too, 
  suffer 
  from 
  the 
  effects 
  of 
  change 
  of 
  climate 
  

   which 
  they 
  must 
  undergo 
  in 
  passing 
  from 
  the 
  Permanent 
  to 
  the 
  Tempo- 
  

   rary 
  Region. 
  Quite 
  a 
  number 
  of 
  instances 
  of 
  internal 
  fungoid 
  growths 
  

   have 
  come 
  under 
  my 
  notice 
  within 
  the 
  past 
  twelve 
  years. 
  I 
  have 
  also 
  

   seen 
  large 
  numbers 
  of 
  them 
  die 
  from 
  the 
  effects 
  of 
  what 
  to 
  me 
  ap- 
  

   peared 
  to 
  be 
  some 
  kind 
  of 
  pestilence. 
  When 
  examined 
  with 
  a 
  micro- 
  

   scope 
  nothing 
  unusual 
  could 
  be 
  detected 
  except 
  the 
  peculiarly 
  flabby 
  

   and 
  unhealthy 
  appearance 
  of 
  their 
  muscles 
  and 
  viscera, 
  which 
  were 
  of 
  

   a 
  yellowish 
  color. 
  

  

  Locusts' 
  eggs 
  are 
  so 
  much 
  affected 
  by 
  the 
  warm 
  falls 
  of 
  this 
  region 
  that 
  

   in 
  the 
  following 
  spring 
  they 
  are 
  found 
  to 
  be 
  partially 
  destroyed 
  by 
  semi- 
  

   decomposition. 
  — 
  (Anghey.) 
  Many 
  of 
  them 
  also 
  become 
  attacked 
  by 
  

  

  