﻿206 
  History 
  of 
  Durham. 
  

  

  it 
  becomes 
  rough 
  and 
  thick, 
  and 
  is 
  unfitted 
  for 
  any 
  but 
  the 
  

   most 
  inferior 
  purposes. 
  Excessive 
  tenacity 
  of 
  the 
  soil 
  or 
  

   defective 
  drainage 
  are 
  causes 
  of 
  the 
  disease. 
  

  

  ''Hollow-stalk" 
  and 
  "sore 
  shin" 
  rarely 
  occur, 
  except 
  

   when 
  the 
  plants 
  have 
  been 
  overflowed, 
  and 
  then 
  mostly 
  

   upon 
  old 
  lands. 
  Some 
  planters 
  attribute 
  " 
  hollow 
  stalk 
  " 
  to 
  

   an 
  insect 
  feeding 
  upon 
  the 
  pith 
  of 
  the 
  lower 
  stalk, 
  or 
  to 
  the 
  

   after 
  effects 
  of 
  an 
  attack 
  by 
  the 
  wire-worm 
  upon 
  the 
  young 
  

   plant; 
  others 
  think 
  it 
  the 
  effect 
  of 
  a 
  bruise 
  or 
  a 
  wound 
  

   upon 
  the 
  stem 
  of 
  the 
  young 
  plant. 
  The 
  two 
  names 
  above 
  

   given 
  are 
  descriptive 
  of 
  different 
  appearances 
  of 
  tlie 
  same 
  

   disease. 
  It 
  is 
  most 
  probably 
  produced 
  b}' 
  excessive 
  absorp- 
  

   tion 
  of 
  water 
  by 
  the 
  pith 
  of 
  the 
  stalk 
  while 
  partially 
  sub- 
  

   merged 
  and 
  subsequent 
  exposure 
  to 
  high 
  a 
  degree 
  of 
  temper- 
  

   ature. 
  It 
  is 
  not 
  reported 
  as 
  occurring 
  upon 
  such 
  lands 
  as 
  

   are 
  never 
  flooded 
  by 
  rain 
  water, 
  nor 
  has 
  it 
  been 
  observed 
  

   upon 
  soils 
  well 
  underdrained 
  or 
  overlying 
  a 
  porous 
  subsoil. 
  

   There 
  is 
  no 
  remedy 
  for 
  it, 
  and 
  unless 
  the 
  plants 
  are 
  cut 
  as 
  

   soon 
  as 
  it 
  appears 
  they 
  become 
  worthless. 
  The 
  affected 
  

   plant 
  presents 
  very 
  much 
  the 
  same 
  appearance 
  as 
  if 
  nearly 
  

   severed 
  from 
  the 
  stalk, 
  witliering 
  slowly 
  without 
  ripening, 
  

  

  " 
  Frog-eye," 
  or 
  " 
  white 
  speck," 
  sometime 
  occurs 
  in 
  tobacco 
  

   thoroughly 
  ripe. 
  This 
  disease, 
  if 
  it 
  is 
  such, 
  is 
  of 
  rare 
  oc- 
  

   currence, 
  and 
  is 
  little 
  understood. 
  In 
  Florida 
  white 
  specks 
  

   are 
  a 
  sure 
  indication 
  of 
  fine 
  texture 
  in 
  the 
  leaf, 
  and 
  this 
  

   " 
  frog-eye" 
  appearance 
  was 
  at 
  one 
  time 
  much 
  esteemed. 
  

   This 
  particular 
  marking 
  seems 
  to 
  result 
  from 
  conditions 
  of 
  

   soil 
  or 
  climate, 
  or 
  from 
  both, 
  and 
  some 
  varieties 
  are 
  more 
  

   frequently 
  affected 
  than 
  others. 
  

  

  "White 
  veins 
  "occur 
  in 
  the 
  cured 
  product. 
  By 
  some 
  

   they 
  are 
  believed 
  to 
  be 
  caused 
  by 
  long-continued 
  dry 
  weather 
  

   before 
  and 
  after 
  cutting; 
  by 
  others 
  they 
  are 
  ascribed 
  to 
  any 
  

   check 
  in 
  the 
  growth 
  of 
  the 
  plant, 
  whether 
  for 
  lack 
  of 
  

   manures, 
  from 
  deficient 
  cultivation, 
  drought, 
  bad 
  seed, 
  or 
  

   too 
  much 
  water. 
  Some 
  think 
  they 
  are 
  caused 
  by 
  the 
  ab- 
  

   sence 
  of 
  some 
  soil 
  constituent. 
  All 
  that 
  can 
  be 
  said 
  is 
  th'at 
  

   they 
  do 
  occur, 
  very 
  much 
  to 
  the 
  injury 
  of 
  the 
  leaf 
  for 
  

   wrapping 
  purposes. 
  As 
  a 
  general 
  rule 
  the 
  product 
  from 
  a 
  

   field 
  well 
  prepared, 
  well 
  fertilized, 
  and 
  well 
  cultivated, 
  

   planted 
  in 
  good 
  season, 
  properly 
  topped 
  and 
  kept 
  free 
  of 
  

   suckers, 
  will 
  show 
  when 
  cured 
  very 
  few 
  white 
  veins. 
  

  

  " 
  Leprosy" 
  is 
  a 
  name 
  given 
  to 
  a 
  fungoid 
  mold 
  which 
  is 
  

   occasionally 
  found 
  -upon 
  cured 
  tobacco 
  hanging 
  in 
  the 
  barn 
  

  

  