﻿26 
  

  

  Mr. 
  Meyer's 
  report 
  upon 
  this 
  disease, 
  as 
  he 
  found 
  it 
  in 
  China, 
  

   has 
  some 
  points 
  which 
  may 
  be 
  of 
  interest 
  to 
  you. 
  He 
  said 
  the 
  dis- 
  

   ease 
  apparently 
  had 
  been 
  there 
  for 
  many 
  years, 
  as 
  the 
  lesions 
  of 
  the 
  

   disease 
  showed 
  if 
  they 
  were 
  examined 
  carefully. 
  The 
  fact 
  that 
  it 
  

   has 
  been 
  there 
  for 
  many 
  years 
  is, 
  I 
  think, 
  questioned 
  by 
  no 
  one 
  at 
  

   the 
  present 
  time. 
  Its 
  growth 
  in 
  China 
  seems 
  to 
  be 
  somewhat 
  dif- 
  

   ferent, 
  in 
  fact 
  in 
  many 
  cases 
  quite 
  different, 
  from 
  the 
  growth 
  on 
  the 
  

   American 
  and 
  the 
  European 
  chestnut 
  trees. 
  It 
  is 
  rather 
  of 
  the 
  type 
  

   that 
  we 
  are 
  familiar 
  with 
  on 
  the 
  resistant 
  Japanese 
  trees. 
  More- 
  

   over, 
  it 
  appears 
  on 
  some 
  of 
  the 
  trees 
  as 
  shown 
  in 
  the 
  photographs 
  

   which 
  I 
  will 
  pass 
  around. 
  The 
  appearance 
  of 
  the 
  disease 
  more 
  

   closely 
  resembles, 
  in 
  some 
  ways, 
  what 
  we 
  are 
  familiar 
  with 
  in 
  the 
  

   European 
  apple 
  canker 
  as 
  it 
  appears 
  on 
  the 
  apple 
  trees. 
  I 
  think 
  

   those 
  who 
  are 
  familiar 
  with 
  the 
  apple 
  canker 
  will 
  notice 
  the 
  resem- 
  

   blance, 
  in 
  at 
  least 
  one 
  or 
  two 
  of 
  these 
  photographs. 
  Now, 
  I 
  don't 
  

   mean 
  by 
  that 
  that 
  it 
  is 
  the 
  same 
  as 
  the 
  apple 
  canker, 
  but 
  I 
  do 
  want 
  

   to 
  call 
  your 
  attention 
  to 
  its 
  appearance 
  in 
  these 
  photographs, 
  and 
  

   at 
  the 
  same 
  time, 
  to 
  tell 
  you 
  something 
  that 
  Mr. 
  Meyer 
  wrote 
  about 
  

   this 
  disease 
  as 
  it 
  appeared 
  in 
  China. 
  He 
  said 
  he 
  found 
  no 
  trees 
  

   that 
  were 
  absolutely 
  killed 
  by 
  the 
  disease. 
  This 
  may 
  mean, 
  and 
  

   probably 
  does, 
  that 
  the 
  Chinese 
  tree 
  is 
  resistant, 
  to 
  a 
  certain 
  extent, 
  

   to 
  this 
  disease 
  ; 
  that 
  is, 
  it 
  shows 
  a 
  certain 
  amount 
  of 
  resistance, 
  much 
  

   in 
  the 
  same 
  way 
  that 
  the 
  Japanese 
  chestnut 
  tree 
  does 
  to 
  the 
  disease 
  

   in 
  this 
  country. 
  

  

  For 
  some 
  years 
  (as 
  some 
  of 
  you 
  will 
  remember, 
  I 
  think) 
  there 
  

   have 
  been 
  two 
  different 
  views 
  as 
  to 
  the 
  origin 
  of 
  this 
  disease. 
  One 
  

   is 
  that 
  it 
  is 
  a 
  native 
  fungus 
  which, 
  for 
  some 
  reason, 
  has 
  assumed 
  a 
  

   parasitic 
  form 
  ; 
  the 
  other 
  that 
  it 
  is 
  an 
  imported 
  disease. 
  The 
  prin- 
  

   cipal 
  reasons 
  for 
  the 
  latter 
  view 
  are 
  that 
  it 
  spreads 
  in 
  this 
  country 
  

   on 
  the 
  American 
  chestnut 
  in 
  much 
  the 
  same 
  manner 
  that 
  other 
  

   imported 
  diseases 
  have 
  spread 
  on 
  other 
  plants. 
  The 
  fact 
  is 
  that 
  

   this 
  disease 
  (so 
  far 
  as 
  we 
  can 
  find 
  absolutely 
  identical 
  with 
  the 
  

   American 
  form) 
  has 
  been 
  found 
  in 
  China; 
  about 
  this 
  point 
  there 
  

   is 
  no 
  doubt 
  at 
  all, 
  and 
  I 
  think 
  we 
  can 
  safely 
  say, 
  although 
  we 
  cannot 
  

   absolutely 
  prove 
  it 
  at 
  this 
  time, 
  that 
  the 
  disease 
  in 
  this 
  country 
  was 
  

   imported 
  from 
  the 
  Orient. 
  What 
  bearing 
  this 
  will 
  have 
  on 
  the 
  

   question 
  of 
  control 
  of 
  the 
  disease 
  in 
  this 
  country 
  remains 
  to 
  be 
  seen. 
  

  

  Have 
  we 
  any 
  chestnuts 
  which 
  show 
  immunity 
  to 
  this 
  disease? 
  

   The 
  American 
  chestnut 
  is 
  subject 
  to 
  it 
  in 
  its 
  most 
  virulent 
  form. 
  

   There 
  are 
  of 
  course 
  a 
  number 
  of 
  varieties 
  of 
  the 
  American 
  chestnut 
  

   which 
  have 
  been 
  cultivated. 
  Of 
  these 
  the 
  two 
  which 
  I 
  have 
  seen 
  

   most 
  of 
  are 
  the 
  Hathaway 
  and 
  the 
  Spineless. 
  Both 
  of 
  these 
  are 
  

  

  