﻿THE 
  METHOD 
  OF 
  MOVEMENT 
  IN 
  MASSES. 
  91 
  

  

  joined 
  by 
  the 
  rest, 
  and, 
  after 
  miserably 
  laying 
  waste 
  their 
  native 
  fields, 
  they 
  proceeded 
  

   elsewhere 
  in 
  large 
  troops. 
  

  

  That 
  tliey 
  will 
  migrate 
  even 
  in 
  small 
  numbers 
  is 
  evident 
  from 
  the 
  

   numerous 
  statements 
  bearing 
  upon 
  this 
  point 
  to 
  be 
  found 
  in 
  the 
  appen- 
  

   dices 
  to 
  our 
  former 
  report. 
  The 
  members 
  of 
  the 
  Commission 
  can 
  all 
  

   bear 
  testimony 
  also 
  to 
  this 
  fact 
  from 
  personal 
  observation. 
  The 
  brood 
  

   of 
  a 
  single 
  female 
  will 
  migrate 
  and 
  even 
  cross 
  over 
  the 
  Bocky 
  Mountain 
  

   Eange 
  without 
  other 
  associates, 
  and 
  during 
  the 
  flying 
  season, 
  on 
  almost 
  

   any 
  clear, 
  warm 
  day, 
  more 
  or 
  less 
  may 
  be 
  seen 
  in* 
  the 
  air 
  moving 
  with 
  

   the 
  wind, 
  sometimes 
  so 
  few 
  and 
  scattering 
  that 
  only 
  here 
  one 
  and 
  there 
  

   one 
  can 
  be 
  seen 
  far 
  up 
  toward 
  the 
  sun 
  by 
  the 
  flash 
  of 
  their 
  silvery 
  

   wings, 
  appearing 
  like 
  floating 
  snow-flakes. 
  

  

  A 
  much 
  stricter 
  discipline 
  (if 
  such 
  a 
  term 
  can 
  be 
  applied 
  to 
  them) 
  

   appears 
  to 
  prevail 
  in 
  the 
  swarms 
  which 
  come 
  from 
  the 
  permanent 
  

   region 
  than 
  in 
  the 
  local 
  flights 
  within 
  the 
  temporary 
  area. 
  

  

  We 
  have 
  assumed 
  throughout 
  our 
  discussion 
  of 
  their 
  flights 
  that 
  they 
  

   move 
  only 
  with 
  the 
  wind 
  when 
  flying 
  in 
  swarms. 
  Although 
  there 
  are 
  

   occasional 
  apparent 
  exceptions 
  to 
  this 
  rule, 
  we 
  think 
  they 
  are 
  only 
  ap- 
  

   parent, 
  and 
  that 
  there 
  are 
  no 
  real 
  exceptions. 
  The 
  facts 
  already 
  given 
  

   show 
  so 
  conclusively 
  that 
  this 
  is 
  the 
  general 
  rule 
  that 
  it 
  is 
  unnecessary 
  

   for 
  us 
  to 
  present 
  further 
  proof 
  now, 
  though 
  we 
  may 
  have 
  something 
  

   more 
  to 
  say 
  when 
  we 
  come 
  to 
  speak 
  of 
  the 
  meteorological 
  influences 
  on 
  

   flights. 
  That 
  no 
  well-attested 
  instance 
  of 
  a 
  swarm 
  flying 
  directly 
  against 
  

   the 
  wind 
  can 
  be 
  shown, 
  we 
  are 
  quite 
  confident; 
  but 
  that 
  they 
  can 
  and 
  

   do 
  occasionally 
  vary 
  their 
  course 
  from 
  the 
  direction 
  of 
  the 
  wind, 
  beating 
  

   around 
  to 
  the 
  right 
  or 
  left, 
  is 
  certainly 
  true. 
  In 
  addition 
  to 
  the 
  one 
  or 
  

   two 
  instances 
  mentioned 
  in 
  our 
  report, 
  we 
  add 
  the 
  following 
  from 
  

   Bowles, 
  191 
  who 
  appears 
  to 
  speak 
  from 
  personal 
  observation 
  : 
  

  

  I 
  have 
  seen 
  a 
  troop 
  of 
  locusts 
  pass 
  through 
  Malaga 
  and 
  enter 
  for 
  a 
  quarter 
  of 
  a 
  

   league 
  over 
  the 
  sea 
  ; 
  but 
  when 
  the 
  people 
  began 
  to 
  take 
  pleasure 
  in 
  the 
  hope 
  that 
  

   they 
  would 
  disappear 
  and 
  be 
  drowned, 
  they 
  gave 
  a 
  sweep 
  toward 
  the 
  left, 
  flew 
  

   straight 
  to 
  the 
  earth, 
  and 
  paused 
  to 
  deposit 
  their 
  eggs. 
  

  

  The 
  following 
  from 
  our 
  correspondents 
  in 
  reference 
  to 
  the 
  movements 
  

   of 
  the 
  Rocky 
  Mountain 
  locusts, 
  and 
  from 
  authors 
  in 
  reference 
  to 
  the 
  

   swarms 
  of 
  the 
  Old 
  World, 
  will 
  probably 
  illustrate 
  their 
  method 
  of 
  move- 
  

   ment 
  in 
  masses 
  better 
  than 
  any 
  explanation 
  we 
  can 
  give. 
  

  

  The 
  following 
  letter 
  from 
  Dr. 
  Child, 
  who 
  acted 
  as 
  local 
  observer 
  for 
  

   us 
  at 
  Plattsmouth, 
  Nebr., 
  from 
  which 
  we 
  have 
  already 
  quoted, 
  is 
  so 
  

   interesting 
  that 
  we 
  give 
  it 
  in 
  full 
  : 
  

  

  Plattsmouth, 
  Cass 
  County, 
  June 
  7, 
  1877. 
  

   1867, 
  July 
  2. 
  — 
  General 
  south 
  to 
  north 
  direction 
  on 
  gentle 
  breeze 
  (signal 
  office 
  nom- 
  

   enclature 
  of 
  winds) 
  from 
  south. 
  First 
  noticed 
  about 
  9 
  a.m.; 
  continued 
  on 
  the 
  3d 
  in 
  

   a 
  heavy 
  body, 
  as 
  also 
  on 
  the 
  4th, 
  until 
  3 
  p. 
  m., 
  when 
  a 
  heavy 
  rain 
  of 
  1.60 
  inches 
  in 
  1-J. 
  

   hours 
  obscured 
  (?) 
  them. 
  A 
  very 
  few 
  were 
  found 
  on 
  the 
  ground 
  after 
  the 
  storm, 
  but 
  

   not 
  .0001 
  of 
  what 
  were 
  seen 
  before 
  the 
  clouds 
  obscured 
  them. 
  What 
  became 
  of 
  them 
  ? 
  

   Frequent 
  observations 
  since 
  have 
  shown 
  that 
  when 
  flying 
  with 
  the 
  wind 
  which 
  brings 
  

  

  >9»Introduz., 
  &c, 
  I.e. 
  

  

  