﻿714 
  REPORT 
  UNITED 
  STATES 
  GEOLOGICAL 
  SURVEY. 
  

  

  very 
  distinct 
  ; 
  they 
  have 
  a 
  proboscis, 
  which 
  has 
  three 
  or 
  four 
  joints, 
  which 
  

   they 
  contract 
  or 
  extend 
  like 
  an 
  opera-glass. 
  From 
  the 
  head, 
  which 
  is 
  

   somewhat 
  roundish, 
  they 
  taper 
  gradually 
  off 
  toward 
  the 
  tail, 
  which 
  is 
  

   scarcely 
  half 
  the 
  diameter 
  of 
  the 
  middle 
  of 
  their 
  body, 
  and 
  ends 
  in 
  an 
  

   obtuse, 
  claw-like 
  point. 
  At 
  a 
  short 
  distance 
  from 
  the 
  end 
  of 
  the 
  tail 
  is 
  

   an 
  orifice 
  surrounded 
  by 
  an 
  elevated 
  fleshy 
  edge 
  ; 
  from 
  this 
  orifice 
  tlie 
  

   worms 
  discharge 
  their 
  eggs. 
  The 
  back 
  of 
  these 
  old 
  worms 
  is 
  nearly 
  

   opaque, 
  and 
  appears 
  jointed 
  or 
  annular 
  ; 
  the 
  number 
  of 
  joints 
  or 
  rings 
  

   is 
  from 
  twenty-five 
  to 
  thirty. 
  The 
  belly-side 
  is 
  more 
  transparent, 
  and 
  

   strings 
  of 
  ova 
  can 
  be 
  distinctly 
  seen 
  through 
  almost 
  the 
  whole 
  length 
  

   of 
  the 
  worm 
  to 
  the 
  orifice 
  by 
  which 
  the 
  eggs 
  are 
  discharged." 
  Those 
  .! 
  

   in 
  the 
  cavities 
  of 
  the 
  mature 
  grain 
  are 
  generally 
  Jj 
  or 
  Jg 
  inch 
  long, 
  | 
  

   milk-white, 
  and 
  semi-transparent. 
  After 
  laying 
  all 
  their 
  eggs 
  the 
  ' 
  

   parent 
  worms 
  soon 
  die, 
  and 
  in 
  a 
  few 
  days 
  they 
  decay 
  and 
  fall 
  to 
  pieces; 
  

   but 
  such 
  is 
  not 
  the 
  case 
  at 
  an 
  earlier 
  period 
  of 
  life, 
  for 
  after 
  being 
  dried, 
  

   and 
  appearing 
  quite 
  dead, 
  on 
  the 
  application 
  of 
  moisture 
  they 
  become 
  ' 
  

   as 
  lively 
  as 
  they 
  were 
  at 
  first, 
  and 
  thus 
  for 
  five 
  years 
  and 
  eight 
  

   months 
  Mr. 
  Bauer 
  was 
  able 
  to 
  re-animate 
  the 
  worms 
  by 
  immersion, 
  

   but 
  it 
  required 
  a 
  longer 
  period 
  as 
  the 
  time 
  lengthened, 
  and 
  after 
  that 
  

   they 
  died 
  ; 
  other 
  examples 
  bred 
  by 
  him 
  retained 
  their 
  reviviscent 
  qual- 
  

   ities 
  for 
  six 
  years 
  and 
  one 
  month. 
  It 
  seems 
  probable 
  that 
  the 
  glutinous 
  

   substance 
  in 
  which 
  they 
  are 
  enveloped 
  preserves 
  their 
  vitality. 
  They 
  , 
  

   may 
  be 
  kept 
  alive 
  for 
  three 
  months 
  in 
  water. 
  

  

  "It 
  appears 
  from 
  Mr. 
  Bauer's 
  investigations 
  that 
  the 
  cavities 
  of 
  the 
  ^■ 
  

   grain 
  are 
  at 
  first 
  filled 
  with 
  a 
  white 
  fibrous 
  substance, 
  formed 
  by 
  gluten 
  |'i 
  

   into 
  balls 
  of 
  a 
  silky 
  nature. 
  In 
  water 
  they 
  instantly 
  dissolve, 
  and 
  ex- 
  ■ 
  

   hibit 
  hundreds 
  of 
  minute 
  worms, 
  which 
  become 
  animated 
  in 
  less 
  than 
  a 
  

   quarter 
  of 
  an 
  hour 
  when 
  moistened, 
  and 
  the 
  grains 
  eventually 
  assumed 
  

   a 
  dark-brown 
  color, 
  and 
  were 
  as 
  hard 
  as 
  wood." 
  

  

  In 
  some 
  grains 
  approaching 
  maturity 
  only 
  one 
  worm 
  was 
  found 
  with 
  

   the 
  cluster 
  of 
  eggs, 
  in 
  others 
  there 
  were 
  three 
  (Fig. 
  8), 
  the 
  section 
  of 
  a 
  

   grain 
  exhibiting 
  some 
  worms 
  and 
  multitudes 
  of 
  eggs. 
  The 
  eggs 
  come 
  {ji 
  

   forth 
  in 
  strings 
  of 
  five 
  or 
  six 
  together, 
  and 
  are 
  detached 
  in 
  water; 
  the 
  

   young 
  worms 
  can 
  then 
  be 
  seen 
  through 
  the 
  transparent 
  skin. 
  (Fig. 
  8.) 
  

   In 
  about 
  an 
  hour 
  and 
  a 
  half 
  after 
  the 
  egg 
  is 
  laid 
  in 
  water 
  the 
  young 
  

   worm 
  begins 
  to 
  extricate 
  itself, 
  which 
  it 
  took 
  one 
  of 
  them 
  an 
  hour 
  and 
  

   twelve 
  minutes 
  to 
  accomplish. 
  

  

  INJURTNa 
  STOKED 
  GRAIN. 
  

  

  t 
  

  

  The 
  Angoumois 
  Grain-Moth, 
  GelecMa 
  cerealella 
  Linn. 
  (Plate 
  LXV, 
  Figs. 
  7, 
  8.) 
  

   Devouring 
  the 
  interior 
  of 
  the 
  stored 
  grains 
  of 
  wlieat 
  and 
  corn, 
  and 
  transforming, 
  

   ■within 
  the 
  grain, 
  a 
  soft, 
  thick, 
  fleshy 
  caterpillar. 
  

  

  This 
  destructive 
  moth 
  is 
  found 
  in 
  granaries 
  in 
  this 
  country, 
  having 
  

   been 
  introduced 
  from 
  Europe, 
  where 
  it 
  has 
  been 
  extremely 
  destructive, 
  

   especially 
  in 
  the 
  French 
  province 
  of 
  Angoumois, 
  from 
  which 
  it 
  has 
  de- 
  

   rived 
  its 
  common 
  name. 
  The 
  first 
  account 
  of 
  its 
  occurrence 
  in 
  this 
  

   country 
  was 
  published 
  in 
  1708. 
  It 
  was 
  then 
  destructive 
  to 
  stored 
  grain 
  

   in 
  Virginia, 
  but 
  was 
  said 
  to 
  injure 
  wheat 
  forty 
  years 
  previous 
  in 
  North 
  

   Carolina. 
  Harris 
  also 
  adds 
  that 
  the 
  French 
  naturalist, 
  Bosc, 
  in 
  1796, 
  or 
  

   soon 
  after, 
  found 
  this 
  moth 
  " 
  so 
  abundant 
  in 
  Carolina 
  as 
  to 
  extinguish 
  

   a 
  candle 
  when 
  he 
  entered 
  his 
  granary 
  in 
  the 
  night." 
  Harris 
  further 
  

   states 
  that 
  this 
  grain-moth 
  spread 
  from 
  North 
  Carolina 
  and 
  Virginia 
  

   into 
  Kentucky 
  and 
  Southern 
  Ohio 
  and 
  Indiana, 
  "and 
  probably 
  more 
  or 
  

   less 
  throughout 
  the 
  wheat 
  region 
  of 
  the 
  adjacent 
  States, 
  between 
  the 
  

  

  